def find_initial_worm(small_image, well_mask):
# plan here is to find known good worm edges with Canny using a stringent threshold, then
# relax the threshold in the vicinity of the good edges.
# back off another pixel from the well edge to avoid gradient from the edge
shrunk_mask = ndimage.binary_erosion(well_mask, structure=S)
smoothed, gradient, sobel = canny.prepare_canny(small_image, 2, shrunk_mask)
local_maxima = canny.canny_local_maxima(gradient, sobel)
# Calculate stringent and medium-stringent thresholds. The stringent threshold
# is the 200th-brightest edge pixel, and the medium is the 450th-brightest pixel
highp = 100 * (1-200/local_maxima.sum())
highp = max(highp, 94)
mediump = 100 * (1-450/local_maxima.sum())
mediump = max(mediump, 94)
low_worm, medium_worm, high_worm = numpy.percentile(gradient[local_maxima], [94, mediump, highp])
stringent_worm = canny.canny_hysteresis(local_maxima, gradient, low_worm, high_worm)
# Expand out 20 pixels from the stringent worm edges to make our search space
stringent_area = ndimage.binary_dilation(stringent_worm, mask=well_mask, iterations=20)
# now use the relaxed threshold but only in the stringent area
relaxed_worm = canny.canny_hysteresis(local_maxima, gradient, low_worm, medium_worm) & stringent_area
# join very close-by objects, and remove remaining small objects
candidate_worm = ndimage.binary_dilation(relaxed_worm, structure=S)
candidate_worm = ndimage.binary_erosion(candidate_worm)
candidate_worm = mask.remove_small_area_objects(candidate_worm, 30, structure=S)
# Now figure out the biggest blob of nearby edges, and call that the worm region
glommed_candidate = ndimage.binary_dilation(candidate_worm, structure=S, iterations=2)
glommed_candidate = ndimage.binary_erosion(glommed_candidate, iterations=2)
# get just outline, not any regions filled-in due to closing
glommed_candidate ^= ndimage.binary_erosion(glommed_candidate)
glommed_candidate = mask.get_largest_object(glommed_candidate, structure=S)
worm_area = ndimage.binary_dilation(glommed_candidate, mask=well_mask, structure=S, iterations=12)
worm_area = mask.fill_small_radius_holes(worm_area, max_radius=15)
candidate_edges = relaxed_worm & candidate_worm & worm_area
return candidate_edges, worm_area
def cell_to_image(self): # Find x, y coordinate bounds x_res = max(self.pix_list, key=itemgetter(0))[0] y_res = max(self.pix_list, key=itemgetter(1))[1] # Creating labeled_img self.cell_img = NP.zeros([x_res+2, y_res+2], dtype=NP.int_) for (x_pix, y_pix) in self.pix_list: self.cell_img[x_pix-1, y_pix-1] = 1 # Find the pixels that make up the perimeter eroded_image = NDI.binary_erosion(self.cell_img) eroded_image_open = NDI.binary_opening(eroded_image, structure=NP.ones((3,3))) eroded_image_open2 = NDI.binary_erosion(eroded_image_open) # self.perim_img = self.cell_img - eroded_image self.eroded_img = eroded_image_open - eroded_image_open2 self.perim_img = self.cell_img - eroded_image # Create a list of the coordinates of the pixels (use the center of the pixels) perim_image_ind = NP.where(self.perim_img == 1) perim_image_coord = NP.array([perim_image_ind[0], perim_image_ind[1]]) self.perim_coord = NP.transpose(perim_image_coord) return
def prepare_roi_from_probtissue(in_file, epi_mask, epi_mask_erosion_mm=0,
erosion_mm=0):
import os
import nibabel as nb
import scipy.ndimage as nd
probability_map_nii = nb.load(in_file)
probability_map_data = probability_map_nii.get_data()
# thresholding
probability_map_data[probability_map_data < 0.95] = 0
probability_map_data[probability_map_data != 0] = 1
epi_mask_nii = nb.load(epi_mask)
epi_mask_data = epi_mask_nii.get_data()
if epi_mask_erosion_mm:
epi_mask_data = nd.binary_erosion(epi_mask_data,
iterations=int(epi_mask_erosion_mm/max(probability_map_nii.header.get_zooms()))).astype(int)
eroded_mask_file = os.path.abspath("erodd_mask.nii.gz")
nb.Nifti1Image(epi_mask_data, epi_mask_nii.affine, epi_mask_nii.header).to_filename(eroded_mask_file)
else:
eroded_mask_file = epi_mask
probability_map_data[epi_mask_data != 1] = 0
# shrinking
if erosion_mm:
iter_n = int(erosion_mm/max(probability_map_nii.header.get_zooms()))
probability_map_data = nd.binary_erosion(probability_map_data,
iterations=iter_n).astype(int)
new_nii = nb.Nifti1Image(probability_map_data, probability_map_nii.affine,
probability_map_nii.header)
new_nii.to_filename("roi.nii.gz")
return os.path.abspath("roi.nii.gz"), eroded_mask_file
def binary_erosion(image, selem=None, out=None):
"""Return fast binary morphological erosion of an image.
This function returns the same result as greyscale erosion but performs
faster for binary images.
Morphological erosion sets a pixel at ``(i,j)`` to the minimum over all
pixels in the neighborhood centered at ``(i,j)``. Erosion shrinks bright
regions and enlarges dark regions.
Parameters
----------
image : ndarray
Binary input image.
selem : ndarray, optional
The neighborhood expressed as a 2-D array of 1's and 0's.
If None, use cross-shaped structuring element (connectivity=1).
out : ndarray of bool, optional
The array to store the result of the morphology. If None is
passed, a new array will be allocated.
Returns
-------
eroded : ndarray of bool or uint
The result of the morphological erosion taking values in
``[False, True]``.
"""
if out is None:
out = np.empty(image.shape, dtype=np.bool)
ndi.binary_erosion(image, structure=selem, output=out, border_value=True)
return out
def get_base_positions_bimanual(rars, joints):
PR2.SetDOFValues(joints)
f = np.load("/home/joschu/bulletsim/data/knots/l_reachability.npz")
xtorso, ytorso, ztorso = xyz_torso = PR2.GetLink("torso_lift_link").GetTransform()[:3,3] - PR2.GetLink("base_footprint").GetTransform()[:3,3]
xyz_l = rars["xyz_l"]
xyz_r = rars["xyz_r"]
left_used = (rars["grab_l"] > -1).any()
right_used = (rars["grab_r"] > -1).any()
print "left_used: %i, right_used: %i"%(left_used, right_used)
invreachL = f["reachable"][::-1, ::-1, :] #places that can reach the origin
invreachR = f["reachable"][::-1, :, :] #places that can reach the origin
invreachL = ndi.binary_erosion(invreachL,np.ones((3,3,3)))
invreachR = ndi.binary_erosion(invreachR,np.ones((3,3,3)))
xticksir = - f["xticks"][::-1]
yticksirL = - f["yticks"][::-1]
yticksirR = f["yticks"]
zticksir = f["zticks"]
leftbounds = [xminL, xmaxL, yminL, ymaxL] = get_xy_bounds(xyz_l, xticksir, yticksirL) # bounds for torso position array
rightbounds = [xminR, xmaxR, yminR, ymaxR] = get_xy_bounds(xyz_r, xticksir, yticksirR)
[xmin, xmax, ymin, ymax] = [min(xminL, xminR), max(xmaxL, xmaxR), min(yminL, yminR), max(ymaxL, ymaxR)]
if WITH_VIEWER:
HANDLES.append(ENV.drawlinestrip(points=np.array([[xmin, ymin, 0],
[xmin, ymax, 0],
[xmax, ymax, 0],
[xmax, ymin, 0]]),
linewidth=1.0))
xticks = np.arange(xmin-DL, xmax+DL, DL) # torso positions
yticks = np.arange(ymin-DL, ymax+DL, DL)
collision_cost = 1e9
left_fail_cost = 1000000. if left_used else 100
right_fail_cost = 1000000. if right_used else 100
dist_cost = 1.
base_costs = np.zeros((len(rars), xticks.size, yticks.size))
coll_mask = get_collision_mask(xticks, yticks)
base_costs += collision_cost * coll_mask[None,:,:]
for (i, (xl, yl, zl), (xr, yr, zr)) in zip(xrange(len(rars)), xyz_l, xyz_r):
zlind = intround( (zl - ztorso - zticksir[0]) / DL )
zrind = intround( (zr - ztorso - zticksir[0]) / DL )
base_costs[i] += (shift_and_place_image(invreachL[:,:,zlind], xl, yl, xticksir, yticksirL, xticks, yticks) <= 0) * left_fail_cost + dist_cost
base_costs[i] += (shift_and_place_image(invreachR[:,:,zrind], xr, yr, xticksir, yticksirR, xticks, yticks) <= 0) * right_fail_cost + dist_cost
xinds_base, yinds_base = get_feasible_path(base_costs).T
return np.c_[xticks[xinds_base] - xtorso, yticks[yinds_base] - ytorso]
def erosion():
image_list = get_one_imagefrom_mnist()
image_array =np.asarray(image_list)
image =image_array.reshape(28, 28)
ndimage.binary_erosion(image).astype(int)
plt.imshow(image, cmap=cm.binary)
plt.show()
def edge_detect_first(i):
import numpy as np
from scipy import ndimage
ero = ndimage.binary_erosion(i, iterations=2).astype(i.dtype)
dil = ndimage.binary_dilation(i, iterations=1).astype(i.dtype)
sep = dil-ero
sep = ndimage.binary_erosion(sep, iterations=1).astype(sep.dtype)
sep[sep==0]=np.nan
return sep
def analyseClusters(binary, newlabels):
"""
Calculates the sizes and porosities of the clusters.
"""
# dilate particles to find cluster
dilated = ndimage.binary_dilation(binary, iterations=_DILATIONFACTOR_TO_FIND_CLUSTER)
labels, num = label(dilated, background=0, return_num=True)
pxArea = (_CONVERSIONFACTOR_FOR_PIXEL) ** 2
outputImage = labels.copy()
clusterAreas = np.zeros(num)
porosities = np.zeros(num)
circumference = np.zeros(num)
fcirc = np.zeros(num)
particlesPerCluster = np.zeros(num)
illegalIndex = []
for i in range(num):
cluster = labels == i
cluster = ndimage.binary_fill_holes(cluster)
helper = np.zeros_like(newlabels)
helper[cluster] = newlabels[cluster]
newLabel, particleNum = label(helper, background=0, return_num=True)
particlesPerCluster[i] = particleNum
particleArea = float(np.sum(binary[cluster].astype(np.int)))
# cluster area and porosity
outputImage[cluster] = i
helper = ndimage.binary_erosion(cluster, iterations=_DILATIONFACTOR_TO_FIND_CLUSTER-3, border_value=1)
helper = ndimage.binary_erosion(helper, iterations=3, border_value=0)
fl = float(np.sum(helper[cluster].astype(np.int)))
clusterAreas[i] = fl * pxArea
porosity = (fl - particleArea)/ fl
porosity = porosity if porosity >= 0 else 0.0 # porosity can not be less than 0
porosities[i] = porosity
# circumference
new = np.zeros((helper.shape[0],helper.shape[1],3), dtype=np.uint8)
new[:,:,1] = helper
gray = cv2.cvtColor(new, cv2.COLOR_RGB2GRAY)
gray[gray > 0] = 255
blur = cv2.GaussianBlur(gray,(5,5),0)
gray = cv2.Canny(blur, 10, 200)
contours, hierarchy = cv2.findContours(gray, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
arclength = 0
for con in contours:
arclength += cv2.arcLength(con,True)
circumference[i] = arclength * _CONVERSIONFACTOR_FOR_PIXEL
fcirc[i] = (4. * np.pi * fl) / arclength**2
if fcirc[i] > 1.0: # fcirc can not be greater than 1
illegalIndex.append(i)
fcirc = np.delete(fcirc, illegalIndex)
clusterData = {'areas':clusterAreas,'circ':circumference,'ppc':particlesPerCluster,'fcirc':fcirc,'porosities':porosities}
return outputImage, clusterData, num
def test_binary_closing_noninteger_brute_force_passes_when_true():
# regression test for gh-9905, gh-9909: ValueError for
# non integer iterations
data = numpy.ones([1])
assert sndi.binary_erosion(
data, iterations=2, brute_force=1.5
) == sndi.binary_erosion(data, iterations=2, brute_force=bool(1.5))
assert sndi.binary_erosion(
data, iterations=2, brute_force=0.0
) == sndi.binary_erosion(data, iterations=2, brute_force=bool(0.0))
def erode(volume, iterations, out=None):
if out is None:
out = zeros_like(volume)
if SCIPY:
binary_erosion(volume.array, iterations=iterations, output=out.array)
else:
tmp = volume.array.copy()
for i in range(iterations):
binary_erosion(tmp, out.array)
tmp[:] = out.array[:]
return out
def _tpm2roi(in_tpm, in_mask, mask_erosion_mm=None, erosion_mm=None,
mask_erosion_prop=None, erosion_prop=None, pthres=0.95,
newpath=None):
"""
Generate a mask from a tissue probability map
"""
tpm_img = nb.load(in_tpm)
roi_mask = (tpm_img.get_data() >= pthres).astype(np.uint8)
eroded_mask_file = None
erode_in = (mask_erosion_mm is not None and mask_erosion_mm > 0 or
mask_erosion_prop is not None and mask_erosion_prop < 1)
if erode_in:
eroded_mask_file = fname_presuffix(in_mask, suffix='_eroded',
newpath=newpath)
mask_img = nb.load(in_mask)
mask_data = mask_img.get_data().astype(np.uint8)
if mask_erosion_mm:
iter_n = max(int(mask_erosion_mm / max(mask_img.header.get_zooms())), 1)
mask_data = nd.binary_erosion(mask_data, iterations=iter_n)
else:
orig_vol = np.sum(mask_data > 0)
while np.sum(mask_data > 0) / orig_vol > mask_erosion_prop:
mask_data = nd.binary_erosion(mask_data, iterations=1)
# Store mask
eroded = nb.Nifti1Image(mask_data, mask_img.affine, mask_img.header)
eroded.set_data_dtype(np.uint8)
eroded.to_filename(eroded_mask_file)
# Mask TPM data (no effect if not eroded)
roi_mask[~mask_data] = 0
# shrinking
erode_out = (erosion_mm is not None and erosion_mm > 0 or
erosion_prop is not None and erosion_prop < 1)
if erode_out:
if erosion_mm:
iter_n = max(int(erosion_mm / max(tpm_img.header.get_zooms())), 1)
iter_n = int(erosion_mm / max(tpm_img.header.get_zooms()))
roi_mask = nd.binary_erosion(roi_mask, iterations=iter_n)
else:
orig_vol = np.sum(roi_mask > 0)
while np.sum(roi_mask > 0) / orig_vol > erosion_prop:
roi_mask = nd.binary_erosion(roi_mask, iterations=1)
# Create image to resample
roi_fname = fname_presuffix(in_tpm, suffix='_roi', newpath=newpath)
roi_img = nb.Nifti1Image(roi_mask, tpm_img.affine, tpm_img.header)
roi_img.set_data_dtype(np.uint8)
roi_img.to_filename(roi_fname)
return roi_fname, eroded_mask_file or in_mask
def get_uv_mask(vertices_vis, triangles, uv_coords, h, w, resolution):
triangles = triangles.T
vertices_vis = vertices_vis.astype(np.float32)
uv_mask = render_texture(uv_coords.T, vertices_vis[np.newaxis, :], triangles, resolution, resolution, 1)
uv_mask = np.squeeze(uv_mask > 0)
uv_mask = ndimage.binary_closing(uv_mask)
uv_mask = ndimage.binary_erosion(uv_mask, structure = np.ones((4,4)))
uv_mask = ndimage.binary_closing(uv_mask)
uv_mask = ndimage.binary_erosion(uv_mask, structure = np.ones((4,4)))
uv_mask = ndimage.binary_erosion(uv_mask, structure = np.ones((4,4)))
uv_mask = ndimage.binary_erosion(uv_mask, structure = np.ones((4,4)))
uv_mask = uv_mask.astype(np.float32)
return np.squeeze(uv_mask)
def process_blob(cim):
#cim = ndimage.binary_erosion(cim>0)
for i in range(4):
cim = ndimage.binary_erosion(cim>0)
cim=ndimage.binary_dilation(cim>0)
filterk = np.ones(Param.process_conv_size);
cim = ndimage.convolve(cim, filterk, mode='constant', cval=0.0)
for i in range(Param.num_dilation):
cim = ndimage.binary_dilation(cim>0)
for i in range(Param.num_erosion):
cim = ndimage.binary_erosion(cim>0)
return cim
def _post_process_mask(mask, affine, opening=2, connected=True,
warning_msg=""):
if opening:
opening = int(opening)
mask = ndimage.binary_erosion(mask, iterations=opening)
mask_any = mask.any()
if not mask_any:
warnings.warn("Computed an empty mask. %s" % warning_msg,
MaskWarning, stacklevel=2)
if connected and mask_any:
mask = largest_connected_component(mask)
if opening:
mask = ndimage.binary_dilation(mask, iterations=2 * opening)
mask = ndimage.binary_erosion(mask, iterations=opening)
return mask, affine
def _post_process_mask(mask, affine, opening=2, connected=True, msg=""):
if opening:
opening = int(opening)
mask = ndimage.binary_erosion(mask, iterations=opening)
mask_any = mask.any()
if not mask_any:
warnings.warn("Computed an empty mask. %s" % msg,
MaskWarning, stacklevel=2)
if connected and mask_any:
mask = largest_connected_component(mask)
if opening:
mask = ndimage.binary_dilation(mask, iterations=2*opening)
mask = ndimage.binary_erosion(mask, iterations=opening)
return Nifti1Image(_utils.as_ndarray(mask, dtype=np.int8),
affine)
def calculate_distance_to_edge(self, workspace):
m = workspace.measurements
edge = workspace.image_set.get_image(self.edge_image.value,
must_be_binary=True)
edge = edge.pixel_data
objects = workspace.object_set.get_objects(self.object_name.value)
distance = np.ones(objects.count) * np.sqrt(np.prod(edge.shape)) / 2
for e in (edge, ~edge):
d = distance_transform_edt(e)
for labels, indices in objects.get_labels():
#
# A mask of labeled points outside of the edge object
#
mask = (labels != 0) & (d != 0)
dm = d[mask]
lm = labels[mask]
#
# Order by distance, then label, take the first of
# each label to find the minimum
#
order = np.lexsort((dm, lm))
lm, dm = lm[order], dm[order]
smallest = np.hstack([[True], lm[:-1] != lm[1:]])
distance[lm[smallest]-1] = \
np.minimum(dm[smallest], distance[lm[smallest]-1])
m.add_measurement(self.object_name.value,
self.edge_feature(),
distance)
if workspace.frame is not None:
dpicture = workspace.display_data.distances = -np.ones(edge.shape)
for labels, indices in objects.get_labels():
dpicture[labels!=0] = distance[labels[labels!=0] - 1]
workspace.display_data.edge = (
binary_dilation(edge, structure=np.ones((3,3), bool)) !=
binary_erosion(edge, structure=np.ones((3,3), bool), border_value=1))
def get_base_positions2(xyzs_world):
xtorso, ytorso, ztorso = xyz_torso = PR2.GetLink("torso_lift_link").GetTransform()[:3,3] - PR2.GetLink("base_footprint").GetTransform()[:3,3]
f = np.load("/home/joschu/bulletsim/data/knots/l_reachability.npz")
invreach = f["reachable"][::-1, ::-1, :] #places that can reach the origin
invreach = ndi.binary_erosion(invreach,np.ones((3,3)))
xticksir = - f["xticks"][::-1]
yticksir = - f["yticks"][::-1]
zticksir = f["zticks"]
[xmin, xmax, ymin, ymax] = get_xy_bounds(xyzs_world, xticksir, yticksir) # bounds for torso position array
xticks = np.arange(xmin-DL, xmax+DL, DL) # torso positions
yticks = np.arange(ymin-DL, ymax+DL, DL)
base_costs = np.zeros((len(xyzs_world), xticks.size, yticks.size))
for (i,(x, y, z)) in enumerate(xyzs_world):
zind = intround( (z - ztorso) / DL )
base_costs[i] = shift_and_place_image(1 + (invreach[:,:,zind]<=0)*1000, x, y, xticksir, yticksir, xticks, yticks)
xinds_base, yinds_base = get_feasible_path(base_costs).T
return np.c_[xticks[xinds_base] - xtorso, yticks[yinds_base] - ytorso]
def filterImage(image):
"""
Filters the given image and returns a binary representation of it.
"""
# otsu to bring out edges
t_loc_otsu = otsu(image[:, :, 1])
loc_otsu = np.zeros_like(image, dtype=np.bool)
loc_otsu[:, :, 1] = image[:, :, 1] <= t_loc_otsu + 5
image[loc_otsu] = 0
# bring out single particles and smooth the rest
foot = circarea(8)
green = rank_filter(image[:,:,1], foot, rank=44)
nonzero = green > 10
weak = (green > 20) & (green < green[nonzero].mean())
green[weak] += 40
# remove pollution
gray = cv2.medianBlur(green, ksize=13)
# black and white representation of particles and surroundings
binary = gray < 25
# dilatation and erosion
dilated1 = ndimage.binary_dilation(binary, iterations=6)
erosed = ndimage.binary_erosion(dilated1, iterations=_EROSIONFACTOR+3)
dilated = ndimage.binary_dilation(erosed, iterations=_EROSIONFACTOR)
return dilated
def segmentationize(imageSe):
"""
Divides coherent forms of an image in smaller groups of type integer.
"""
# create an matrix of distances to the next sourrounding area
distance = ndimage.distance_transform_edt(imageSe, sampling=3)
erosed = ndimage.binary_erosion(imageSe, iterations=8).astype(imageSe.dtype)
distanceE = ndimage.distance_transform_edt(erosed, sampling=3)
distance += (2 * distanceE)
labels, num = label(imageSe, background=0, return_num='True')
sizes_image = ndimage.sum(imageSe, labels, range(num))
sizes_image = np.sort(sizes_image, axis=None)
pos = int(0.4 * num)
areal = int(sizes_image[pos] ** 0.5)
if areal <= 10:
areal = 10
elif (areal % 2) != 0:
areal += 1
footer = circarea(areal) # draw circle area
# find the positions of the maxima from the distances
local_maxi = peak_local_max(distance, indices=False, footprint=footer, labels=imageSe)
markers = label(local_maxi)
# watershed algorithm starts at the maxima and returns labels of particles
simplefilter("ignore", FutureWarning) # avoid warning in watershed method
labels_ws = watershed(-distance, markers, mask=imageSe)
simplefilter("default", FutureWarning)
return labels, labels_ws, local_maxi
def erode(self, n_pixels=1):
r"""
Returns a copy of this :map:`MaskedImage` in which the mask has been
shrunk by n pixels along its boundary.
Parameters
----------
n_pixels : int, optional
The number of pixels by which we want to shrink the mask along
its own boundary.
Returns
-------
: :map:`MaskedImage`
The copy of the masked image in which the mask has been shrunk
by n pixels along its boundary.
"""
global binary_erosion
if binary_erosion is None:
from scipy.ndimage import binary_erosion # expensive
# Erode the edge of the mask in by one pixel
eroded_mask = binary_erosion(self.mask.mask, iterations=n_pixels)
image = self.copy()
image.mask = BooleanImage(eroded_mask)
return image
def clean_classified_image(self):
"""
clean the binary image resulting from pixel classification using morphological operators
"""
if self.class_image is None:
self.classify_image()
bim = self.class_image
feature_mask = self.features_object.mask_image
if feature_mask is not None:
bim = bim & feature_mask
bim = ni.binary_fill_holes(bim)
min_gap = 0
for n in range(min_gap):
bim = ni.binary_dilation(bim)
#bim = ni.binary_closing(bim)
#bim = ni.binary_fill_holes(bim)
min_radius = 8
for n in range(min_radius):
bim = ni.binary_erosion(bim)
#bim = ni.binary_opening(bim)
for n in range(min_radius):
bim = ni.binary_dilation(bim)
#bim = ni.binary_dilation(bim)
#bim = ni.binary_erosion(bim)
self.clean_class_image = bim.astype(np.uint8) * 255
def character_seg_erosion(grey_scale_image, max_w_h_ratio=0.85):
bin_img = grey_scale_image > 0
labels, num_labels = label(binary_erosion(bin_img > 0))
for span, mask in _create_spans_and_masks(labels, num_labels):
char_img = grey_scale_image[:, span[0]:span[1]].copy()
char_img[mask == False] = 0
yield char_img
def _run_interface(self, runtime):
in_file = nb.load(self.inputs.in_file)
wm_mask = nb.load(self.inputs.wm_mask).get_data()
wm_mask[wm_mask < 0.9] = 0
wm_mask[wm_mask > 0] = 1
wm_mask = wm_mask.astype(np.uint8)
if self.inputs.erodemsk:
# Create a structural element to be used in an opening operation.
struc = nd.generate_binary_structure(3, 2)
# Perform an opening operation on the background data.
wm_mask = nd.binary_erosion(wm_mask, structure=struc).astype(np.uint8)
data = in_file.get_data()
data *= 1000.0 / np.median(data[wm_mask > 0])
out_file = fname_presuffix(self.inputs.in_file,
suffix='_harmonized', newpath='.')
in_file.__class__(data, in_file.affine, in_file.header).to_filename(
out_file)
self._results['out_file'] = out_file
return runtime
def erode(ndvar, dim):
ax = ndvar.get_axis(dim)
struct = np.zeros((3,) * ndvar.ndim, bool)
index = tuple(slice(None) if i == ax else 1 for i in range(ndvar.ndim))
struct[index] = True
x = ndimage.binary_erosion(ndvar.x, struct)
return NDVar(x, ndvar.dims, ndvar.info.copy(), ndvar.name)
def set_boundary_pixels(self, value=0.0, n_pixels=1):
r"""
Returns a copy of this :map:`MaskedImage` for which n pixels along
the its mask boundary have been set to a particular value. This is
useful in situations where there is absent data in the image which
can cause, for example, erroneous computations of gradient or features.
Parameters
----------
value : float or (n_channels, 1) ndarray
n_pixels : int, optional
The number of pixels along the mask boundary that will be set to 0.
Returns
-------
: :map:`MaskedImage`
The copy of the image for which the n pixels along its mask
boundary have been set to a particular value.
"""
global binary_erosion
if binary_erosion is None:
from scipy.ndimage import binary_erosion # expensive
# Erode the edge of the mask in by one pixel
eroded_mask = binary_erosion(self.mask.mask, iterations=n_pixels)
# replace the eroded mask with the diff between the two
# masks. This is only true in the region we want to nullify.
np.logical_and(~eroded_mask, self.mask.mask, out=eroded_mask)
# set all the boundary pixels to a particular value
self.pixels[..., eroded_mask] = value
def step(self):
"""Perform a single step of the morphological snake evolution."""
# Assign attributes to local variables for convenience.
u = self._u
gI = self._data
dgI = self._ddata
theta = self._theta
v = self._v
if u is None:
raise ValueError, "the levelset is not set (use set_levelset)"
res = np.copy(u)
# Balloon.
if v > 0:
aux = binary_dilation(u, self.structure)
elif v < 0:
aux = binary_erosion(u, self.structure)
if v!= 0:
res[self._threshold_mask_v] = aux[self._threshold_mask_v]
# Image attachment.
aux = np.zeros_like(res)
dres = np.gradient(res)
for el1, el2 in zip(dgI, dres):
aux += el1*el2
res[aux > 0] = 1
res[aux < 0] = 0
# Smoothing.
for i in xrange(self.smoothing):
res = curvop(res)
self._u = res
def __init__(self, XYZ, sigma, n=1):
self.XYZ = XYZ
self.sigma = sigma
if np.isscalar(sigma):
self.sigma = sigma * (XYZ.max(axis=1) > 1)
self.n = n
self.XYZ_vol = np.zeros(XYZ.max(axis=1) + 2, int) - 1
p = XYZ.shape[1]
self.XYZ_vol[list(XYZ)] = np.arange(p)
mask_vol = np.zeros(XYZ.max(axis=1) + 1, int)
mask_vol[list(XYZ)] += 1
mask_vol = binary_erosion(mask_vol.squeeze(), iterations=int(round(1.5*self.sigma.max())))
mask_vol = mask_vol.reshape(XYZ.max(axis=1) + 1).astype(int)
XYZ_mask = np.array(np.where(mask_vol > 0))
self.mask = self.XYZ_vol[XYZ_mask[0], XYZ_mask[1], XYZ_mask[2]]
q = len(self.mask)
dX, dY, dZ = XYZ.max(axis=1) + 1
self.U_vol = np.zeros((3, dX, dY, dZ), float)
self.U_vol[:, XYZ_mask[0], XYZ_mask[1], XYZ_mask[2]] += 1
self.U_vol = square_gaussian_filter(self.U_vol, [0, self.sigma[0], self.sigma[1], self.sigma[2]], mode='constant')
self.norm_coeff = 1 / np.sqrt(self.U_vol.max())
self.U = np.zeros((3, n, q), float)
self.V = np.zeros((3, n, p), float)
self.W = np.zeros((3, n, p), int)
self.I = np.arange(p).reshape(1, p) * np.ones((n, 1), int)
self.XYZ_min = self.XYZ.min(axis=1).reshape(3, 1) - 1
self.XYZ_max = self.XYZ.max(axis=1).reshape(3, 1) + 1
def measure_fluorescence(image, worm_mask, well_mask=None):
if well_mask is not None:
restricted_mask = ndimage.binary_erosion(well_mask, iterations=15)
background = polyfit.fit_polynomial(image[::4,::4], mask=restricted_mask[::4,::4], degree=2).astype(numpy.float32)
background = ndimage.zoom(background, 4)
background /= background[well_mask].mean()
background[background <= 0.01] = 1 # we're going to divide by background, so prevent div/0 errors
image = image.astype(numpy.float32) / background
image[~well_mask] = 0
worm_pixels = image[worm_mask]
low_px_mean, low_px_std = mcd.robust_mean_std(worm_pixels[worm_pixels < worm_pixels.mean()], 0.5)
expression_thresh = low_px_mean + 2.5*low_px_std
high_expression_thresh = low_px_mean + 6*low_px_std
fluo_px = worm_pixels[worm_pixels > expression_thresh]
high_fluo_px = worm_pixels[worm_pixels > high_expression_thresh]
area = worm_mask.sum()
integrated = worm_pixels.sum()
median, percentile95 = numpy.percentile(worm_pixels, [50, 95])
expression_area = fluo_px.size
expression_area_fraction = expression_area / area
expression_mean = fluo_px.mean()
high_expression_area = high_fluo_px.size
high_expression_area_fraction = high_expression_area / area
high_expression_mean = high_fluo_px.mean()
high_expression_integrated = high_fluo_px.sum()
expression_mask = (image > expression_thresh) & worm_mask
high_expression_mask = (image > high_expression_thresh) & worm_mask
return data_row(area, integrated, median, percentile95,
expression_area, expression_area_fraction, expression_mean,
high_expression_area, high_expression_area_fraction,
high_expression_mean, high_expression_integrated), (image, background, expression_mask, high_expression_mask)
def declutter_experimental(data, ratio):
"""
For regions with size less or equal than size, set to zero if ratio
of of egde sum to region sum exceeds ratio.
"""
# label
data_nonzero = data > 0
lbl, nlbl = ndimage.label(data_nonzero)
# data
data_size = ndimage.measurements.sum(data_nonzero, lbl, lbl)
data_sum = ndimage.measurements.sum(data, lbl, lbl)
# edge
edge = np.where(np.logical_and(ndimage.binary_erosion(data_nonzero), data_nonzero), 0, data)
edge_nonzero = edge > 0
edge_size = ndimage.measurements.sum(edge_nonzero, lbl, lbl)
edge_sum = ndimage.measurements.sum(edge, lbl, lbl)
# ratio
data_mean = data_sum[data_nonzero] / data_size[data_nonzero]
edge_mean = edge_sum[data_nonzero] / edge_size[data_nonzero]
data_ratio = np.zeros(data.shape, data.dtype)
data_ratio[data_nonzero] = edge_mean / data_mean
return np.where(data_ratio > ratio, 0, data)
def InDecPatch(self,which,amount):
s = ndimage.generate_binary_structure(2,1) # taxi-cab struct
if which == 0:
ras = ndimage.binary_dilation(self.cl_array,s,iterations=amount,border_value=0)
else:
ras = ndimage.binary_erosion(self.cl_array,s,iterations=amount,border_value=0)
return(ras)
def _aux_generator(self, batch_size=16, sample_set='train', datatype = None, depthres = 256, seg_joint_res = 64):
""" Auxiliary Generator
Args:
See Args section in self._generator
"""
generated_batch = {}
random.seed(time.time())
generated_batch['train_img'] = np.zeros((batch_size, 256, 256, 3), dtype=np.float32)
generated_batch['train_gtseg'] = np.zeros([batch_size, seg_joint_res, seg_joint_res], dtype = np.int8)
generated_batch['train_gt2dheat'] = np.zeros([batch_size, seg_joint_res, seg_joint_res, self.joints_num], dtype = np.float32)
generated_batch['train_gtjoints'] = np.zeros((batch_size, 64, 64, self.joints_num * self.Zres_joint), dtype=np.float32)
generated_batch['train_gtdepthre'] = np.zeros((batch_size, depthres, depthres), dtype= np.float32)
generated_batch['train_mask'] = np.zeros([batch_size, depthres, depthres],dtype = np.bool)
generated_batch['train_2djoints'] = np.zeros([batch_size, 2, self.joints_num ],dtype= np.float32)
generated_batch['train_3djoints'] = np.zeros([batch_size, 3, self.joints_num ],dtype= np.float32)
i=0
if datatype == 'normal_dataset':
generated_batch['normal_train_img'] = np.zeros((batch_size, self.normalres[0], self.normalres[1], 3), dtype=np.float32)
generated_batch['normal_train_gtnormal'] = np.zeros([batch_size, self.normalres[0], self.normalres[1], 3],
dtype=np.float32)
generated_batch['normal_train_gtdepthre'] = np.zeros((batch_size, self.normalres[0], self.normalres[1]),
dtype=np.float32)
generated_batch['normal_train_mask'] = np.zeros([batch_size, self.normalres[0], self.normalres[1]],
dtype=np.bool)
while i < batch_size:
img_name = self.filelist[self.currentindex]
type_dir = os.path.join(self.test_dir, img_name.split('/')[-4])#random.sample(getsubfolders(self.train_dir), 1)[0])
depth_dir = type_dir + '/depth_maps'
normal_dir = type_dir + '/normals'
view_type = img_name.split('/')[-2]
depth_dir = os.path.join(depth_dir, view_type)
normal_dir = os.path.join(normal_dir, view_type)
index = img_name[-9:-5]
depth_name = depth_dir + '/depth_' + index + '.npz'
normal_name = normal_dir + '/normals_' + index + '.npz'
bg_name = os.path.join(self.bg_dir, random.sample(os.listdir(self.bg_dir), 1)[0])
bg_name = os.path.join(bg_name, random.sample(os.listdir(bg_name), 1)[0])
try:
bg_img = io.imread(bg_name)
except:
self.currentindex +=1
continue
bg_img = scipy.misc.imresize(bg_img, [self.normalres[0], self.normalres[1]], interp='bilinear')
img = io.imread(img_name)
nmap = np.load(normal_name)['normals']
dmap = np.load(depth_name)['depth']
mask = dmap > 1e-4
generated_mask = np.zeros([self.normalres[0], self.normalres[1]], dtype=np.bool)
generated_mask[15:239, 15:239] = mask
generated_batch['normal_train_mask'][i] = generated_mask
img_pad = np.zeros((self.normalres[0], self.normalres[1], 3), dtype=np.uint8)
img_pad[15: 239, 15: 239, :] = img.astype(np.float32)
bg_img[generated_mask] = img_pad[generated_mask]
# plt.figure()
# plt.imshow(bg_img, aspect='auto',
# cmap=plt.get_cmap('jet'))
# plt.show()
bg_img = bg_img.astype(np.float32)
# color augmentation
if sample_set == 'train':
for j in range(3):
bg_img[:, :, j] = np.clip(
bg_img[:, :, j].astype(np.float32) / 255 * np.random.uniform(0.6, 1.4), 0.0,
1.0)
else:
for j in range(3):
bg_img[:, :, j] = np.clip(bg_img[:, :, j].astype(np.float32) / 255, 0.0, 1.0)
# print('color augmentation done!')
# whitening rgb image
meanstd = load_lua(self.meanRgb_dir)
for j in range(3):
bg_img[:, :, j] = bg_img[:, :, j] - meanstd['mean'][j]
bg_img[:, :, j] = bg_img[:, :, j] / meanstd['std'][j]
generated_batch['normal_train_img'][i,:,:,:] = bg_img
generated_batch['normal_train_gtnormal'][i, 15:239, 15:239, :] = nmap
if self.show:
plt.figure()
plt.imshow(generated_batch['normal_train_gtnormal'][i, :, :, 0], aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
#
# plt.figure()
# plt.imshow(generated_batch['normal_train_gtnormal'][i, :, :, 1], aspect='auto', cmap=plt.get_cmap('jet'))
# plt.show()
#
# plt.figure()
# plt.imshow(generated_batch['normal_train_gtnormal'][i, :, :, 2], aspect='auto', cmap=plt.get_cmap('jet'))
# plt.show()
# print(generated_batch['normal_train_mask'].shape)
# plt.figure()
# plt.imshow(generated_batch['normal_train_mask'][i, :, :, 0], aspect='auto', cmap=plt.get_cmap('jet'))
# plt.show()
generated_batch['normal_train_gtdepthre'][i, 15:239, 15:239] = dmap
i = i + 1
self.currentindex+=1
if(self.currentindex == self.datanum-1):
self._reset_filelist(datatype,sample_set)
return generated_batch
if datatype == 'realtest':
while i < batch_size:
#name = random.sample(glob.glob(self.test_dir + "/*.jpg"), 1)[0]
name = self.filelist[self.currentindex]
testimg = io.imread(name)
testimg = scipy.misc.imresize(testimg, [self.insize[1], self.insize[1]], interp='bilinear').astype(np.float32)
meanstd = load_lua(self.meanRgb_dir)
for j in range(3):
testimg[:, :, j] = np.clip(testimg[:, :, j].astype(np.float32) / 255.0, 0.0, 1.0)
testimg[:, :, j] = testimg[:, :, j] - meanstd['mean'][j]
testimg[:, :, j] = testimg[:, :, j] / meanstd['std'][j]
generated_batch['train_img'][i] = cv2.resize(testimg, (self.insize[0], self.insize[1]), interpolation=cv2.INTER_NEAREST)
i += 1
self.currentindex += 1
if self.show:
plt.figure()
plt.imshow(generated_batch['train_img'][0], aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
if(self.currentindex == self.datanum-1):
self._reset_filelist('realtest','test')
return generated_batch
while i < batch_size:
if datatype != 'detail_data' and datatype != 'up-3d':
name = self.filelist[self.currentindex]
#name = '/home/sicong/surreal/data/SURREAL/data/cmu/train/run1/ung_91_33/ung_91_33_c0001.mp4'
cap = cv2.VideoCapture(name)
length = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
frameindex = random.randint(1, length)
#frameindex = 82
if(sample_set == 'test'):
print('test file: ',name, 'frameindex: ', frameindex)
cap.set(1, frameindex - 1)
_, img_full = cap.read()
try:
img_full = cv2.cvtColor(img_full, cv2.COLOR_BGR2RGB)
except:
continue
bodyinfo = sio.loadmat(name[0:-4] + '_info.mat')
elif datatype == 'detail_data':
name = self.filelist[self.currentindex]
frameindex = name[-12:-8]
name = '/home/sicong/detail_data/data/3/0235_rgb.png'
try:
img_full = io.imread(name)
except:
self.currentindex += 1
continue
elif datatype == 'up-3d':
if sample_set == 'train':
info_dir = self.train_dir + '/pose_prepared/91/500/up-p91/'
seg_dir = self.train_dir + '/segment/up-s31/s31/'
elif sample_set == 'valid':
info_dir = self.valid_dir + '/pose_prepared/91/500/up-p91/'
seg_dir = self.valid_dir + '/segment/up-s31/s31/'
elif sample_set == 'test':
info_dir = self.test_dir + '/pose_prepared/91/500/up-p91/'
seg_dir = self.test_dir + '/segment/up-s31/s31/'
name = self.filelist[self.currentindex]
if(sample_set == 'test'):
print('test file: ',name)
# name = '/media/sicong/a86d93af-1a2e-469b-972c-f819c47cd5ee/datasets/pose_prepared/91/500/up-p91/04877_image.png'
frameindex = name[-15:-10]
try:
img_full = io.imread(name)
except:
self.currentindex +=1
continue
try:
bodyinfo = sio.loadmat(info_dir + frameindex+ '_info.mat')
except:
self.currentindex += 1
continue
if self.show:
img = Image.fromarray(img_full, 'RGB')
img.show()
if datatype != 'detail_data':
# load 2d joints to determine the bounding box
# [2 x njoints]
if datatype != 'up-3d':
if bodyinfo is None:
self.currentindex += 1
continue
joints2dfull = bodyinfo['joints2D']
if joints2dfull is None:
self.currentindex += 1
continue
if len(joints2dfull.shape) < 3:
self.currentindex += 1
continue
if frameindex - 1 >= joints2dfull.shape[2]:
self.currentindex += 1
continue
joints2d = joints2dfull[:, self.joints_subset, frameindex - 1].astype(np.int64)
joints3dfull = bodyinfo['joints3D']
if joints3dfull is None:
self.currentindex += 1
continue
if frameindex - 1 >= joints2dfull.shape[2]:
self.currentindex += 1
continue
joints3d = joints3dfull[:, self.joints_subset, frameindex - 1]
generated_batch['train_2djoints'][i,:] = joints2d
generated_batch['train_3djoints'][i,:] = joints3d
depth_full = sio.loadmat(name[0:-4] + '_depth.mat')['depth_' + str(frameindex)]
elif datatype == 'up-3d':
if bodyinfo is None:
self.currentindex += 1
continue
joints2dfull = bodyinfo['joints2D']
if joints2dfull is None:
self.currentindex += 1
continue
if len(joints2dfull.shape) < 2:
self.currentindex += 1
continue
joints2d = joints2dfull[:, self.joints_subset].astype(np.int64)
joints3dfull = np.transpose(bodyinfo['joints3D'])
if joints3dfull is None:
self.currentindex += 1
continue
joints3d = joints3dfull[:, self.joints_subset]
depth_full = sio.loadmat(info_dir + frameindex+ '_depth.mat')['depth']
#set pelvis as the original point
camLoc = bodyinfo['camLoc'][0]
if datatype == 'up-3d':
# camlocation = camLoc[2]
# joints3d[2, :] = camlocation - joints3d[2, :]
dPelvis = joints3d[2, 0]
else:
camlocation = camLoc
joints3d[0, :] = camlocation - joints3d[0, :]
dPelvis = joints3d[0, 0]
if datatype != 'up-3d':
segm_raw = sio.loadmat(name[0:-4] + '_segm.mat')['segm_'+str(frameindex)]
segm_full = util.changeSegmIx(segm_raw,
[2, 12, 9, 2, 13, 10, 2, 14, 11, 2, 14, 11, 2, 2, 2, 1, 6, 3, 7, 4, 8,
5, 8,
5]).astype(np.int8)
else:
segm_raw = cv2.imread(seg_dir+ frameindex + '_ann_vis.png')
segm_full = util.up3dtosurreal(segm_raw)
if self.show:
plt.figure()
plt.imshow(segm_full, aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
if datatype == 'up-3d':
quantized_joints3d, _ = util.quantize(joints3d[2, :], dPelvis, self.stp_joint, self.Zres_joint)
quantized_joints3d = quantized_joints3d * -1
relative_depth, _ = util.relative_up3d(depth_full, dPelvis, self.stp, self.Zres) # self.halfrange
elif datatype != 'detail_data':
quantized_joints3d, _ = util.quantize(joints3d[0, :], dPelvis, self.stp_joint, self.Zres_joint)
quantized_joints3d = quantized_joints3d * -1
relative_depth, _ = util.relative(depth_full,dPelvis, self.stp, self.Zres) #self.halfrange
# TODO: 1. resize quantized_depth 2. output dense continuous relative depth in util.quantize
if self.show:
plt.figure()
plt.imshow(depth_full, aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
if self.show:
plt.figure()
plt.imshow(relative_depth, aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
else:
depth_full = io.imread(name[0:-8] + '_depth.png')
depthcount = np.sum(depth_full > 100)
if depthcount < 100 * 100:
self.currentindex += 1
continue
if datatype != 'detail_data':
# crop, scale
rot = 0
scale = util.getScale(joints2d)
center = util.getCenter(joints2d)
else:
# crop, scale
rot = 0
scale = util.getScale_detail(depth_full)
center = util.getCenter_detail(depth_full)
if (center[0] < 1 or center[1] < 1 or center[1] > img_full.shape[0] or center[0] > img_full.shape[1]):
self.currentindex +=1
continue
## for rgb image
if datatype != 'up-3d' and datatype!= 'detail_data':
img = util.cropfor3d(img_full, center, scale, rot, self.insize[1], 'bilinear')
elif datatype == 'detail_data':
img = util_detail.cropfor3d(img_full, center, scale, rot, self.insize[1], 'bilinear')
elif datatype == 'up-3d':
norm_factor = np.array([self.insize[1]/img_full.shape[1], self.insize[1]/img_full.shape[0]], dtype=np.float32)
img = scipy.misc.imresize(img_full, [self.insize[1], self.insize[1]], interp= 'bilinear')
badexample = False
for j in range(joints2d.shape[1]):
joints2d_rescaled = np.multiply(joints2d[:,j],norm_factor).astype(np.int64)
if joints2d_rescaled[0] < 0 or joints2d_rescaled[0] > 256 or joints2d_rescaled[1] < 0 or joints2d_rescaled[1] > 256:
badexample = True
if badexample:
self.currentindex += 1
continue
if img is None:
self.currentindex+=1
continue
if (img.shape[0] == 0 or img.shape[1] == 0):
self.currentindex+=1
continue
if self.show:
imgnew = Image.fromarray(img, 'RGB')
imgnew.show()
# color augmentation
img_bak = img
img = img.astype(np.float32)
if sample_set == 'train':
for j in range(3):
img[:, :, j] = np.clip(img[:, :, j].astype(np.float32) / 255 * np.random.uniform(0.6, 1.4), 0.0,
1.0)
else:
for j in range(3):
img[:, :, j] = np.clip(img[:, :, j].astype(np.float32) / 255, 0.0, 1.0)
# print('color augmentation done!')
# whitening rgb image
meanstd = load_lua(self.meanRgb_dir)
for j in range(3):
img[:, :, j] = img[:, :, j] - meanstd['mean'][j]
img[:, :, j] = img[:, :, j] / meanstd['std'][j]
generated_batch['train_img'][i] = img
## for depth
if datatype == 'detail_data':
depm_continue = util_detail.cropfor3d(depth_full,center,scale,rot,self.insize[1],'bilinear')
if self.show:
plt.figure()
plt.imshow(depth_full, aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
if self.show:
plt.figure()
plt.imshow(depm_continue, aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
mask =depm_continue>100
depm_continue[depm_continue < 100] = 15 * 1000.0
final_depth = depm_continue/1000.0
median_value =np.median(final_depth[final_depth<5])
final_depth = final_depth - median_value + 0.10
final_depth[final_depth>5] = 0.60
generated_batch['train_gtdepthre'][i, :, :] = final_depth
mask = ndimage.binary_erosion(mask).astype(mask.dtype)
generated_batch['train_mask'][i,:,:] = mask
elif datatype == 'up-3d':
depm_continue = cv2.resize(relative_depth.astype(np.float32), (depthres, depthres), interpolation=cv2.INTER_NEAREST)
generated_batch['train_gtdepthre'][i, :, :] = depm_continue
mask = depm_continue<0.59
mask = ndimage.binary_erosion(mask).astype(mask.dtype)
generated_batch['train_mask'][i,:,:] = mask
else:
depm_continue = util.cropdepth(relative_depth,center,scale,rot,self.insize[1],0.60)
generated_batch['train_gtdepthre'][i, :, :] = cv2.resize(depm_continue,(depthres, depthres),interpolation=cv2.INTER_NEAREST)
mask = depm_continue<0.59
mask = ndimage.binary_erosion(mask).astype(mask.dtype)
generated_batch['train_mask'][i,:,:] = mask
if self.show:
plt.figure()
plt.imshow(generated_batch['train_gtdepthre'][i, :, :], aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
# if self.show:
# plt.figure()
# plt.imshow(mask, aspect='auto', cmap=plt.get_cmap('jet'))
# plt.show()
## for 2d segmentation
if datatype == 'up-3d':
segm = cv2.resize(segm_full, (seg_joint_res, seg_joint_res),
interpolation=cv2.INTER_NEAREST)
generated_batch['train_gtseg'][i,:,:] = segm
elif datatype != 'detail_data':
segm = util.cropfor3d(segm_full, center, scale, rot, self.insize[1],'nearest')
generated_batch['train_gtseg'][i,:,:] = cv2.resize(segm, (seg_joint_res, seg_joint_res),
interpolation=cv2.INTER_NEAREST)
if self.show:
plt.figure()
plt.imshow(segm, aspect='auto', cmap=plt.get_cmap('jet'))
plt.show()
## for 2d joints
if datatype != 'detail_data':
# TODO: create 2d heatmaps
sigma_2d_inscale = math.floor(2 * self.insize[0]/self.outsize[0])
out_2d = np.zeros([self.insize[0], self.insize[1], self.joints_num])
for j in range(self.joints_num):
if datatype == 'up-3d':
#pt = util.transform(joints2d[:, j], center, scale, 0, self.insize[0], False)
pt = np.multiply(joints2d[:, j], norm_factor).astype(np.int64)
# print('joints: ', joints2d[:, j], 'pt: ', pt)
else:
pt = util.transform(joints2d[:, j], center, scale, 0, self.insize[0], False)
heat_slice = util.Drawgaussian2D(img,pt,sigma_2d_inscale)
# if np.sum(heat_slice) > 1e-2:
# heat_slice /= np.sum(heat_slice)
# else:
# heat_slice *= 0
#print('heat_slice.shape',heat_slice.shape)
out_2d[:, :, j] = heat_slice
# if self.show:
# plt.figure()
# plt.imshow(heat_slice, aspect='auto', cmap=plt.get_cmap('jet'))
# plt.show()
out_2d = cv2.resize(out_2d,(seg_joint_res,seg_joint_res),interpolation=cv2.INTER_NEAREST)
generated_batch['train_gt2dheat'][i] = out_2d
if self.show:
# img4show = img
# for j in range(3):
# img4show[:, :, j] = img4show[:, :, j] - meanstd['mean'][j]
# img4show[:, :, j] = img4show[:, :, j] / meanstd['std'][j]
# img4show = img4show * 255.0
visualizer.draw2dskeleton(img_bak.astype(np.uint8), out_2d)
# for 3d joints
#print('draw3d---------------------------------------------------')
if datatype != 'detail_data':
out = np.zeros([self.outsize[0], self.outsize[1], self.joints_num * self.Zres_joint])
sigma_2d = 2
size_z = 2 * math.floor((6* sigma_2d * self.Zres_joint / self.outsize[0] +1) / 2) + 1
for j in range(self.joints_num):
#if joints2d[1,j] >= img_full.shape[0] or joints2d[0,j] >=img_full.shape[1] or joints2d[1,j]<0 or joints2d[0,j]<0:
#continue
z = quantized_joints3d[j]
if datatype == 'up-3d':
pt = np.multiply(joints2d[:, j], norm_factor/4).astype(np.int64)
else:
pt = util.transform(joints2d[:, j], center, scale, 0, self.outsize[0], False)
out[:,:,j * self.Zres_joint : (j+1) * self.Zres_joint] = util.Drawguassian3D(out[:,:,j * self.Zres_joint : (j+1) * self.Zres_joint], pt, z , sigma_2d, size_z)
generated_batch['train_gtjoints'][i] = out
if self.show:
visualizer.draw3dskeleton(self.joints_num,self.Zres_joint,out)
i = i+1
self.currentindex +=1
if(self.currentindex==self.datanum-1):
self._reset_filelist(datatype,sample_set)
return generated_batch
def __call__(self, grid, color, opacity=1.0):
if grid.dtype == np.bool:
xo, yo, zo = np.where(grid)
else:
xo, yo, zo = grid[:, 0], grid[:, 1], grid[:, 2]
mlab.points3d(self.voxel_data["x_grid"][xo],
self.voxel_data["y_grid"][yo],
self.voxel_data["z_grid"][zo],
color=color,
scale_mode="none",
scale_factor=self.voxel_data["vox_size"],
mode='cube',
opacity=opacity)
# Make an outline of the air_inside for quicker visualization.
ero_vis = ndimage.binary_erosion(air_inside)
air_inside = air_inside & ~ero_vis
scene = mlab.figure(size=(400, 400))
scene.scene.background = (0.2, 0.2, 0.2)
vox_plotter = Voxel_Plotter(voxel_dat)
vox_plotter(air_inside, (0.6, 0.6, 0.8), 0.1)
vox_plotter(exit_grid, (1.0, 0.0, 0.0))
vox_plotter(crew_points, (0.3, 1.0, 0.3))
mlab.show()
def _run_interface(self, runtime):
from scipy import ndimage as sim
fmap_nii = nb.load(self.inputs.in_file)
data = np.squeeze(fmap_nii.get_data().astype(np.float32))
# Despike / denoise (no-mask)
if self.inputs.despike:
data = _despike2d(data, self.inputs.despike_threshold)
mask = None
if isdefined(self.inputs.in_mask):
masknii = nb.load(self.inputs.in_mask)
mask = masknii.get_data().astype(np.uint8)
# Dilate mask
if self.inputs.mask_erode > 0:
struc = sim.iterate_structure(
sim.generate_binary_structure(3, 2), 1)
mask = sim.binary_erosion(
mask, struc,
iterations=self.inputs.mask_erode).astype(np.uint8) # pylint: disable=no-member
self._results['out_file'] = fname_presuffix(self.inputs.in_file,
suffix='_enh',
newpath=runtime.cwd)
datanii = nb.Nifti1Image(data, fmap_nii.affine, fmap_nii.header)
if self.inputs.unwrap:
data = _unwrap(data, self.inputs.in_magnitude, mask)
self._results['out_unwrapped'] = fname_presuffix(
self.inputs.in_file, suffix='_unwrap', newpath=runtime.cwd)
nb.Nifti1Image(data, fmap_nii.affine, fmap_nii.header).to_filename(
self._results['out_unwrapped'])
if not self.inputs.bspline_smooth:
datanii.to_filename(self._results['out_file'])
return runtime
else:
from ..utils import bspline as fbsp
from statsmodels.robust.scale import mad
# Fit BSplines (coarse)
bspobj = fbsp.BSplineFieldmap(datanii,
weights=mask,
njobs=self.inputs.num_threads)
bspobj.fit()
smoothed1 = bspobj.get_smoothed()
# Manipulate the difference map
diffmap = data - smoothed1.get_data()
sderror = mad(diffmap[mask > 0])
LOGGER.info('SD of error after B-Spline fitting is %f', sderror)
errormask = np.zeros_like(diffmap)
errormask[np.abs(diffmap) > (10 * sderror)] = 1
errormask *= mask
nslices = 0
try:
errorslice = np.squeeze(
np.argwhere(errormask.sum(0).sum(0) > 0))
nslices = errorslice[-1] - errorslice[0]
except IndexError: # mask is empty, do not refine
pass
if nslices > 1:
diffmapmsk = mask[..., errorslice[0]:errorslice[-1]]
diffmapnii = nb.Nifti1Image(
diffmap[..., errorslice[0]:errorslice[-1]] * diffmapmsk,
datanii.affine, datanii.header)
bspobj2 = fbsp.BSplineFieldmap(diffmapnii,
knots_zooms=[24., 24., 4.],
njobs=self.inputs.num_threads)
bspobj2.fit()
smoothed2 = bspobj2.get_smoothed().get_data()
final = smoothed1.get_data().copy()
final[..., errorslice[0]:errorslice[-1]] += smoothed2
else:
final = smoothed1.get_data()
nb.Nifti1Image(final, datanii.affine, datanii.header).to_filename(
self._results['out_file'])
return runtime
def main(visualize=False,
learn=False,
actions=None,
subjects=None,
n_frames=220):
# learn = True
# learn = False
if actions is []:
actions = [2]
if subjects is []:
subjects = [2]
# actions = [1]
# actions = [1, 2, 3, 4, 5]
# subjects = [1]
if 1:
MHAD = True
cam = MHADPlayer(base_dir='/Users/colin/Data/BerkeleyMHAD/',
kinect=1,
actions=actions,
subjects=subjects,
reps=[1],
get_depth=True,
get_color=True,
get_skeleton=True,
fill_images=False)
else:
MHAD = False
cam = KinectPlayer(base_dir='./',
device=1,
bg_subtraction=True,
get_depth=True,
get_color=True,
get_skeleton=True,
fill_images=False)
bg = Image.open(
'/Users/colin/Data/JHU_RGBD_Pose/CIRL_Background_A.tif')
# cam = KinectPlayer(base_dir='./', device=2, bg_subtraction=True, get_depth=True, get_color=True, get_skeleton=True, fill_images=False)
# bg = Image.open('/Users/colin/Data/JHU_RGBD_Pose/CIRL_Background_B.tif')
cam.bgSubtraction.backgroundModel = np.array(bg.getdata()).reshape(
[240, 320]).clip(0, 4500)
height, width = cam.depthIm.shape
skel_previous = None
face_detector = FaceDetector()
hand_detector = HandDetector(cam.depthIm.shape)
# curve_detector = CurveDetector(cam.depthIm.shape)
# Video writer
# video_writer = cv2.VideoWriter("/Users/colin/Desktop/test.avi", cv2.cv.CV_FOURCC('M','J','P','G'), 15, (320,240))
# Save Background model
# im = Image.fromarray(cam.depthIm.astype(np.int32), 'I')
# im.save("/Users/Colin/Desktop/k2.png")
# Setup pose database
append = True
append = False
# pose_database = PoseDatabase("PoseDatabase.pkl", learn=learn, search_joints=[0,4,7,10,13], append=append)
pose_database = PoseDatabase("PoseDatabase.pkl",
learn=learn,
search_joints=[0, 2, 4, 5, 7, 10, 13],
append=append)
# Setup Tracking
skel_init, joint_size, constraint_links, features_joints, skel_parts, convert_to_kinect = get_14_joint_properties(
)
constraint_values = []
for c in constraint_links:
constraint_values += [
np.linalg.norm(skel_init[c[0]] - skel_init[c[1]], 2)
]
constraint_values = np.array(constraint_values)
skel_current = None #skel_init.copy()
skel_previous = None #skel_current.copy()
# Evaluation
accuracy_all_db = []
accuracy_all_track = []
joint_accuracy_db = []
joint_accuracy_track = []
# geo_accuracy = []
# color_accuracy = []
# lbp_accuracy = []
frame_count = 0
frame_rate = 1
if not MHAD:
cam.next(350)
frame_prev = 0
# try:
if 1:
while cam.next(frame_rate): # and frame_count < n_frames:
if frame_count - frame_prev > 100:
print ""
print "Frame #{0:d}".format(frame_count)
frame_prev = frame_count
if not MHAD:
if len(cam.users) == 0:
continue
else:
# cam.users = [np.array(cam.users[0]['jointPositions'].values())]
if np.any(cam.users[0][0] == -1):
continue
cam.users[0][:, 1] *= -1
cam.users_uv_msr = [
cam.camera_model.world2im(cam.users[0], [240, 320])
]
# Apply mask to image
if MHAD:
mask = cam.get_person(2) > 0
else:
mask = cam.get_person() > 0
if np.all(mask == False):
continue
im_depth = cam.depthIm
cam.depthIm[cam.depthIm > 3000] = 0
im_color = cam.colorIm * mask[:, :, None]
cam.colorIm *= mask[:, :, None]
pose_truth = cam.users[0]
pose_truth_uv = cam.users_uv_msr[0]
# Get bounding box around person
box = nd.find_objects(mask)[0]
d = 20
# Widen box
box = (slice(np.maximum(box[0].start-d, 0), \
np.minimum(box[0].stop+d, height-1)), \
slice(np.maximum(box[1].start-d, 0), \
np.minimum(box[1].stop+d, width-1)))
box_corner = [box[0].start, box[1].start]
''' ---------- ----------------------------------- --------'''
''' ----------- Feature Detector centric approach ---------'''
''' ---------- ----------------------------------- --------'''
''' ---- Calculate Detectors ---- '''
# Face detection
face_detector.run(im_color[box])
# Skin detection
hand_markers = hand_detector.run(im_color[box], n_peaks=3)
# Calculate Geodesic Extrema
im_pos = cam.camera_model.im2PosIm(
cam.depthIm * mask)[box] * mask[box][:, :, None]
geodesic_markers = geodesic_extrema_MPI(im_pos,
iterations=5,
visualize=False)
_, geo_map = geodesic_extrema_MPI(im_pos,
iterations=1,
visualize=True)
geodesic_markers_pos = im_pos[geodesic_markers[:, 0],
geodesic_markers[:, 1]]
markers = list(geodesic_markers) + list(
hand_markers) #+ list(lop_markers) + curve_markers
markers = np.array([list(x) for x in markers])
''' ---- Database lookup ---- '''
if 1:
pts_mean = im_pos[(im_pos != 0)[:, :, 2]].mean(0)
if learn:
# Normalize pose
pose_uv = cam.users_uv[0]
if np.any(pose_uv == 0):
print "skip"
frame_count += frame_rate
continue
pose_database.update(pose_truth - pts_mean)
else:
# Concatenate markers
markers = list(geodesic_markers) + hand_markers
markers = np.array([list(x) for x in markers])
# Normalize pose
pts = im_pos[markers[:, 0], markers[:, 1]]
pts = np.array([x for x in pts if x[0] != 0])
pts -= pts_mean
# Get closest pose
pose = pose_database.query(pts, knn=5)
# embed()
for i in range(5):
pose_tmp = cam.camera_model.world2im(
pose[i] + pts_mean, cam.depthIm.shape)
cam.colorIm = display_skeletons(cam.colorIm,
pose_tmp,
skel_type='Kinect',
color=(0, i * 40 + 50,
0))
pose = pose[0]
# im_pos -= pts_mean
# R,t = IterativeClosestPoint(pose, im_pos.reshape([-1,3])-pts_mean, max_iters=5, min_change=.001, pt_tolerance=10000)
# pose = np.dot(R.T, pose.T).T - t
# pose = np.dot(R, pose.T).T + t
pose += pts_mean
pose_uv = cam.camera_model.world2im(
pose, cam.depthIm.shape)
# print pose
surface_map = nd.distance_transform_edt(
-nd.binary_erosion(mask[box]),
return_distances=False,
return_indices=True)
try:
pose_uv[:, :2] = surface_map[:, pose_uv[:, 0] -
box_corner[0],
pose_uv[:, 1] -
box_corner[1]].T + [
box_corner[0],
box_corner[1]
]
except:
pass
pose = cam.camera_model.im2world(pose_uv,
cam.depthIm.shape)
# print pose
''' ---- Tracker ---- '''
# surface_map = nd.distance_transform_edt(-mask[box], return_distances=False, return_indices=True)
# surface_map = nd.distance_transform_edt(im_pos[:,:,2]==0, return_distances=False, return_indices=True)
if skel_previous is None:
# if 1:
skel_previous = pose.copy()
skel_current = pose.copy()
skel_previous_uv = pose_uv.copy()
skel_current_uv = pose_uv.copy()
for _ in range(1):
# ---- (Step 1A) Find feature coordespondences ----
try:
skel_previous_uv[:, :
2] = surface_map[:,
skel_previous_uv[:, 0] -
box_corner[0],
skel_previous_uv[:, 1] -
box_corner[1]].T + [
box_corner[0],
box_corner[1]
]
except:
pass
skel_current = cam.camera_model.im2world(
skel_previous_uv, cam.depthIm.shape)
# Alternative method: use kdtree
## Calc euclidian distance between each pixel and all joints
px_corr = np.zeros(
[im_pos.shape[0], im_pos.shape[1],
len(skel_current)])
# for i,s in enumerate(pose):
# for i,s in enumerate(skel_current):
# px_corr[:,:,i] = np.sqrt(np.sum((im_pos - s)**2, -1))# / joint_size[i]**2
# for i,s in enumerate(pose_uv):
# Geodesics
for i, s in enumerate(skel_previous_uv):
''' Problem: need to constrain pose_uv to mask '''
_, geo_map = geodesic_extrema_MPI(
im_pos, [s[0] - box_corner[0], s[1] - box_corner[1]],
iterations=1,
visualize=True)
px_corr[:, :, i] = geo_map
subplot(2, 7, i + 1)
# imshow(geo_map, vmin=0, vmax=2000)
# axis('off')
px_corr[geo_map == 0, i] = 9999
cv2.imshow('gMap', (px_corr.argmin(-1) + 1) / 15. * mask[box])
## Handle occlusions by argmax'ing over set of skel parts
# visible_configurations = list(it.product([0,1], repeat=5))[1:]
visible_configurations = [
# [0,1,1,1,1],
# [1,0,0,0,0],
[1, 1, 1, 1, 1]
]
px_visibility_label = np.zeros([
im_pos.shape[0], im_pos.shape[1],
len(visible_configurations)
],
dtype=np.uint8)
visible_scores = np.ones(len(visible_configurations)) * np.inf
# Try each occlusion configuration set
for i, v in enumerate(visible_configurations):
visible_joints = list(
it.chain.from_iterable(skel_parts[np.array(v) > 0]))
px_visibility_label[:, :, i] = np.argmin(
px_corr[:, :, visible_joints],
-1) #.reshape([im_pos.shape[0], im_pos.shape[1]])
visible_scores[i] = np.min(px_corr[:, :, visible_joints],
-1).sum()
# Choose best occlusion configuration
occlusion_index = np.argmin(visible_scores)
occlusion_configuration = visible_configurations[
occlusion_index]
occlusion_set = list(
it.chain.from_iterable(skel_parts[np.array(
visible_configurations[occlusion_index]) > 0]))
# Choose label for pixels based on occlusion configuration
px_label = px_visibility_label[:, :,
occlusion_index] * mask[box]
px_label_flat = px_visibility_label[:, :, occlusion_index][
mask[box]].flatten()
visible_joints = [
1 if x in occlusion_set else 0 for x in range(len(pose))
]
# print visible_joints
# Project distance to joint's radius
px_joint_displacement = im_pos[
mask[box]] - skel_current[px_label_flat]
px_joint_magnitude = np.sqrt(
np.sum(px_joint_displacement**2, -1))
joint_mesh_pos = skel_current[
px_label_flat] + px_joint_displacement * (
joint_size[px_label_flat] / px_joint_magnitude)[:,
None]
px_joint_displacement = joint_mesh_pos - im_pos[mask[box]]
# Ensure pts aren't too far away
px_joint_displacement[np.abs(px_joint_displacement) > 500] = 0
# embed()
if 0:
x = im_pos.copy() * 0
x[mask[box]] = joint_mesh_pos
for i in range(3):
subplot(1, 4, i + 1)
imshow(x[:, :, i])
axis('off')
subplot(1, 4, 4)
imshow((px_label + 1) * mask[box])
# Calc the correspondance change in position for each joint
correspondence_displacement = np.zeros([len(skel_current), 3])
ii = 0
for i, _ in enumerate(skel_current):
if i in occlusion_set:
labels = px_label_flat == i
correspondence_displacement[i] = np.sum(
px_joint_displacement[px_label_flat == ii], 0
) / np.sum(
px_joint_displacement[px_label_flat == ii] != 0)
ii += 1
correspondence_displacement = np.nan_to_num(
correspondence_displacement)
# print correspondence_displacement
# Viz correspondences
if 0:
x = im_pos.copy() * 0
x[mask[box]] = px_joint_displacement
for i in range(3):
subplot(1, 4, i + 1)
imshow(x[:, :, i])
axis('off')
subplot(1, 4, 4)
imshow((px_label + 1) * mask[box])
# embed()
# for j in range(3):
# for i in range(14):
# subplot(3,14,j*14+i+1)
# imshow(x[:,:,j]*((px_label==i)*mask[box]))
# axis('off')
show()
# ---- (Step 2) Update pose state, x ----
lambda_p = .0
lambda_c = 1.
skel_prev_difference = (skel_current - skel_previous)
# print skel_prev_difference
skel_current = skel_previous \
+ lambda_p * skel_prev_difference \
- lambda_c * correspondence_displacement#\
# ---- (Step 3) Add constraints ----
if 1:
# A: Link lengths / geometry
# skel_current = link_length_constraints(skel_current, constraint_links, constraint_values, alpha=.5)
skel_current = geometry_constraints(skel_current,
joint_size,
alpha=0.5)
skel_current = collision_constraints(
skel_current, constraint_links)
skel_img_box = (cam.camera_model.world2im(
skel_current, cam.depthIm.shape) -
[box[0].start, box[1].start, 0]
) #/mask_interval
skel_img_box = skel_img_box.clip([0, 0, 0], [
box[0].stop - box[0].start - 1,
box[1].stop - box[1].start - 1, 9999
])
# skel_img_box = skel_img_box.clip([0,0,0], [cam.depthIm.shape[0]-1, cam.depthIm.shape[1]-1, 9999])
# B: Ray-cast constraints
# embed()
skel_current, skel_current_uv = ray_cast_constraints(
skel_current, skel_img_box, im_pos, surface_map,
joint_size)
# skel_img_box -= [box[0].start, box[1].start, 0]
# # Map back from mask to image
# try:
# skel_current_uv[:,:2] = surface_map[:, skel_img_box[:,0], skel_img_box[:,1]].T# + [box_corner[0], box_corner[1]]
# except:
# pass
prob = link_length_probability(skel_current,
constraint_links,
constraint_values, 100)
# print "Prob:", np.mean(prob), np.min(prob), prob
print frame_count
thresh = .05
if np.min(prob) < thresh: # and frame_count > 1:
print 'Resetting pose'
for c in constraint_links[prob < thresh]:
for cc in c:
skel_current_uv[c] = pose_uv[c] - [
box[0].start, box[1].start, 0
]
skel_current[c] = pose[c]
# skel_current_uv = pose_uv.copy() - [box[0].start, box[1].start, 0]
# skel_current = pose.copy()
skel_current_uv = skel_current_uv + [
box[0].start, box[1].start, 0
]
skel_current = cam.camera_model.im2world(
skel_current_uv, cam.depthIm.shape)
else:
skel_current_uv = (cam.camera_model.world2im(
skel_current, cam.depthIm.shape))
# skel_img_box = skel_img_box.clip([0,0,0], [cam.depthIm.shape[0]-1, cam.depthIm.shape[1]-1, 9999])
# Update for next round
skel_previous = skel_current.copy()
skel_previous_uv = skel_current_uv.copy()
''' ---- Accuracy ---- '''
# embed()
if 1 and not learn:
# pose_truth = cam.users[0]
error_db = pose_truth - pose
error_track = pose_truth - skel_current
# print "Error", error
error_l2_db = np.sqrt(np.sum(error_db**2, 1))
error_l2_track = np.sqrt(np.sum(error_track**2, 1))
joint_accuracy_db += [error_l2_db]
joint_accuracy_track += [error_l2_track]
accuracy_db = np.sum(error_l2_db < 150) / 14.
accuracy_track = np.sum(error_l2_track < 150) / 14.
print "Current db:", accuracy_db, error_l2_db.mean()
print "Current track:", accuracy_track, error_l2_track.mean()
print ""
accuracy_all_db += [accuracy_db]
accuracy_all_track += [accuracy_track]
# print "Running avg:", np.mean(accuracy_all)
# print "Joint avg (per-joint):", np.mean(joint_accuracy_all, -1)
# print "Joint avg (overall):", np.mean(joint_accuracy_all)
''' --- Visualization --- '''
display_markers(cam.colorIm,
hand_markers[:2],
box,
color=(0, 250, 0))
if len(hand_markers) > 2:
display_markers(cam.colorIm, [hand_markers[2]],
box,
color=(0, 200, 0))
display_markers(cam.colorIm,
geodesic_markers,
box,
color=(200, 0, 0))
# display_markers(cam.colorIm, curve_markers, box, color=(0,100,100))
# display_markers(cam.colorIm, lop_markers, box, color=(0,0,200))
cam.colorIm = display_skeletons(cam.colorIm,
pose_truth_uv,
skel_type='Kinect',
color=(0, 255, 0))
cam.colorIm = display_skeletons(cam.colorIm,
pose_uv,
skel_type='Kinect')
cam.colorIm = display_skeletons(cam.colorIm,
skel_current_uv,
skel_type='Kinect',
color=(0, 0, 255))
# cam.visualize(color=True, depth=False)
cam.visualize(color=True, depth=True)
# embed()
# ------------------------------------------------------------
# video_writer.write((geo_clf_map/float(geo_clf_map.max())*255.).astype(np.uint8))
# video_writer.write(cam.colorIm[:,:,[2,1,0]])
frame_count += frame_rate
# except:
# pass
print "-- Results for subject {:d} action {:d}".format(
subjects[0], actions[0])
print "Running avg (db):", np.mean(accuracy_all_db)
print "Running avg (track):", np.mean(accuracy_all_track)
print "Joint avg (overall db):", np.mean(joint_accuracy_db)
print "Joint avg (overall track):", np.mean(joint_accuracy_track)
# print 'Done'
embed()
return
def _erosion(self, mat, r):
if r > 0:
struct = self.get_circular_mask(r)
mat = ndimage.binary_erosion(mat, struct, border_value=1)
return mat
def make_golden_standard_and_mask(path, sc=1, zoom=False):
# %%
start = time.time()
preprocess_data(path, 'good', sc, redo=False)
proc_path = path + 'processed_data/'
if sc == 1:
g = np.load(proc_path + 'g_good.npy')
else:
g = np.load(proc_path + 'g_good_sc' + str(sc) + '.npy')
g = np.transpose(g, (2, 0, 1))
gc.collect()
# %%
meta = load_meta(path + 'good/', sc)
vox = g.shape[0]
dpixsize = meta['pix_size']
s2d = meta['s2d']
s2o = meta['s2o']
o2d = meta['o2d']
if zoom:
magn = 1
else:
magn = s2o / s2d
vox_size = dpixsize * magn
minsize = -vox * vox_size / 2
maxsize = vox * vox_size / 2
vol_geom = astra.create_vol_geom(vox, vox, vox, minsize, maxsize, minsize,
maxsize, minsize, maxsize)
ang = np.shape(g)[1]
angles = np.linspace(np.pi / ang, (2 + 1 / ang) * np.pi, ang, False)
proj_geom = astra.create_proj_geom('cone', dpixsize, dpixsize,
np.shape(g)[0],
np.shape(g)[2], angles, s2o, o2d)
# %%
# Create projection data from this
#proj_id, proj_data = astra.create_sino3d_gpu(cube, proj_geom, vol_geom)
proj_id = astra.data3d.create('-proj3d', proj_geom, g)
#proj_id = astra.data3d.create('-proj3d', proj_geom, vol_geom)
projector_id = astra.create_projector('cuda3d', proj_geom, vol_geom)
# %%
# Create a data object for the reconstruction
rec_id = astra.data3d.create('-vol', vol_geom)
# Set up the parameters for a reconstruction algorithm using the GPU
#W = astra.OpTomo(proj_id)
astra.plugin.register(astra.plugins.SIRTPlugin)
cfg = astra.astra_dict('SIRT-PLUGIN')
# cfg = astra.astra_dict('FDK_CUDA')
cfg['ReconstructionDataId'] = rec_id
cfg['ProjectionDataId'] = proj_id
cfg['ProjectorId'] = projector_id
cfg['option'] = {}
cfg['option']['MinConstraint'] = 0
# Create the algorithm object from the configuration structure
alg_id = astra.algorithm.create(cfg)
# SIRT
astra.algorithm.run(alg_id, 300)
# Get the result
rec = astra.data3d.get(rec_id)
rec = np.transpose(rec, (2, 1, 0))
save = np.zeros((3, vox, vox))
save[0, :, :], save[1, :, :] = rec[:, :, vox // 2], rec[:, vox // 2, :]
save[2, :, :] = rec[vox // 2, :, :]
np.save(proc_path + 'rec_ax_SIRT300', save)
# %%
if sc == 1:
np.save(proc_path + 'rec_SIRT300', rec)
else:
np.save(proc_path + 'rec_SIRT300_sc' + str(sc), rec)
end = time.time()
print((end - start), 'Finished SIRT 300 reconstructionn')
## Clean up. Note that GPU memory is tied up in the algorithm object,
## and main RAM in the data objects.
astra.algorithm.delete(alg_id)
astra.data3d.delete(rec_id)
astra.data3d.delete(proj_id)
astra.projector3d.delete(projector_id)
# %%
rec *= (rec > 0.03)
edge = vox // 32
edge_t = np.zeros(np.shape(rec))
edge_t[edge:-edge, edge:-edge, edge:-edge] = 1
rec *= edge_t
del edge_t
save[0, :, :], save[1, :, :] = rec[:, :, vox // 2], rec[:, vox // 2, :]
save[2, :, :] = rec[vox // 2, :, :]
np.save(proc_path + 'GT_ax', save)
diter = int(1.5 * 2**(np.log2(vox) - 5))
it = 5
mask = sp.binary_erosion(rec, iterations=it)
mask = sp.binary_dilation(mask, iterations=diter + it)
save[0, :, :], save[1, :, :] = mask[:, :, vox // 2], mask[:, vox // 2, :]
save[2, :, :] = mask[vox // 2, :, :]
np.save(proc_path + 'mask_ax', save)
# %%
if sc == 1:
np.save(proc_path + 'ground_truth.npy', rec)
np.save(proc_path + 'mask.npy', mask)
else:
np.save(proc_path + 'ground_truth_sc' + str(sc) + '.npy', rec)
np.save(proc_path + 'mask_sc' + str(sc) + '.npy', mask)
t3 = time.time()
print(t3 - end, 'Finished computing mask and ground truth')
mybet.inputs.in_file = dpath + 'img_sm.nii.gz'
mybet.inputs.out_file = dpath + 'img_bet.nii.gz'
mybet.inputs.frac = 0.01
mybet.inputs.robust = True
mybet.inputs.output_type = "NIFTI_GZ"
result = mybet.run()
# step 6
img_bet = nib.load(dpath + 'img_bet.nii.gz')
img_bet_pixels = img_bet.get_data().astype(np.int16)
img_bet_bin = cv2.threshold(img_bet_pixels, 0, 1, cv2.THRESH_BINARY)[1]
img_bet_mask = np.transpose(img_bet_bin, (2, 0, 1))
for i in range(len(img_bet_mask)):
img_bet_mask[i] = scipy.ndimage.morphology.binary_fill_holes(img_bet_mask[i])
img_bet_mask = np.transpose(img_bet_mask, (1, 2, 0))
img_final_msk = ndimage.binary_erosion(img_bet_mask).astype(img_bet_mask.dtype)
# step 7
img_final_msk = largest_cc(img_final_msk)
img_final_msk = np.transpose(img_final_msk, (2, 0, 1))
for i in range(len(img_final_msk)):
img_final_msk[i] = scipy.ndimage.morphology.binary_fill_holes(img_final_msk[i])
img_final_msk = np.transpose(img_final_msk, (1, 2, 0))
# step 8
img_preprocessed = img_pixels * img_final_msk
save_img = nib.Nifti1Image(img_preprocessed, affine=img.affine, header = img_hdr)
nib.save(save_img, cur_dir + '/Brain' + basename[5:])
def detect_corpus_callosum(tracks,
plane=91,
ysize=217,
zsize=181,
width=1.0,
use_atlas=0,
use_preselected_tracks=0,
ball_radius=5):
""" Detect corpus callosum in a mni registered dataset of shape
(181,217,181)
Parameters:
----------------
tracks: sequence
of tracks
Returns:
----------
cc_indices: sequence
with the indices of the corpus_callosum tracks
left_indices: sequence
with the indices of the rest of the brain
"""
cc = []
#for every track
for (i, t) in enumerate(tracks):
#for every index of any point in the track
for pi in range(len(t) - 1):
#if track segment is cutting the plane (assuming the plane is at the x-axis X=plane)
if (t[pi][0] <= plane
and t[pi + 1][0] >= plane) or (t[pi + 1][0] <= plane
and t[pi][0] >= plane):
v = t[pi + 1] - t[pi]
k = (plane - t[pi][0]) / v[0]
hit = k * v + t[pi]
#report the index of the track and the point of intersection with the plane
cc.append((i, hit))
#indices
cc_i = [c[0] for c in cc]
print 'Number of tracks cutting plane Before', len(cc_i)
#hit points
cc_p = np.array([c[1] for c in cc])
# p_neighb=len(cc_p)*[0]
# cnt=0
#imaging processing from now on
im = np.zeros((ysize, zsize))
im2 = np.zeros((ysize, zsize))
im_track = {}
cnt = 0
for p in cc_p:
p1 = int(round(p[1]))
p2 = int(round(p[2]))
im[p1, p2] = 1
im2[p1, p2] = im2[p1, p2] + 1
try:
im_track[(p1, p2)] = im_track[(p1, p2)] + [cc_i[cnt]]
except:
im_track[(p1, p2)] = [cc_i[cnt]]
cnt += 1
#create a cross structure
cross = np.array([[0, 1, 0], [1, 1, 1], [0, 1, 0]])
im = (255 * im).astype('uint8')
im2 = (np.interp(im2, [0, im2.max()], [0, 255])).astype('uint8')
#erosion
img = nd.binary_erosion(im, structure=cross)
#and another one erosion
#img=nd.binary_erosion(img,structure=cross)
#im2g=nd.grey_erosion(im2,structure=cross)
#im2g2=nd.grey_erosion(im2g,structure=cross)
indg2 = np.where(im2 == im2.max())
p1max = indg2[0][0]
p2max = indg2[1][0]
#label objects
imgl = nd.label(img)
# no_labels=imgl[1]
imgl = imgl[0]
#find the biggest objects the second biggest should be the cc the biggest should be the background
"""
find_big=np.zeros(no_labels)
for i in range(no_labels):
ind=np.where(imgl==i)
find_big[i]=len(ind[0])
print find_big
find_bigi=np.argsort(find_big)
"""
cc_label = imgl[p1max, p2max]
imgl2 = np.zeros((ysize, zsize))
#cc is found and copied to a new image here
#imgl2[imgl==int(find_bigi[-2])]=1
imgl2[imgl == int(cc_label)] = 1
imgl2 = imgl2.astype('uint8')
#now do another dilation to recover some cc shape from the previous erosion
imgl2d = nd.binary_dilation(imgl2, structure=cross)
#and another one
#imgl2d=nd.binary_dilation(imgl2d,structure=cross)
imgl2d = imgl2d.astype('uint8')
#get the tracks back
cc_indices = []
indcc = np.where(imgl2d > 0)
for i in range(len(indcc[0])):
p1 = indcc[0][i]
p2 = indcc[1][i]
cc_indices = cc_indices + im_track[(p1, p2)]
print 'After', len(cc_indices)
#export also the rest of the brain
indices = range(len(tracks))
left = set(indices).difference(set(cc_indices))
left_indices = [l for l in left]
#return im,im2,imgl2d,cc_indices,left_indices
return cc_indices, left_indices
def S2_PSF_optimization(self):
self.h, self.v = mtile_cal(self.lat, self.lon)
m = mgrs.MGRS()
#mg_coor = m.toMGRS(self.lat, self.lon, MGRSPrecision=4)
#self.place = self.S2_fname
#self.Hfiles = glob.glob(directory +'l_data/LC8%03d%03d%d*LGN00_sr_band1.tif'%(self.path, self.row, self.year))
if len(self.S2_fname) == 5:
self.Hfile = os.getcwd()+'/s_data/%s/%s/%s/%d/%d/%d/0/'%(self.S2_fname[:2], self.S2_fname[2],\
self.S2_fname[3:5], self.year, self.S2_month, self.S2_day)
else:
self.Hfile = os.getcwd()+'/s_data/%s/%s/%s/%d/%d/%d/0/'%(self.S2_fname[:1], self.S2_fname[1],\
self.S2_fname[2:4], self.year, self.S2_month, self.S2_day)
#Lfile = glob.glob('m_data/MCD43A1.A%d%03d.h%02dv%02d.006.*.hdf'%(year,doy,h,v))[0]
#self.doy = datetime .datetime(self.year, self.month, self.day).timetuple().tm_yday
self.Lfile = glob.glob('m_data/MCD43A1.A%d%03d.h%02dv%02d.006.*.hdf' %
(self.year, self.S2_doy, self.h, self.v))[0]
if glob.glob(self.Hfile + 'cloud.tif') == []:
cl = classification(fhead=self.Hfile,
bands=(2, 3, 4, 8, 11, 12, 13),
bounds=None)
cl.Get_cm_p()
self.cloud = cl.cm.copy()
tifffile.imsave(self.Hfile + 'cloud.tif', self.cloud.astype(int))
self.H_data = np.repeat(np.repeat(cl.b12, 2, axis=1), 2, axis=0)
del cl
else:
b12 = gdal.Open(self.Hfile + 'B12.jp2').ReadAsArray() * 0.0001
self.H_data = np.repeat(np.repeat(b12, 2, axis=1), 2, axis=0)
self.cloud = tifffile.imread(self.Hfile + 'cloud.tif').astype(bool)
cloud_cover = 1. * self.cloud.sum() / self.cloud.size
cloud_cover = 1. * self.cloud.sum() / self.cloud.size
if cloud_cover > 0.2:
print 'Too much cloud, cloud proportion: %.03f !!' % cloud_cover
return []
else:
mete = readxml('%smetadata.xml' % self.Hfile)
self.sza = np.zeros(7)
self.sza[:] = mete['mSz']
self.saa = self.sza.copy()
self.saa[:] = mete['mSa']
try:
self.vza = (mete['mVz'])[[1, 2, 3, 7, 11, 12, 8], ]
self.vaa = (mete['mVa'])[[1, 2, 3, 7, 11, 12, 8], ]
except:
self.vza = np.repeat(np.nanmean(mete['mVz']), 7)
self.vaa = np.repeat(np.nanmean(mete['mVa']), 7)
ll, ul, lr, ur = mg.toWgs(u'%s0000000000'%self.S2_fname), mg.toWgs(u'%s0000099999'%self.S2_fname),\
mg.toWgs(u'%s9999900000'%self.S2_fname), mg.toWgs(u'%s9999999999'%self.S2_fname)
dic = {
'LL_LAT': ll[0],
'LL_LON': ll[1],
'LR_LAT': lr[0],
'LR_LON': lr[1],
'UL_LAT': ul[0],
'UL_LON': ul[1],
'UR_LAT': ur[0],
'UR_LON': ur[1]
}
corners = 10000, 10000
#self.L_inds, self.H_inds = get_coords(self.lat,self.lon)
self.L_inds, self.H_inds = MSL_geo_trans(self.lat, self.lon, dic,
corners)
self.Lx, self.Ly = self.L_inds
self.Hx, self.Hy = self.H_inds
angles = (self.sza[-2], self.vza[-2], (self.vaa - self.saa)[-2])
self.brdf, self.qa = get_brdf_six(self.Lfile,
angles=angles,
bands=(7, ),
Linds=self.L_inds)
self.brdf, self.qa = self.brdf.flatten(), self.qa.flatten()
struct = ndimage.generate_binary_structure(2, 2)
dia_cloud = ndimage.binary_dilation(self.cloud,
structure=struct,
iterations=60).astype(
self.cloud.dtype)
mask = ~(self.H_data <= 0).astype('bool')
small_mask = ndimage.binary_erosion(mask,
structure=struct,
iterations=60).astype(
mask.dtype)
self.val_mask = (~dia_cloud) & small_mask
self.L_data = np.zeros(self.brdf.shape[0])
self.L_data[:] = np.nan
self.L_data[self.qa == 0] = self.brdf[self.qa == 0]
#args = s, self.L_data,
avker = np.ones((120, 120))
navker = avker / avker.sum()
self.s = signal.fftconvolve(self.H_data, navker, mode='same')
self.s[~self.val_mask] = np.nan
min_val = [-100, -100]
max_val = [100, 100]
ps, distributions = create_training_set(['xs', 'ys'],
min_val,
max_val,
n_train=50)
solved = parmap(self.op1, ps, nprocs=10)
paras, costs = np.array([i[0] for i in solved
]), np.array([i[1] for i in solved])
xs, ys = paras[costs == costs.min()][0]
if costs.min() < 0.1:
min_val = [5, 5, -15, xs - 5, ys - 5]
max_val = [100, 100, 15, xs + 5, ys + 5]
self.bounds = [5,
100], [5,
100], [-15,
15], [xs - 5,
xs + 5], [ys - 5, ys + 5]
ps, distributions = create_training_set(
['xstd', 'ystd', 'ang', 'xs', 'ys'],
min_val,
max_val,
n_train=50)
print 'Start solving...'
self.solved = parmap(self.op, ps, nprocs=10)
print self.solved
return self.solved, self.brdf, self.qa
else:
print 'Cost is too large, plese check!', xs, ys, costs.min()
return []
def L8_PSF_optimization(self):
self.h, self.v = mtile_cal(self.lat, self.lon)
#pr=get_wrs(self.lat, self.lon)
#self.path, self.row = pr[0]['path'],pr[0]['row']
#self.Hfiles = glob.glob(directory +'l_data/LC8%03d%03d%d*LGN00_sr_band1.tif'%(self.path, self.row, self.year))
self.Hfile = directory + 'l_data/%s_toa_' % (self.L8_fname)
#Lfile = glob.glob('m_data/MCD43A1.A%d%03d.h%02dv%02d.006.*.hdf'%(year,doy,h,v))[0]
self.Lfile = glob.glob('m_data/MCD43A1.A%d%03d.h%02dv%02d.006.*.hdf' %
(self.year, self.L8_doy, self.h, self.v))[0]
if self.read_meta(self.Hfile, self.path, self.row) == []:
print 'Too much cloud!!'
return []
else:
self.sza, self.saa, self.vza, self.vaa, dic, corners = self.read_meta(
self.Hfile, self.path, self.row)
self.L_inds, self.H_inds = MSL_geo_trans(self.lat, self.lon, dic,
corners)
self.Lx, self.Ly = self.L_inds
self.Hx, self.Hy = self.H_inds
tems = np.zeros((3, 6))
tems[0, :] = self.sza
tems[1, :] = self.vza
tems[2, :] = self.vaa - self.saa
angles = (tems[0][-1], tems[1][-1], tems[2][-1])
self.brdf, self.qa = get_brdf_six(self.Lfile,
angles=angles,
bands=(7, ),
Linds=self.L_inds)
self.brdf, self.qa = self.brdf.flatten(), self.qa.flatten()
cloud = gdal.Open(self.Hfile[:-5] + '_cfmask.tif').ReadAsArray()
cl_mask = cloud == 4 # cloud pixels; strictest way is to set the clear pixels with cloud==0
struct = ndimage.generate_binary_structure(2, 2)
dia_cloud = ndimage.binary_dilation(cl_mask,
structure=struct,
iterations=20).astype(
cl_mask.dtype)
self.H_data = gdal.Open(self.Hfile +
'band%d.tif' % 7).ReadAsArray() * 0.0001
mask = ~(self.H_data < 0).astype('bool')
small_mask = ndimage.binary_erosion(mask,
structure=struct,
iterations=20).astype(
mask.dtype)
self.val_mask = (~dia_cloud) & small_mask
self.L_data = np.zeros(self.brdf.shape[0])
self.L_data[:] = np.nan
self.L_data[self.qa == 0] = self.brdf[self.qa == 0]
#args = s, self.L_data,
avker = np.ones((40, 40))
navker = avker / avker.sum()
self.s = signal.fftconvolve(self.H_data, navker, mode='same')
self.s[~self.val_mask] = np.nan
min_val = [-40, -40]
max_val = [40, 40]
ps, distributions = create_training_set(['xs', 'ys'],
min_val,
max_val,
n_train=50)
solved = parmap(self.op1, ps, nprocs=10)
paras, costs = np.array([i[0] for i in solved
]), np.array([i[1] for i in solved])
xs, ys = paras[costs == costs.min()][0]
if costs.min() < 0.1:
min_val = [5, 5, -15, xs - 5, ys - 5]
max_val = [100, 100, 15, xs + 5, ys + 5]
self.bounds = [5,
100], [5,
100], [-15,
15], [xs - 5,
xs + 5], [ys - 5, ys + 5]
ps, distributions = create_training_set(
['xstd', 'ystd', 'ang', 'xs', 'ys'],
min_val,
max_val,
n_train=50)
print 'Start solving...'
self.solved = parmap(self.op, ps, nprocs=10)
print self.solved
return self.solved, self.brdf, self.qa
else:
print 'Cost is too large, plese check!', xs, ys, costs.min()
return []
return SD
if __name__== "__main__":
img=misc.imread('result.png')
img2=misc.imread('threshold.png')
plt.title('Processed image')
plt.imshow(img)
plt.show()
#plt.title('threshold')
#plt.imshow(img2,cmap=cm.Greys_r)
#plt.show()
dilimg=ndimage.binary_dilation(img2)
for x in range(25):
dilimg=ndimage.binary_dilation(dilimg)
erimg=ndimage.binary_erosion(dilimg)
for x in range(25):
erimg=ndimage.binary_erosion(erimg)
plt.title('Closed image')
plt.imshow(erimg,cmap=cm.Greys_r)
plt.show()
a,A=Area(erimg)
#print(a)
#print(A)
Asymmetry=((a/A)*100)/10
if Asymmetry<0 :
Asymmetry=Asymmetry*(-1)
print('Asymmetry')
print(Asymmetry)
#BORDER
def processMatrix(mtx,dim):
#-------------------#
# LPF #
#-------------------#
original = mtx
# Apply Large Gaussian Filter To Cropped Image
#gmtx = ndimage.gaussian_filter(mtx, (2,2,2), order=0)
gmtx = mtx
gmtx = (gmtx > gmtx.mean())
gmtx = gmtx.astype('uint8')
gmtx = gmtx * 255
print gmtx.shape
#------------------------#
# DENOISING #
#------------------------#
erodim = 4 # erosion dimension
cr = 3 # custom radius for the structured
if dim == 512:
erodim = 4
cr = 3
elif dim == 712:
erodim = 5
cr = 5
gmtx_eroded = ndimage.binary_erosion(gmtx, structure=custom_cross(erodim)).astype(gmtx.dtype)
#gmtx_eroded = ndimage.binary_erosion(gmtx, structure=myball).astype(gmtx.dtype)
gmtx_eroded = gmtx_eroded.astype('uint8')
eroded = gmtx_eroded * 255
#gmtx_eroded = gmtx
#eroded = gmtx_eroded
#---------------------#
# SKIMAGE #
#---------------------#
markers, nummarks = ndimage.label(gmtx_eroded)
bins = np.bincount(markers.flatten())
bins[0] = 0
cwmark = np.argmax(bins)
for zdim in xrange(markers.shape[2]):
for col in xrange(markers.shape[1]):
first = np.argmax(markers[:,col,zdim] == cwmark)
last = markers.shape[1] - 1 - np.argmax(markers[::-1,col,zdim] == cwmark)
markers[0:first,col,zdim] = cwmark
markers[last:,col,zdim] = cwmark
#markers = markers.astype('uint8')
markers[markers == cwmark] = 0 # in markers image, 0 is background and 1 is the largest blob (i.e. chest wall & mediastinum)
markers = markers > 0
markers = markers.astype('uint8')
myelem = custom_square(cr)
opened = ndimage.morphology.binary_opening(markers, myelem)
opened = opened.astype('uint8')
markers, nummarks = ndimage.label(opened)
opened = opened * 255
bins = np.bincount(markers.flatten())
for i in range(1, nummarks+1):
if bins[i] > 10:
com = ndimage.measurements.center_of_mass(markers == i)
print com
tmpimg_orig = np.array(original[:,:,int(com[2])])
tmpimg_open = np.array(opened[:,:,int(com[2])])
cv2.circle(tmpimg_orig,(int(com[1]),int(com[0])),50,[255,255,255],10)
cv2.circle(tmpimg_open,(int(com[1]),int(com[0])),50,[255,255,255],10)
original[:,:,com[2]] = tmpimg_orig
opened[:,:,com[2]] = tmpimg_open
return original, eroded, markers, opened
def canny(image,
sigma=1.,
low_threshold=None,
high_threshold=None,
mask=None,
use_quantiles=False):
pl = Plot("canny_test")
pl.append(image, "defalut")
"""Edge filter an image using the Canny algorithm.
Parameters
-----------
image : 2D array
Greyscale input image to detect edges on; can be of any dtype.
sigma : float
Standard deviation of the Gaussian filter.
low_threshold : float
Lower bound for hysteresis thresholding (linking edges).
If None, low_threshold is set to 10% of dtype's max.
high_threshold : float
Upper bound for hysteresis thresholding (linking edges).
If None, high_threshold is set to 20% of dtype's max.
mask : array, dtype=bool, optional
Mask to limit the application of Canny to a certain area.
use_quantiles : bool, optional
If True then treat low_threshold and high_threshold as quantiles of the
edge magnitude image, rather than absolute edge magnitude values. If True
then the thresholds must be in the range [0, 1].
Returns
-------
output : 2D array (image)
The binary edge map.
See also
--------
skimage.sobel
Notes
-----
The steps of the algorithm are as follows:
* Smooth the image using a Gaussian with ``sigma`` width.
* Apply the horizontal and vertical Sobel operators to get the gradients
within the image. The edge strength is the norm of the gradient.
* Thin potential edges to 1-pixel wide curves. First, find the normal
to the edge at each point. This is done by looking at the
signs and the relative magnitude of the X-Sobel and Y-Sobel
to sort the points into 4 categories: horizontal, vertical,
diagonal and antidiagonal. Then look in the normal and reverse
directions to see if the values in either of those directions are
greater than the point in question. Use interpolation to get a mix of
points instead of picking the one that's the closest to the normal.
* Perform a hysteresis thresholding: first label all points above the
high threshold as edges. Then recursively label any point above the
low threshold that is 8-connected to a labeled point as an edge.
References
-----------
.. [1] Canny, J., A Computational Approach To Edge Detection, IEEE Trans.
Pattern Analysis and Machine Intelligence, 8:679-714, 1986
.. [2] William Green's Canny tutorial
http://dasl.mem.drexel.edu/alumni/bGreen/www.pages.drexel.edu/_weg22/can_tut.html
Examples
--------
>>> from skimage import feature
>>> # Generate noisy image of a square
>>> im = np.zeros((256, 256))
>>> im[64:-64, 64:-64] = 1
>>> im += 0.2 * np.random.rand(*im.shape)
>>> # First trial with the Canny filter, with the default smoothing
>>> edges1 = feature.canny(im)
>>> # Increase the smoothing for better results
>>> edges2 = feature.canny(im, sigma=3)
"""
#
# The steps involved:
#
# * Smooth using the Gaussian with sigma above.
#
# * Apply the horizontal and vertical Sobel operators to get the gradients
# within the image. The edge strength is the sum of the magnitudes
# of the gradients in each direction.
#
# * Find the normal to the edge at each point using the arctangent of the
# ratio of the Y sobel over the X sobel - pragmatically, we can
# look at the signs of X and Y and the relative magnitude of X vs Y
# to sort the points into 4 categories: horizontal, vertical,
# diagonal and antidiagonal.
#
# * Look in the normal and reverse directions to see if the values
# in either of those directions are greater than the point in question.
# Use interpolation to get a mix of points instead of picking the one
# that's the closest to the normal.
#
# * Label all points above the high threshold as edges.
# * Recursively label any point above the low threshold that is 8-connected
# to a labeled point as an edge.
#
# Regarding masks, any point touching a masked point will have a gradient
# that is "infected" by the masked point, so it's enough to erode the
# mask by one and then mask the output. We also mask out the border points
# because who knows what lies beyond the edge of the image?
#
assert_nD(image, 2)
if low_threshold is None:
low_threshold = 0.1 * dtype_limits(image, clip_negative=False)[1]
if high_threshold is None:
high_threshold = 0.2 * dtype_limits(image, clip_negative=False)[1]
if mask is None:
mask = np.ones(image.shape, dtype=bool)
def fsmooth(x):
return gaussian_filter(x, sigma, mode='constant')
smoothed = smooth_with_function_and_mask(image, fsmooth, mask)
jsobel = ndi.sobel(smoothed, axis=1)
isobel = ndi.sobel(smoothed, axis=0)
abs_isobel = np.abs(isobel)
abs_jsobel = np.abs(jsobel)
magnitude = np.hypot(
isobel, jsobel
) # Given the “legs” of a right triangle, return its hypotenuse.
pl.append(abs_isobel, "jsobel")
pl.append(abs_isobel, "isobel")
pl.append(magnitude, "magitude")
#
# Make the eroded mask. Setting the border value to zero will wipe
# out the image edges for us.
#
s = generate_binary_structure(2, 2)
eroded_mask = binary_erosion(mask, s, border_value=0)
eroded_mask = eroded_mask & (magnitude > 0)
#
#--------- Find local maxima --------------
#
# Assign each point to have a normal of 0-45 degrees, 45-90 degrees,
# 90-135 degrees and 135-180 degrees.
#
local_maxima = np.zeros(image.shape, bool)
#----- 0 to 45 degrees ------
pts_plus = (isobel >= 0) & (jsobel >= 0) & (abs_isobel >= abs_jsobel)
pts_minus = (isobel <= 0) & (jsobel <= 0) & (abs_isobel >= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
# Get the magnitudes shifted left to make a matrix of the points to the
# right of pts. Similarly, shift left and down to get the points to the
# top right of pts.
c1 = magnitude[1:, :][pts[:-1, :]]
c2 = magnitude[1:, 1:][pts[:-1, :-1]]
m = magnitude[pts]
w = abs_jsobel[pts] / abs_isobel[pts]
c_plus = c2 * w + c1 * (1 - w) <= m
c1 = magnitude[:-1, :][pts[1:, :]]
c2 = magnitude[:-1, :-1][pts[1:, 1:]]
c_minus = c2 * w + c1 * (1 - w) <= m
local_maxima[pts] = c_plus & c_minus
pl.append(local_maxima, "local_maxima: 0 to 45")
pl.append(pts, "pts")
#----- 45 to 90 degrees ------
# Mix diagonal and vertical
#
pts_plus = (isobel >= 0) & (jsobel >= 0) & (abs_isobel <= abs_jsobel)
pts_minus = (isobel <= 0) & (jsobel <= 0) & (abs_isobel <= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
c1 = magnitude[:, 1:][pts[:, :-1]]
c2 = magnitude[1:, 1:][pts[:-1, :-1]]
m = magnitude[pts]
w = abs_isobel[pts] / abs_jsobel[pts]
c_plus = c2 * w + c1 * (1 - w) <= m
c1 = magnitude[:, :-1][pts[:, 1:]]
c2 = magnitude[:-1, :-1][pts[1:, 1:]]
c_minus = c2 * w + c1 * (1 - w) <= m
local_maxima[pts] = c_plus & c_minus
pl.append(local_maxima, "local_maxima: 45 to 90")
pl.append(pts, "pts")
#----- 90 to 135 degrees ------
# Mix anti-diagonal and vertical
#
pts_plus = (isobel <= 0) & (jsobel >= 0) & (abs_isobel <= abs_jsobel)
pts_minus = (isobel >= 0) & (jsobel <= 0) & (abs_isobel <= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
c1a = magnitude[:, 1:][pts[:, :-1]]
c2a = magnitude[:-1, 1:][pts[1:, :-1]]
m = magnitude[pts]
w = abs_isobel[pts] / abs_jsobel[pts]
c_plus = c2a * w + c1a * (1.0 - w) <= m
c1 = magnitude[:, :-1][pts[:, 1:]]
c2 = magnitude[1:, :-1][pts[:-1, 1:]]
c_minus = c2 * w + c1 * (1.0 - w) <= m
local_maxima[pts] = c_plus & c_minus
pl.append(local_maxima, "local_maxima: 90 to 135")
pl.append(pts, "pts")
#----- 135 to 180 degrees ------
# Mix anti-diagonal and anti-horizontal
#
pts_plus = (isobel <= 0) & (jsobel >= 0) & (abs_isobel >= abs_jsobel)
pts_minus = (isobel >= 0) & (jsobel <= 0) & (abs_isobel >= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
c1 = magnitude[:-1, :][pts[1:, :]]
c2 = magnitude[:-1, 1:][pts[1:, :-1]]
m = magnitude[pts]
w = abs_jsobel[pts] / abs_isobel[pts]
c_plus = c2 * w + c1 * (1 - w) <= m
c1 = magnitude[1:, :][pts[:-1, :]]
c2 = magnitude[1:, :-1][pts[:-1, 1:]]
c_minus = c2 * w + c1 * (1 - w) <= m
local_maxima[pts] = c_plus & c_minus
pl.append(local_maxima, "local_maxima: 135-180")
pl.append(pts, "pts")
#
#---- If use_quantiles is set then calculate the thresholds to use
#
if use_quantiles:
if high_threshold > 1.0 or low_threshold > 1.0:
raise ValueError("Quantile thresholds must not be > 1.0")
if high_threshold < 0.0 or low_threshold < 0.0:
raise ValueError("Quantile thresholds must not be < 0.0")
high_threshold = np.percentile(magnitude, 100.0 * high_threshold)
low_threshold = np.percentile(magnitude, 100.0 * low_threshold)
#
#---- Create two masks at the two thresholds.
#
high_mask = local_maxima & (magnitude >= high_threshold)
low_mask = local_maxima & (magnitude >= low_threshold)
pl.append(high_mask, "high_mask")
pl.append(low_mask, "low_max")
#
# Segment the low-mask, then only keep low-segments that have
# some high_mask component in them
#
strel = np.ones((3, 3), bool)
labels, count = label(low_mask, strel)
if count == 0:
return low_mask
sums = (np.array(ndi.sum(high_mask, labels,
np.arange(count, dtype=np.int32) + 1),
copy=False,
ndmin=1))
good_label = np.zeros((count + 1, ), bool)
good_label[1:] = sums > 0
output_mask = good_label[labels]
pl.append(output_mask, "output")
pl.show()
return output_mask
mask_predicted = mask_predicted.detach().cpu().numpy()[0, :, :, :]
mask_split = split_nuclei(mask_predicted > 0.5, minimal_nuclei_size, h,
sphere, min_dist)
mask_label_dilated = balloon(mask_split, sphere)
factor = np.array(original_img_size) / np.array(mask_label_dilated.shape)
mask_final = zoom(mask_label_dilated, factor, order=0)
mask_erroded = np.zeros(mask.shape, dtype=bool)
for nuclei_value in range(1, 5):
mask_current = mask == nuclei_value
mask_current = binary_erosion(binary_closing(mask_current, sphere),
sphere)
mask_erroded[mask_current] = True
mask_erroded = remove_small_objects(mask_erroded, minimal_nuclei_size)
mask = balloon(mask_erroded, sphere)
factor = np.array(original_img_size) / np.array(mask.shape)
mask = zoom(mask, factor, order=0)
plt.imshow(
np.concatenate((np.max(mask_final, axis=2), np.max(mask, axis=2)),
axis=1))
plt.show()
im = ndimage.gaussian_filter(im, sigma=l / (4. * n))
mask = (im > im.mean()).astype(np.float)
img = mask + 0.3 * np.random.randn(*mask.shape)
binary_img = img > 0.5
## oping and closing
# Remove small white regions
open_img = ndimage.binary_opening(binary_img)
# Remove small black hole
close_img = ndimage.binary_closing(open_img)
## errosion and propgation
eroded_img = ndimage.binary_erosion(binary_img)
reconstruct_img = ndimage.binary_propagation(eroded_img, mask=binary_img)
tmp = np.logical_not(reconstruct_img)
eroded_tmp = ndimage.binary_erosion(tmp)
reconstruct_final = np.logical_not(
ndimage.binary_propagation(eroded_tmp, mask=tmp))
print(np.abs(mask - close_img).mean())
print(np.abs(mask - reconstruct_final).mean())
plt.figure(figsize=(12, 3))
l = 128
def morphological_geodesic_active_contour(gimage,
num_iter,
init_level_set='disk',
smoothing=1,
threshold='auto',
balloon=0,
iter_callback=lambda x: None):
"""Morphological Geodesic Active Contours (MorphGAC).
Geodesic active contours implemented with morphological operators. It can
be used to segment objects with visible but noisy, cluttered, broken
borders.
Parameters
----------
gimage : (M, N) or (L, M, N) array
Preprocessed image or volume to be segmented. This is very rarely the
original image. Instead, this is usually a preprocessed version of the
original image that enhances and highlights the borders (or other
structures) of the object to segment.
`morphological_geodesic_active_contour` will try to stop the contour
evolution in areas where `gimage` is small. See
`morphsnakes.inverse_gaussian_gradient` as an example function to
perform this preprocessing. Note that the quality of
`morphological_geodesic_active_contour` might greatly depend on this
preprocessing.
num_iter : uint
Number of num_iter to run.
init_level_set : str, (M, N) array, or (L, M, N) array
Initial level set. If an array is given, it will be binarized and used
as the initial level set. If a string is given, it defines the method
to generate a reasonable initial level set with the shape of the
`image`. Accepted values are 'checkerboard' and 'disk'. See the
documentation of `checkerboard_level_set` and `disk_level_set`
respectively for details about how these level sets are created.
smoothing : uint, optional
Number of times the smoothing operator is applied per iteration.
Reasonable values are around 1-4. Larger values lead to smoother
segmentations.
threshold : float, optional
Areas of the image with a value smaller than this threshold will be
considered borders. The evolution of the contour will stop in this
areas.
balloon : float, optional
Balloon force to guide the contour in non-informative areas of the
image, i.e., areas where the gradient of the image is too small to push
the contour towards a border. A negative value will shrink the contour,
while a positive value will expand the contour in these areas. Setting
this to zero will disable the balloon force.
iter_callback : function, optional
If given, this function is called once per iteration with the current
level set as the only argument. This is useful for debugging or for
plotting intermediate results during the evolution.
Returns
-------
out : (M, N) or (L, M, N) array
Final segmentation (i.e., the final level set)
See Also
--------
inverse_gaussian_gradient, disk_level_set, checkerboard_level_set
Notes
-----
This is a version of the Geodesic Active Contours (GAC) algorithm that uses
morphological operators instead of solving partial differential equations
(PDEs) for the evolution of the contour. The set of morphological operators
used in this algorithm are proved to be infinitesimally equivalent to the
GAC PDEs (see [1]_). However, morphological operators are do not suffer
from the numerical stability issues typically found in PDEs (e.g., it is
not necessary to find the right time step for the evolution), and are
computationally faster.
The algorithm and its theoretical derivation are described in [1]_.
References
----------
.. [1] A Morphological Approach to Curvature-based Evolution of Curves and
Surfaces, Pablo Márquez-Neila, Luis Baumela, Luis Álvarez. In IEEE
Transactions on Pattern Analysis and Machine Intelligence (PAMI),
2014, :DOI:`10.1109/TPAMI.2013.106`
"""
image = gimage
init_level_set = _init_level_set(init_level_set, image.shape)
_check_input(image, init_level_set)
if threshold == 'auto':
threshold = np.percentile(image, 40)
structure = np.ones((3, ) * len(image.shape), dtype=np.int8)
dimage = np.gradient(image)
# threshold_mask = image > threshold
if balloon != 0:
threshold_mask_balloon = image > threshold / np.abs(balloon)
u = np.int8(init_level_set > 0)
iter_callback(u)
for _ in range(num_iter):
# Balloon
if balloon > 0:
aux = ndi.binary_dilation(u, structure)
elif balloon < 0:
aux = ndi.binary_erosion(u, structure)
if balloon != 0:
u[threshold_mask_balloon] = aux[threshold_mask_balloon]
# Image attachment
aux = np.zeros_like(image)
du = np.gradient(u)
for el1, el2 in zip(dimage, du):
aux += el1 * el2
u[aux > 0] = 1
u[aux < 0] = 0
# Smoothing
for _ in range(smoothing):
u = _curvop(u)
iter_callback(u)
return u
im = np.transpose(im, [2, 0, 1])
return im
for _i in range(len(seg_list)):
img_name = image_list[_i]
seg_name = seg_list[_i]
seg = np.array(Image.open(seg_name), dtype=np.float32)
seg = cv2.resize(seg, (256, 256))
seg = (seg - 127.5) / 127.5
seg = np.transpose(seg, [2, 0, 1])
seg = 0.5 * seg + 0.5
seg = (seg[0, :, :] > 0.999999).astype(dtype=np.int)
seg = ndimage.binary_erosion(seg, structure=np.ones(
(2, 2))).astype(dtype=np.float32)
seg = seg[np.newaxis, :, :]
img = np.array(Image.open(img_name), dtype=np.float32)[:, :, :3]
img = cv2.resize(img, (256, 256))
img = (img / 255.0)**2.2
img = 2 * img - 1
img = np.transpose(img, [2, 0, 1])
seg = torch.from_numpy(seg).cuda().unsqueeze(0)
image_s = torch.from_numpy(img).cuda().unsqueeze(0) * seg
light_s = torch.zeros(seg.size(0), 3).float().cuda().clamp(0, 1)
if angle == 0:
light_t = gen_sliding_lights()
def get_edge_image(data):
inside = np.empty_like(data)
for z in range(data.shape[0]):
inside[z] = ndimage.binary_erosion(data[z]).astype(data.dtype)
return data - inside
def run_geometrics(config_file, ref_path=None, test_path=None, output_path=None,
align=True, allow_test_ignore=False, save_aligned=False, save_plots=None):
# check inputs
if not os.path.isfile(config_file):
raise IOError("Configuration file does not exist")
if output_path is not None and not os.path.isdir(output_path):
raise IOError('"output_path" not a valid folder <{}>'.format(output_path))
# parse configuration
config_path = os.path.dirname(config_file)
config = geo.parse_config(config_file,
refpath=(ref_path or config_path),
testpath=(test_path or config_path))
# Get test model information from configuration file.
test_dsm_filename = config['INPUT.TEST']['DSMFilename']
test_dtm_filename = config['INPUT.TEST'].get('DTMFilename', None)
test_cls_filename = config['INPUT.TEST']['CLSFilename']
test_conf_filename = config['INPUT.TEST'].get('CONFFilename', None)
test_mtl_filename = config['INPUT.TEST'].get('MTLFilename', None)
# Get reference model information from configuration file.
ref_dsm_filename = config['INPUT.REF']['DSMFilename']
ref_dtm_filename = config['INPUT.REF']['DTMFilename']
ref_cls_filename = config['INPUT.REF']['CLSFilename']
ref_mtl_filename = config['INPUT.REF'].get('MTLFilename', None)
# Get material label names and list of material labels to ignore in evaluation.
material_names = config['MATERIALS.REF']['MaterialNames']
material_indices_to_ignore = config['MATERIALS.REF']['MaterialIndicesToIgnore']
# Get image pair files
performer_pair_file = config['INPUT.TEST'].get('ImagePairFilename', None)
performer_pair_data_file = config['INPUT.TEST'].get('ImagePairDataFilename', None)
performer_files_chosen_file = config['INPUT.TEST'].get('FilesChosenFilename', None)
# Get plot settings from configuration file
PLOTS_SHOW = config['PLOTS']['ShowPlots']
PLOTS_SAVE = config['PLOTS']['SavePlots']
if save_plots is not None: # Commandline line argument overrided config file setting
PLOTS_SAVE = save_plots
PLOTS_ENABLE = PLOTS_SHOW or PLOTS_SAVE
# default output path
if output_path is None:
output_path = os.path.dirname(test_dsm_filename)
if align:
align = config['OPTIONS']['AlignModel']
save_aligned = config['OPTIONS']['SaveAligned'] | save_aligned
# Determine multiprocessing usage
use_multiprocessing = config['OPTIONS']['UseMultiprocessing']
# Configure plotting
basename = os.path.basename(test_dsm_filename)
if PLOTS_ENABLE:
plot = geo.plot(saveDir=output_path, autoSave=PLOTS_SAVE, savePrefix=basename + '_', badColor='black', showPlots=PLOTS_SHOW, dpi=900)
else:
plot = None
# copy testDSM to the output path
# this is a workaround for the "align3d" function with currently always
# saves new files to the same path as the testDSM
src = test_dsm_filename
dst = os.path.join(output_path, os.path.basename(src))
if not os.path.isfile(dst): shutil.copyfile(src, dst)
test_dsm_filename_copy = dst
# Register test model to ground truth reference model.
if not align:
print('\nSKIPPING REGISTRATION')
xyz_offset = (0.0, 0.0, 0.0)
else:
print('\n=====REGISTRATION====='); sys.stdout.flush()
try:
align3d_path = config['REGEXEPATH']['Align3DPath']
except:
align3d_path = None
xyz_offset = geo.align3d(ref_dsm_filename, test_dsm_filename_copy, exec_path=align3d_path)
print(xyz_offset)
#xyz_offset = geo.align3d_python(ref_dsm_filename, test_dsm_filename_copy)
# Explicitly assign a no data value to warped images to track filled pixels
no_data_value = -9999
# Read reference model files.
print("\nReading reference model files...")
ref_cls, tform = geo.imageLoad(ref_cls_filename)
ref_dsm = geo.imageWarp(ref_dsm_filename, ref_cls_filename, noDataValue=no_data_value)
ref_dtm = geo.imageWarp(ref_dtm_filename, ref_cls_filename, noDataValue=no_data_value)
# Validate shape of reference files
if ref_cls.shape != ref_dsm.shape or ref_cls.shape != ref_dtm.shape:
print("Need to rescale")
if ref_mtl_filename:
ref_mtl = geo.imageWarp(ref_mtl_filename, ref_cls_filename, interp_method=gdalconst.GRA_NearestNeighbour).astype(np.uint8)
if save_aligned:
geo.arrayToGeotiff(ref_mtl, os.path.join(output_path, basename + '_ref_mtl_reg_out'), ref_cls_filename, no_data_value)
else:
ref_mtl = None
print('NO REFERENCE MTL')
# Read test model files and apply XYZ offsets.
print("\nReading test model files...")
test_cls = geo.imageWarp(test_cls_filename, ref_cls_filename, xyz_offset, gdalconst.GRA_NearestNeighbour)
test_dsm = geo.imageWarp(test_dsm_filename, ref_cls_filename, xyz_offset, noDataValue=no_data_value)
if test_dtm_filename:
test_dtm = geo.imageWarp(test_dtm_filename, ref_cls_filename, xyz_offset, noDataValue=no_data_value)
if save_aligned:
geo.arrayToGeotiff(test_dtm, os.path.join(output_path, basename + '_test_dtm_reg_out'), ref_cls_filename,
no_data_value)
else:
print('NO TEST DTM: defaults to reference DTM')
test_dtm = ref_dtm
if test_conf_filename:
test_conf = geo.imageWarp(test_conf_filename, ref_cls_filename, xyz_offset, noDataValue=no_data_value)
conf_viz_path = Path(str(Path(test_conf_filename).parent.absolute()),
Path(test_conf_filename).stem + '_VIZ.tif')
test_conf_viz = geo.imageWarpRGB(str(conf_viz_path.absolute()), ref_cls_filename, xyz_offset)
geo.arrayToGeotiffRGB(test_conf_viz, os.path.join(output_path, 'CONF_VIZ_aligned'), ref_cls_filename,
no_data_value)
geo.arrayToGeotiff(test_conf, os.path.join(output_path, 'CONF_aligned'), ref_cls_filename,
no_data_value)
else:
test_conf = None
print("NO TEST CONF")
if save_aligned:
geo.arrayToGeotiff(test_cls, os.path.join(output_path, basename + '_test_cls_reg_out'), ref_cls_filename,
no_data_value)
geo.arrayToGeotiff(test_dsm, os.path.join(output_path, basename + '_test_dsm_reg_out'), ref_cls_filename,
no_data_value)
geo.arrayToGeotiff(ref_cls, os.path.join(output_path, basename + '_ref_cls_reg_out'), ref_cls_filename,
no_data_value)
geo.arrayToGeotiff(ref_dsm, os.path.join(output_path, basename + '_ref_dsm_reg_out'), ref_cls_filename,
no_data_value)
geo.arrayToGeotiff(ref_dtm, os.path.join(output_path, basename + '_ref_dtm_reg_out'), ref_cls_filename,
no_data_value)
if test_mtl_filename:
test_mtl = geo.imageWarp(test_mtl_filename, ref_cls_filename, xyz_offset,
gdalconst.GRA_NearestNeighbour).astype(np.uint8)
if save_aligned:
geo.arrayToGeotiff(test_mtl, os.path.join(output_path, basename + '_test_mtl_reg_out'), ref_cls_filename,
no_data_value)
else:
print('NO TEST MTL')
print("\n\n")
# Apply registration offset, only to valid data to allow better tracking of bad data
print("Applying offset of Z: %f" % (xyz_offset[2]))
test_valid_data = (test_dsm != no_data_value)
if test_dtm_filename:
test_valid_data &= (test_dtm != no_data_value)
test_dsm[test_valid_data] = test_dsm[test_valid_data] + xyz_offset[2]
if test_dtm_filename:
test_dtm[test_valid_data] = test_dtm[test_valid_data] + xyz_offset[2]
# Create mask for ignoring points labeled NoData in reference files.
ref_dsm_no_data_value = no_data_value
ref_dtm_no_data_value = no_data_value
ref_cls_no_data_value = geo.getNoDataValue(ref_cls_filename)
if ref_cls_no_data_value != 65:
print("WARNING! NODATA TAG IN CLS FILE IS LIKELY INCORRECT. IT SHOULD BE 65.")
ref_cls_no_data_value = 65
ignore_mask = np.zeros_like(ref_cls, np.bool)
# Get reference and test classifications
ref_cls_match_sets, test_cls_match_sets = geo.getMatchValueSets(config['INPUT.REF']['CLSMatchValue'],
config['INPUT.TEST']['CLSMatchValue'],
np.unique(ref_cls).tolist(),
np.unique(test_cls).tolist())
# Add ignore mask on boundaries of cls
# Ignore edges
ignore_edges = False
if ignore_edges is True:
print("Applying ignore mask to edges of buildings...")
for index, (ref_match_value, test_match_value) in enumerate(zip(ref_cls_match_sets, test_cls_match_sets)):
import scipy.ndimage as ndimage
ref_mask = np.zeros_like(ref_cls, np.bool)
for v in ref_match_value:
ref_mask[ref_cls == v] = True
strel = ndimage.generate_binary_structure(2, 2)
dilated_cls = ndimage.binary_dilation(ref_mask, structure=strel, iterations=3)
eroded_cls = ndimage.binary_erosion(ref_mask, structure=strel, iterations=3)
dilation_mask = np.bitwise_xor(ref_mask, dilated_cls)
erosion_mask = np.bitwise_xor(ref_mask, eroded_cls)
ref_cls[dilation_mask == True] = ref_cls_no_data_value
ref_cls[erosion_mask == True] = ref_cls_no_data_value
print("Finished applying ignore mask to edges of buildings...")
# Create ignore mask
if ref_dsm_no_data_value is not None:
ignore_mask[ref_dsm == ref_dsm_no_data_value] = True
if ref_dtm_no_data_value is not None:
ignore_mask[ref_dtm == ref_dtm_no_data_value] = True
if ref_cls_no_data_value is not None:
ignore_mask[ref_cls == ref_cls_no_data_value] = True
# optionally ignore test NoDataValue(s)
if allow_test_ignore:
if allow_test_ignore == 1:
test_cls_no_data_value = geo.getNoDataValue(test_cls_filename)
if test_cls_no_data_value is not None:
print('Ignoring test CLS NoDataValue')
ignore_mask[test_cls == test_cls_no_data_value] = True
elif allow_test_ignore == 2:
test_dsm_no_data_value = no_data_value
test_dtm_no_data_value = no_data_value
if test_dsm_no_data_value is not None:
print('Ignoring test DSM NoDataValue')
ignore_mask[test_dsm == test_dsm_no_data_value] = True
if test_dtm_filename and test_dtm_no_data_value is not None:
print('Ignoring test DTM NoDataValue')
ignore_mask[test_dtm == test_dtm_no_data_value] = True
else:
raise IOError('Unrecognized test ignore value={}'.format(allow_test_ignore))
print("")
# sanity check
if np.all(ignore_mask):
raise ValueError('All pixels are ignored')
##### COMMENT HERE FOR TESTING METICS IMAGES #####
# report "data voids"
num_data_voids = np.sum(ignore_mask > 0)
print('Number of data voids in ignore mask = ', num_data_voids)
# If quantizing to voxels, then match vertical spacing to horizontal spacing.
QUANTIZE = config['OPTIONS']['QuantizeHeight']
if QUANTIZE:
unit_hgt = geo.getUnitHeight(tform)
ref_dsm = np.round(ref_dsm / unit_hgt) * unit_hgt
ref_dtm = np.round(ref_dtm / unit_hgt) * unit_hgt
test_dsm = np.round(test_dsm / unit_hgt) * unit_hgt
test_dtm = np.round(test_dtm / unit_hgt) * unit_hgt
no_data_value = np.round(no_data_value / unit_hgt) * unit_hgt
if PLOTS_ENABLE:
# Make image pair plots
plot.make_image_pair_plots(performer_pair_data_file, performer_pair_file, performer_files_chosen_file, 201,
saveName="image_pair_plot")
# Reference models can include data voids, so ignore invalid data on display
plot.make(ref_dsm, 'Reference DSM', 111, colorbar=True, saveName="input_refDSM", badValue=no_data_value)
plot.make(ref_dtm, 'Reference DTM', 112, colorbar=True, saveName="input_refDTM", badValue=no_data_value)
plot.make(ref_cls, 'Reference Classification', 113, colorbar=True, saveName="input_refClass")
# Test models shouldn't have any invalid data
# so display the invalid values to highlight them,
# unlike with the refSDM/refDTM
plot.make(test_dsm, 'Test DSM', 151, colorbar=True, saveName="input_testDSM")
plot.make(test_dtm, 'Test DTM', 152, colorbar=True, saveName="input_testDTM")
plot.make(test_cls, 'Test Classification', 153, colorbar=True, saveName="input_testClass")
plot.make(ignore_mask, 'Ignore Mask', 181, saveName="input_ignoreMask")
# material maps
if ref_mtl_filename and test_mtl_filename:
plot.make(ref_mtl, 'Reference Materials', 191, colorbar=True, saveName="input_refMTL", vmin=0, vmax=13)
plot.make(test_mtl, 'Test Materials', 192, colorbar=True, saveName="input_testMTL", vmin=0, vmax=13)
# Run the threshold geometry metrics and report results.
metrics = dict()
# Run threshold geometry and relative accuracy
threshold_geometry_results = []
relative_accuracy_results = []
objectwise_results = []
if PLOTS_ENABLE:
# Update plot prefix include counter to be unique for each set of CLS value evaluated
original_save_prefix = plot.savePrefix
# Loop through sets of CLS match values
for index, (ref_match_value,test_match_value) in enumerate(zip(ref_cls_match_sets, test_cls_match_sets)):
print("Evaluating CLS values")
print(" Reference match values: " + str(ref_match_value))
print(" Test match values: " + str(test_match_value))
# object masks based on CLSMatchValue(s)
ref_mask = np.zeros_like(ref_cls, np.bool)
for v in ref_match_value:
ref_mask[ref_cls == v] = True
test_mask = np.zeros_like(test_cls, np.bool)
if len(test_match_value):
for v in test_match_value:
test_mask[test_cls == v] = True
if PLOTS_ENABLE:
plot.savePrefix = original_save_prefix + "%03d" % index + "_"
plot.make(test_mask.astype(np.int), 'Test Evaluation Mask', 154, saveName="input_testMask")
plot.make(ref_mask.astype(np.int), 'Reference Evaluation Mask', 114, saveName="input_refMask")
if config['OBJECTWISE']['Enable']:
print("\nRunning objectwise metrics...")
merge_radius = config['OBJECTWISE']['MergeRadius']
[result, test_ndx, ref_ndx] = geo.run_objectwise_metrics(ref_dsm, ref_dtm, ref_mask, test_dsm, test_dtm,
test_mask, tform, ignore_mask, merge_radius,
plot=plot, geotiff_filename=ref_dsm_filename,
use_multiprocessing=use_multiprocessing)
# Get UTM coordinates from pixel coordinates in building centroids
print("Creating KML and CSVs...")
import gdal, osr, simplekml, csv
kml = simplekml.Kml()
ds = gdal.Open(ref_dsm_filename)
# get CRS from dataset
crs = osr.SpatialReference()
crs.ImportFromWkt(ds.GetProjectionRef())
# create lat/long crs with WGS84 datum
crsGeo = osr.SpatialReference()
crsGeo.ImportFromEPSG(4326) # 4326 is the EPSG id of lat/long crs
t = osr.CoordinateTransformation(crs, crsGeo)
# Use CORE3D objectwise
current_class = test_match_value[0]
with open(Path(output_path, "objectwise_numbers_class_" + str(current_class) + ".csv"), mode='w') as \
objectwise_csv:
objectwise_writer = csv.writer(objectwise_csv, delimiter=',', quotechar='"',
quoting=csv.QUOTE_MINIMAL)
objectwise_writer.writerow(
['Index', 'iou_2d', 'iou_3d', 'hrmse', 'zrmse', 'x_coord', 'y_coord', 'geo_x_coord',
'geo_y_coord', 'long', 'lat'])
for current_object in result['objects']:
test_index = current_object['test_objects'][0]
iou_2d = current_object['threshold_geometry']['2D']['jaccardIndex']
iou_3d = current_object['threshold_geometry']['3D']['jaccardIndex']
hrmse = current_object['relative_accuracy']['hrmse']
zrmse = current_object['relative_accuracy']['zrmse']
x_coords, y_coords = np.where(test_ndx == test_index)
x_coord = np.average(x_coords)
y_coord = np.average(y_coords)
geo_x_coord = tform[0] + y_coord * tform[1] + x_coord * tform[2]
geo_y_coord = tform[3] + y_coord * tform[4] + x_coord * tform[5]
(lat, long, z) = t.TransformPoint(geo_x_coord, geo_y_coord)
objectwise_writer.writerow([test_index, iou_2d, iou_3d, hrmse, zrmse, x_coord, y_coord,
geo_x_coord, geo_y_coord, long, lat])
pnt = kml.newpoint(name="Building Index: " + str(test_index),
description="2D IOU: " + str(iou_2d) + ' 3D IOU: ' + str(iou_3d) + ' HRMSE: '
+ str(hrmse) + ' ZRMSE: ' + str(zrmse),
coords=[(lat, long)])
kml.save(Path(output_path, "objectwise_ious_class_" + str(current_class) + ".kml"))
# Use FFDA objectwise
with open(Path(output_path, "objectwise_numbers_no_morphology_class_" + str(current_class) + ".csv"),
mode='w') as objectwise_csv:
objectwise_writer = csv.writer(objectwise_csv, delimiter=',', quotechar='"',
quoting=csv.QUOTE_MINIMAL)
objectwise_writer.writerow(['iou', 'x_coord', 'y_coord', 'geo_x_coord',
'geo_y_coord', 'long', 'lat'])
for i in result['metrics_container_no_merge'].iou_per_gt_building.keys():
iou = result['metrics_container_no_merge'].iou_per_gt_building[i][0]
x_coord = result['metrics_container_no_merge'].iou_per_gt_building[i][1][0]
y_coord = result['metrics_container_no_merge'].iou_per_gt_building[i][1][1]
geo_x_coord = tform[0] + y_coord * tform[1] + x_coord * tform[2]
geo_y_coord = tform[3] + y_coord * tform[4] + x_coord * tform[5]
(lat, long, z) = t.TransformPoint(geo_x_coord, geo_y_coord)
objectwise_writer.writerow([iou, x_coord, y_coord, geo_x_coord, geo_y_coord, long, lat])
pnt = kml.newpoint(name="Building Index: " + str(i), description=str(iou), coords=[(lat, long)])
kml.save(Path(output_path, "objectwise_ious_no_morphology_class_" + str(current_class) + ".kml"))
# Result
if ref_match_value == test_match_value:
result['CLSValue'] = ref_match_value
else:
result['CLSValue'] = {'Ref': ref_match_value, "Test": test_match_value}
# Delete non-json dumpable metrics
del result['metrics_container_no_merge'], result['metrics_container_merge_fp'], result[
'metrics_container_merge_fn']
objectwise_results.append(result)
# Save index files to compute objectwise metrics
obj_save_prefix = basename + "_%03d" % index + "_"
geo.arrayToGeotiff(test_ndx, os.path.join(output_path, obj_save_prefix + '_test_ndx_objs'),
ref_cls_filename, no_data_value)
geo.arrayToGeotiff(ref_ndx, os.path.join(output_path, obj_save_prefix + '_ref_ndx_objs'),
ref_cls_filename,
no_data_value)
# Evaluate threshold geometry metrics using refDTM as the testDTM to mitigate effects of terrain modeling
# uncertainty
result, _, stoplight_fn, errhgt_fn = geo.run_threshold_geometry_metrics(ref_dsm, ref_dtm, ref_mask, test_dsm, test_dtm, test_mask, tform,
ignore_mask, testCONF=test_conf, plot=plot)
if ref_match_value == test_match_value:
result['CLSValue'] = ref_match_value
else:
result['CLSValue'] = {'Ref': ref_match_value, "Test": test_match_value}
threshold_geometry_results.append(result)
# Run the relative accuracy metrics and report results.
# Skip relative accuracy is all of testMask or refMask is assigned as "object"
if not ((ref_mask.size == np.count_nonzero(ref_mask)) or (test_mask.size == np.count_nonzero(test_mask))) and len(test_match_value) != 0:
try:
result = geo.run_relative_accuracy_metrics(ref_dsm, test_dsm, ref_mask, test_mask, ignore_mask,
geo.getUnitWidth(tform), plot=plot)
if ref_match_value == test_match_value:
result['CLSValue'] = ref_match_value
else:
result['CLSValue'] = {'Ref': ref_match_value, "Test": test_match_value}
relative_accuracy_results.append(result)
except Exception as e:
print(str(e))
if PLOTS_ENABLE:
# Reset plot prefix
plot.savePrefix = original_save_prefix
metrics['threshold_geometry'] = threshold_geometry_results
metrics['relative_accuracy'] = relative_accuracy_results
metrics['objectwise'] = objectwise_results
if align:
metrics['registration_offset'] = xyz_offset
metrics['geolocation_error'] = np.linalg.norm(xyz_offset)
# Run the terrain model metrics and report results.
if test_dtm_filename:
dtm_z_threshold = config['OPTIONS'].get('TerrainZErrorThreshold', 1)
# Make reference mask for terrain evaluation that identified elevated object where underlying terrain estimate
# is expected to be inaccurate
dtm_cls_ignore_values = config['INPUT.REF'].get('TerrainCLSIgnoreValues', [6, 17]) # Default to building and bridge deck
dtm_cls_ignore_values = geo.validateMatchValues(dtm_cls_ignore_values,np.unique(ref_cls).tolist())
ref_mask_terrain_acc = np.zeros_like(ref_cls, np.bool)
for v in dtm_cls_ignore_values:
ref_mask_terrain_acc[ref_cls == v] = True
metrics['terrain_accuracy'] = geo.run_terrain_accuracy_metrics(ref_dtm, test_dtm, ref_mask_terrain_acc,
dtm_z_threshold, plot=plot)
else:
print('WARNING: No test DTM file, skipping terrain accuracy metrics')
# Run the threshold material metrics and report results.
if test_mtl_filename and ref_mtl:
metrics['threshold_materials'] = geo.run_material_metrics(ref_ndx, ref_mtl, test_mtl, material_names,
material_indices_to_ignore, plot=plot)
else:
print('WARNING: No test MTL file or no reference material, skipping material metrics')
fileout = os.path.join(output_path, os.path.basename(config_file) + "_metrics.json")
with open(fileout, 'w') as fid:
json.dump(metrics, fid, indent=2)
print(json.dumps(metrics, indent=2))
print("Metrics report: " + fileout)
# If displaying figures, wait for user before exiting
if PLOTS_SHOW:
input("Press Enter to continue...")
# Write final metrics out
output_folder = os.path.join(output_path, "metrics_final")
try:
os.mkdir(output_folder)
except OSError as e:
if e.errno == errno.EEXIST:
pass
else:
print("Can't create directory, please check permissions...")
raise
# Run Roof slope metrics
# Roof Slope Metrics
try:
from core3dmetrics.geometrics.ang import calculate_metrics as calculate_roof_metrics
except:
from ang import calculate_metrics as calculate_roof_metrics
IOUC, IOUZ, IOUAGL, IOUMZ, orderRMS = calculate_roof_metrics(ref_dsm, ref_dtm, ref_cls, test_dsm, test_dtm,
test_cls, tform, kernel_radius=3, output_path=output_path)
files = [str(Path(output_path, filename).absolute()) for filename in os.listdir(output_path) if
filename.startswith("Roof")]
# Save all of myrons outputs here
metrics_formatted = {}
metrics_formatted["2D"] = {}
metrics_formatted["2D"]["Precision"] = metrics["threshold_geometry"][0]['2D']['precision']
metrics_formatted["2D"]["Recall"] = metrics["threshold_geometry"][0]['2D']['recall']
metrics_formatted["2D"]["IOU"] = metrics["threshold_geometry"][0]['2D']['jaccardIndex']
metrics_formatted["3D"] = {}
metrics_formatted["3D"]["Precision"] = metrics["threshold_geometry"][0]['3D']['precision']
metrics_formatted["3D"]["Recall"] = metrics["threshold_geometry"][0]['3D']['recall']
metrics_formatted["3D"]["IOU"] = metrics["threshold_geometry"][0]['3D']['jaccardIndex']
metrics_formatted["ZRMS"] = metrics['relative_accuracy'][0]['zrmse']
metrics_formatted["HRMS"] = metrics['relative_accuracy'][0]['hrmse']
metrics_formatted["Slope RMS"] = orderRMS
metrics_formatted["DTM RMS"] = metrics['terrain_accuracy']['zrmse']
metrics_formatted["DTM Completeness"] = metrics['terrain_accuracy']['completeness']
metrics_formatted["Z IOU"] = IOUZ
metrics_formatted["AGL IOU"] = IOUAGL
metrics_formatted["MODEL IOU"] = IOUMZ
metrics_formatted["X Offset"] = xyz_offset[0]
metrics_formatted["Y Offset"] = xyz_offset[1]
metrics_formatted["Z Offset"] = xyz_offset[2]
metrics_formatted["P Value"] = metrics['threshold_geometry'][0]['pearson']
fileout = os.path.join(output_folder, "metrics.json")
with open(fileout, 'w') as fid:
json.dump(metrics_formatted, fid, indent=2)
print(json.dumps(metrics_formatted, indent=2))
# metrics.png
if PLOTS_ENABLE:
cls_iou_fn = [filename for filename in files if filename.endswith("CLS_IOU.tif")][0]
cls_z_iou_fn = [filename for filename in files if filename.endswith("CLS_Z_IOU.tif")][0]
cls_z_slope_fn = [filename for filename in files if filename.endswith("CLS_Z_SLOPE_IOU.tif")][0]
if test_conf_filename:
plot.make_final_metrics_images(stoplight_fn, errhgt_fn, Path(os.path.join(output_path, 'CONF_VIZ_aligned.tif')),
cls_iou_fn, cls_z_iou_fn, cls_z_slope_fn, ref_cls, output_folder)
# inputs.png
plot.make_final_input_images_grayscale(ref_cls, ref_dsm, ref_dtm, test_cls,
test_dsm, test_dtm, output_folder)
# textured.png
if config['BLENDER.TEST']['OBJDirectoryFilename']:
try:
from CORE3D_Perspective_Imagery import generate_blender_images
objpath = config['BLENDER.TEST']['OBJDirectoryFilename']
gsd = config['BLENDER.TEST']['GSD']
Zup = config['BLENDER.TEST']['+Z']
N = config['BLENDER.TEST']['OrbitalLocations']
e = config['BLENDER.TEST']['ElevationAngle']
f = config['BLENDER.TEST']['FocalLength']
r = config['BLENDER.TEST']['RadialDistance']
output_location = generate_blender_images(objpath, gsd, Zup, N, e, f, r, output_path)
files = [str(Path(output_path, filename).absolute()) for filename in os.listdir(output_path) if
filename.startswith("persp_image")]
files.append(files[0])
# Make metrics image
plot.make_final_input_images_rgb(files, output_folder)
print("Done")
except:
print("Could not render Blender images...")
else:
pass
def seg_erode(seg_d,
iterations=1,
background_idx=1,
structure=None,
min_vox_count=5,
seg_null_value=0,
VERBOSE=False):
"""
Binary erosion (or dilation) of integer type segmentation data (np.array) with options
If iterations < 0, performs binary dilation
:param seg_d: np.array of segmentation, integers
:param iterations: number of erosion iterations, if negative, provides the number of dilations (in this case, min_vox_count not used)
:param background_idx: value for background index, currently ignored (TODO: remove)
:param structure: binary structure for erosion from scipy.ndimage (ndimage.morphology.generate_binary_structure(3,1))
:param min_vox_count: minimun number of voxels to allow to be in a segmentation, if less, does not erode
:param seg_null_value: value to set as null for binary erosion step (i.e., a value NOT in your segmentation index)
:param VERBOSE: spit out loads of text to stdout, because you can.
:return: seg_shrunk_d eroded (or dilated) version of segmentation
"""
import scipy.ndimage as ndi
import numpy as np
if iterations >= 0:
pos_iter = True
else:
iterations = iterations * -1
pos_iter = False
if structure is None:
structure = ndi.morphology.generate_binary_structure(3, 1)
if seg_null_value == 0:
seg_shrunk_d = np.zeros_like(seg_d)
temp_d = np.zeros_like(seg_d)
else:
seg_shrunk_d = np.ones_like(seg_d) * seg_null_value
temp_d = np.ones_like(seg_d) * seg_null_value
seg_idxs = np.unique(seg_d)
if seg_null_value in seg_idxs:
print("Shit, your null value is also an index. This will not work.")
print(
"Set it to a suitably strange value that is not already an index. {0,999}"
)
return None
if VERBOSE:
print("Indices:")
for seg_idx in seg_idxs:
if VERBOSE:
print(seg_idx),
if (background_idx is not None) and (background_idx == seg_idx):
seg_shrunk_d[
seg_d ==
seg_idx] = seg_idx # just set the value to the bckgrnd value, and be done with it
if VERBOSE:
print("[bckg]"),
else:
temp_d[seg_d == seg_idx] = 1
for idx in range(
0, iterations
): # messy, does not exit the loop when already gone too far. but it still works
if pos_iter:
temp_temp_d = ndi.binary_erosion(temp_d,
iterations=1,
structure=structure)
else:
temp_temp_d = ndi.binary_dilation(temp_d,
iterations=1,
structure=structure)
if np.sum(temp_temp_d) >= min_vox_count:
temp_d = temp_temp_d
if VERBOSE:
print("[y]"),
else:
if VERBOSE:
print("[no]"),
seg_shrunk_d[temp_d == 1] = seg_idx
temp_d[:, :, :] = seg_null_value
if VERBOSE:
print(seg_idx)
if VERBOSE:
print("")
return seg_shrunk_d
def vis_forward(self, x):
# x.shape: [N, C, H, W] (?, 1, 32, 32)
x = x * 0.5 + 0.5
if x.shape[1] == 3:
x = x[:,0:1,:,:] * 0.299 + x[:,1:2,:,:] * 0.587 + x[:,2:3,:,:] * 0.114
# simulate https://github.com/scikit-image/scikit-image/blob/master/skimage/feature/_canny.py: canny()
# L175-L180
bleed_over = self.gaussian(self.mask)
x = self.gaussian(x)
x = x / (bleed_over + 1e-12)
vis1 = x.clone().detach()
# debug_gaussian = x.data.clone()
jsobel = self.sobel(x, axis=1)
isobel = self.sobel(x, axis=0)
# print(1, torch.max(jsobel))
# print(2, torch.min(jsobel))
abs_isobel = torch.abs(isobel)
abs_jsobel = torch.abs(jsobel)
magnitude2 = isobel ** 2 + jsobel ** 2
magnitude = torch.sqrt(magnitude2 + self.eps)
# magnitude = selfTF(self.thres, magnitude)
vis2 = magnitude.clone().detach()
# L186-L188
#
# Make the eroded mask. Setting the border value to zero will wipe
# out the image edges for us.
#
# assert x.shape[0] == 1
s = generate_binary_structure(2, 2)
mask = self.mask.detach().cpu().numpy()[0, 0] # mask.shape: [32, 32]
eroded_mask = binary_erosion(mask, s, border_value=0)
eroded_mask = eroded_mask & (magnitude2.detach().cpu().numpy()[0, 0] > 0) # replace magnitude by magnitude2
eroded_mask = torch.ByteTensor(eroded_mask.astype(np.uint8)).to(x.device)
# L195-L212
#
# --------- Find local maxima --------------
#
local_maxima = torch.zeros(x.shape).byte().to(x.device)
# ----- 0 to 45 degrees ------
pts_plus = (isobel >= 0) & (jsobel >= 0) & (abs_isobel >= abs_jsobel)
pts_minus = (isobel <= 0) & (jsobel <= 0) & (abs_isobel >= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
c1 = magnitude[:, :, 1:, :][pts[:, :, :-1, :]]
c2 = magnitude[:, :, 1:, 1:][pts[:, :, :-1, :-1]]
m = magnitude[pts]
w = abs_jsobel[pts] / (abs_isobel[pts] + self.eps)
c_plus = c2 * w + c1 * (1 - w) <= m
s_0_45_1 = F.relu(-m + self.gamma + (c2 * w + c1 * (1 - w)))
c1 = magnitude[:, :, :-1, :][pts[:, :, 1:, :]]
c2 = magnitude[:, :, :-1, :-1][pts[:, :, 1:, 1:]]
c_minus = c2 * w + c1 * (1 - w) <= m
s_0_45_2 = F.relu(-m + self.gamma + (c2 * w + c1 * (1 - w)))
s_0_45 = torch.max(s_0_45_1, s_0_45_2)
local_maxima[pts] = c_plus & c_minus
# L216-L228
# ----- 45 to 90 degrees ------
# Mix diagonal and vertical
#
pts_plus = (isobel >= 0) & (jsobel >= 0) & (abs_isobel <= abs_jsobel)
pts_minus = (isobel <= 0) & (jsobel <= 0) & (abs_isobel <= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
c1 = magnitude[:, :, :, 1:][pts[:, :, :, :-1]]
c2 = magnitude[:, :, 1:, 1:][pts[:, :, :-1, :-1]]
m = magnitude[pts]
w = abs_isobel[pts] / abs_jsobel[pts]
c_plus = c2 * w + c1 * (1 - w) <= m
s_45_90_1 = F.relu(-m + self.gamma + (c2 * w + c1 * (1 - w)))
c1 = magnitude[:, :, :, :-1][pts[:, :, :, 1:]]
c2 = magnitude[:, :, :-1, :-1][pts[:, :, 1:, 1:]]
c_minus = c2 * w + c1 * (1 - w) <= m
s_45_90_2 = F.relu(-m + self.gamma + (c2 * w + c1 * (1 - w)))
s_45_90 = torch.max(s_45_90_1, s_45_90_2)
local_maxima[pts] = c_plus & c_minus
# L232-L244
# ----- 90 to 135 degrees ------
# Mix anti-diagonal and vertical
#
pts_plus = (isobel <= 0) & (jsobel >= 0) & (abs_isobel <= abs_jsobel)
pts_minus = (isobel >= 0) & (jsobel <= 0) & (abs_isobel <= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
c1a = magnitude[:, :, :, 1:][pts[:, :, :, :-1]]
c2a = magnitude[:, :, :-1, 1:][pts[:, :, 1:, :-1]]
m = magnitude[pts]
w = abs_isobel[pts] / abs_jsobel[pts]
c_plus = c2a * w + c1a * (1.0 - w) <= m
s_90_135_1 = F.relu(-m + self.gamma + (c2a * w + c1a * (1.0 - w)))
c1 = magnitude[:, :, :, :-1][pts[:, :, :, 1:]]
c2 = magnitude[:, :, 1:, :-1][pts[:, :, :-1, 1:]]
c_minus = c2 * w + c1 * (1.0 - w) <= m
s_90_135_2 = F.relu(-m + self.gamma + (c2a * w + c1a * (1.0 - w)))
s_90_135 = torch.max(s_90_135_1, s_90_135_2)
local_maxima[pts] = c_plus & c_minus
# L248-L260
# ----- 135 to 180 degrees ------
# Mix anti-diagonal and anti-horizontal
#
pts_plus = (isobel <= 0) & (jsobel >= 0) & (abs_isobel >= abs_jsobel)
pts_minus = (isobel >= 0) & (jsobel <= 0) & (abs_isobel >= abs_jsobel)
pts = pts_plus | pts_minus
pts = eroded_mask & pts
c1 = magnitude[:, :, :-1, :][pts[:, :, 1:, :]]
c2 = magnitude[:, :, :-1, 1:][pts[:, :, 1:, :-1]]
m = magnitude[pts]
w = abs_jsobel[pts] / abs_isobel[pts]
c_plus = c2 * w + c1 * (1 - w) <= m
s_135_180_1 = F.relu(-m + self.gamma + (c2 * w + c1 * (1 - w)))
c1 = magnitude[:, :, 1:, :][pts[:, :, :-1, :]]
c2 = magnitude[:, :, 1:, :-1][pts[:, :, :-1, 1:]]
c_minus = c2 * w + c1 * (1 - w) <= m
s_135_180_2 = F.relu(-m + self.gamma + (c2 * w + c1 * (1 - w)))
s_135_180 = torch.max(s_135_180_1, s_135_180_2)
local_maxima[pts] = c_plus & c_minus
# Final part
# local_maxima_np = (local_maxima.data.clone().cpu().numpy() == 1)[0][0]
# magnitude_np = magnitude.data.clone().cpu().numpy()[0][0]
local_maxima_np = (local_maxima.data.clone().cpu().numpy() == 1)
magnitude_np = magnitude.data.clone().cpu().numpy()
high_mask = local_maxima_np & (magnitude_np >= self.high_threshold)
low_mask = local_maxima_np & (magnitude_np >= self.low_threshold)
vis3 = high_mask.copy()
vis4 = low_mask.copy()
strel = np.ones((3, 3), bool)
mask_final_list = []
for i in range(x.shape[0]):
labels, count = label(low_mask[i][0], strel)
if count == 0:
mask_final = low_mask[i][0]
else:
sums = (np.array(ndi.sum(high_mask[i][0], labels,
np.arange(count, dtype=np.int32) + 1),
copy=False, ndmin=1))
good_label = np.zeros((count + 1,), bool)
good_label[1:] = sums > 0
output_mask = good_label[labels]
mask_final = output_mask
mask_final_list.append([mask_final])
mask_final = np.concatenate((mask_final_list), 0)
mask_final = np.reshape(mask_final.astype(np.float32),(x.shape[0], 1, 32, 32))
# magnitude = magnitude * torch.FloatTensor(mask_final).cuda()
magnitude = torch.FloatTensor(mask_final).cuda() + magnitude - magnitude.detach()
test = magnitude[magnitude != 0]
# magnitude = magnitude / magnitude.max().item()
# if magnitude.max().item() == 0:
# print('yes')
magnitude = (magnitude - 0.5) / 0.5
# return s_0_45, s_45_90, s_90_135, s_135_180, local_maxima, test, magnitude
return magnitude, vis1, vis2, vis3, vis4
def binary_closing(bImg, iterations=1):
bImg = ndimage.binary_dilation(bImg, iterations=iterations)
bImg = ndimage.binary_erosion(bImg, iterations=iterations)
return bImg
def padAnalysis(self):
#Define the Top Threshold and Average top surface
#self.ModArr = self.interpNaN(self.ModArr*-1)
ZV = np.array(self.ModArr).reshape(np.array(self.ModArr).size).tolist()
mask = ~np.isnan(ZV)
if len(np.array(self.XV)[mask]) < 307200:
ZV = PRF_Algo().interpNaN(
np.array(self.XV)[mask],
np.array(self.YV)[mask],
np.array(ZV)[mask], self.XVx, self.YVx)
self.ModArr = np.array(ZV).reshape(np.array(ZV).size).tolist()
self.ModArr = np.array(self.ModArr) * -1 #Used to invert the data
self.ModArr.shape = (len(self.Y_Array), len(self.X_Array))
TempTop = self.ModArr
TopHist = np.histogram(self.ModArr, bins=800)
yhat_x = np.array(TopHist[1]).reshape(np.array(
TopHist[1]).size).tolist()
yhat = PRF_Algo().savitzky_golay(
np.array(
np.array(TopHist[0]).reshape(np.array(
TopHist[0]).size).tolist()).astype('float'), 25, 6)
MaximaListBins = np.array(yhat)[argrelextrema(np.array(yhat),
np.greater,
order=1)[0]]
MaximaListHeight = np.array(yhat_x)[argrelextrema(np.array(yhat),
np.greater,
order=1)[0]]
MaximaVal = float(
np.array(MaximaListHeight).reshape(
np.array(MaximaListHeight).size).tolist()[
np.array(MaximaListBins).reshape(
np.array(MaximaListBins).size).tolist().index(
np.max(MaximaListBins))])
MinimaListBins = np.array(yhat)[argrelextrema(np.array(yhat),
np.less,
order=20)[0]]
MinimaListHeight = np.array(yhat_x)[argrelextrema(np.array(yhat),
np.less,
order=20)[0]]
MinimaListHeight1 = np.array(MinimaListHeight).reshape(
np.array(MinimaListHeight).size).tolist()
MinimaListHeight1.reverse()
FoundMin = False
NewThresh = 0.
for CutoffMinima in MinimaListHeight1:
if float(CutoffMinima) <= float(
MaximaVal) and FoundMin == False and float(
CutoffMinima) < 100:
FoundMin = True
NewThresh = float(CutoffMinima)
NewThreshHt = MinimaListHeight1[
MinimaListHeight1.index(CutoffMinima) + 1]
## print NewThresh
TopHeight = self.SortAndFill(self.ModArr, NewThresh, np.nan, 'LE')
Heightmask = ~np.isnan(TopHeight)
AvgTopHt = np.average(TopHeight[Heightmask])
XV1, YV1 = np.meshgrid(self.X_Array, self.Y_Array)
XV3, YV3 = np.meshgrid(self.X_Array, self.Y_Array)
TempTest = self.SortAndFill(self.ModArr, NewThresh, 0, 'GE')
TempTest = self.SortAndFill(TempTest, 0, 255, 'L')
#use blob detection to find the via locations
Blob = blob_dog(TempTest,
min_sigma=10,
max_sigma=150.,
exclude_border=True)
Blob[:, 2] = Blob[:, 2] * np.sqrt(2)
#y, x, r = Blob
#Find the via closest to the center of FOV.
Img_X_Cent = 320
Img_Y_Cent = 240
Near_BlobX = 0
Near_BlobY = 0
OVal = 0
Near_R = 0
Offset_Cent = np.sqrt(np.square(Img_X_Cent) + np.square(Img_X_Cent))
for CentBlob in Blob:
Offset = np.sqrt(
np.square(Img_X_Cent - CentBlob[1]) +
np.square(Img_Y_Cent - CentBlob[0]))
Off_Dif = np.abs(Offset_Cent - Offset)
if float(Off_Dif) >= float(OVal) and CentBlob[2] > (5 *
np.sqrt(2)):
OVal = Off_Dif
Near_BlobX = CentBlob[1]
Near_BlobY = CentBlob[0]
Near_R = CentBlob[2]
## #Closest to the center of FOV.
## centerblob = [(Near_BlobX*self.Meas_Pix) , (Near_BlobY*self.Meas_Pix) ]
#Get indices for bounding mask (L=leftEdge, R=rightEdge, T=topEdge, B=bottomEdge)
R = int((Near_BlobX + 2) + (np.round(Near_R) + 10))
L = int((Near_BlobX - 2) - (np.round(Near_R) + 10))
T = int((Near_BlobY + 2) + (np.round(Near_R) + 10))
B = int((Near_BlobY - 2) - (np.round(Near_R) + 10))
#create a temp array filled with zero, add selected data and binarize it.
Segmented = np.zeros(shape=(480, 640))
Segmented[B:T, L:R] = self.ModArr[B:T, L:R]
Segmented = self.SortAndFill(Segmented, NewThresh, 0, 'G')
Segmented = self.SortAndFill(Segmented, 0, 255, 'L')
#Use edge detection
Edge = canny(Segmented, sigma=9, low_threshold=1)
mask = ~np.isnan(Edge)
XV1 = np.array(XV1[Edge])
YV1 = np.array(YV1[Edge])
#LMS fit of top via data
self.topCircle = PRF_Algo().leastsq_circle(XV1, YV1)
self.topDiam = self.topCircle[9]
## print("Circle Fit Data: ", self.topCircle)
print("Top Diameter: ", self.topCircle[9])
#Prep via bottom for analysis
TempBot = np.empty(shape=(480, 640))
TempBot[:] = np.nan
TempBot[B:T, L:R] = self.ModArr[B:T, L:R]
TempBot = self.SortAndFill(TempBot, NewThreshHt, np.nan, 'G')
BotMask = ~np.isnan(TempBot)
BotHist = np.histogram(TempBot[BotMask], bins=800)
#A histogram is used to find the frequency distribution. The signal is noisy so a smoothing algorithm is used to find transitions.
yhat_x = np.array(BotHist[1]).reshape(np.array(
BotHist[1]).size).tolist()
yhat = PRF_Algo().savitzky_golay(
np.array(
np.array(BotHist[0]).reshape(np.array(
BotHist[0]).size).tolist()).astype('float'), 25,
6) # window size 51, polynomial order 3
MaximaListBins = np.array(yhat)[argrelextrema(np.array(yhat),
np.greater,
order=6)[0]]
MaximaListHeight = np.array(yhat_x)[argrelextrema(np.array(yhat),
np.greater,
order=6)[0]]
MaximaVal = float(
np.array(MaximaListHeight).reshape(
np.array(MaximaListHeight).size).tolist()[
np.array(MaximaListBins).reshape(
np.array(MaximaListBins).size).tolist().index(
np.max(MaximaListBins))])
MinimaListBins = np.array(yhat)[argrelextrema(
np.array(yhat), np.less, order=8)[0]] #Order was 12 and 8
MinimaListHeight = np.array(yhat_x)[argrelextrema(np.array(yhat),
np.less,
order=8)[0]]
maxMid = np.max(
MaximaListBins
) * 0.5 #This uses 50% of the max bin height as a threshold
FoundMin = False
NewThreshHt = NewThreshHt
CntLst = 0
CntLstVal = 0
for CutoffMinima in MinimaListHeight:
CntLst = CntLst + 1
MinimaBinVal = float(
np.array(MinimaListBins).reshape(
np.array(MinimaListBins).size).tolist()[np.array(
MinimaListHeight).reshape(
np.array(MinimaListHeight).size).tolist().index(
CutoffMinima)])
if float(CutoffMinima) >= float(
MaximaVal) and FoundMin == False and MinimaBinVal < maxMid:
FoundMin = True
NewThreshHt = float(CutoffMinima)
MinimaBinVal = float(
np.array(MinimaListBins).reshape(
np.array(MinimaListBins).size).tolist()
[np.array(MinimaListHeight).reshape(
np.array(MinimaListHeight).size).tolist().index(
CutoffMinima)])
CntLstVal = CntLst
Segmented = np.zeros(shape=(480, 640))
Segmented[B:T, L:R] = self.ModArr[B:T, L:R]
BotHeight = self.SortAndFill(Segmented, NewThreshHt, np.nan, 'G')
Heightmask = ~np.isnan(BotHeight)
AvgBotHt = np.average(BotHeight[Heightmask])
## print "Avg Bot Ht: " + str(AvgBotHt)
## print "Via Depth: " + str(AvgTopHt - AvgBotHt)
self.viaDepth = AvgTopHt - AvgBotHt
Segmented = self.SortAndFill(Segmented, NewThreshHt, 0, 'G')
Segmented = self.SortAndFill(Segmented, 0, 255, 'L')
tmpSigma = .25
fillComplete = False
while fillComplete == False:
test = canny(Segmented, sigma=tmpSigma)
test = ndimage.binary_closing(test, iterations=5)
test = ndimage.binary_fill_holes(test)
test = ndimage.binary_erosion(test, iterations=5)
#This logic is used to make sure that the via bottom is filled so false data isn't used.
if test[int(Near_BlobY)][int(Near_BlobX)] != 0:
Edge = canny(test)
mask = ~np.isnan(Edge)
XA1 = np.array(XV3[Edge])
YA1 = np.array(YV3[Edge])
try:
self.botCircle = PRF_Algo().leastsq_circle(XA1, YA1)
self.botDiam = self.botCircle[9]
print("Bottom Diameter: ", self.botCircle[9])
fillComplete = True
except:
10 / 0 #Force fail for now
if np.count_nonzero(Edge == True) < 150:
Edge = canny(Segmented, sigma=2, low_threshold=30)
else:
tmpSigma = tmpSigma + 0.25
if tmpSigma >= 5: #needed or will be in infinate loop!!!
fillComplete = True
self.Offset = np.sqrt(
np.square(float(self.topCircle[0]) - float(self.botCircle[0])) +
np.square(float(self.topCircle[1]) - float(self.botCircle[1])))
PlaneDicom = numpy.zeros(ConstPixelDims, dtype=RefDs.pixel_array.dtype)
# loop through all the DICOM files
for filenameDCM in lstFilesDCM:
# read the file
ds = dicom.read_file(filenameDCM)
# store the raw image data
PlaneDicom[:, :, lstFilesDCM.index(filenameDCM)] = ds.pixel_array
print('Processing Slices')
fiducials = []
for i in range(ConstPixelDims[2]):
thirdcoords = i*ConstPixelSpacing[2]*(ConstPixelDims[0]*ConstPixelSpacing[0])/(ConstPixelSpacing[2]*ConstPixelDims[2])
img = PlaneDicom[:,:,i] > 10000
img = ndimage.binary_erosion(img)
coords = feature.corner_peaks(feature.corner_harris(img), min_distance=7)
coords = numpy.array(coords)
if coords.size == 0:
continue
elif len(coords) == 1:
fiducials.append([coords[0][0]*ConstPixelSpacing[0], coords[0][1]*ConstPixelSpacing[0], thirdcoords])
continue
else:
thresh = 40
clusters = hcluster.fclusterdata(coords, thresh, criterion="distance")
j = 1
while j <= clusters.max():
c1 = coords[clusters == j , 0].mean()
c2 = coords[clusters == j , 1].mean()
def find(im, sigma=None, thresh=2, centroid=None, fwhm=2, **kwargs):
"""Find sources in an image.
Generally designed for point-ish sources.
Parameters
----------
im : array
The image to search.
sigma : float, optional
The 1-sigma uncertainty in the background, or `None` to estimate
the uncertainty with the sigma-clipped mean and standard
deviation of `meanclip`. If provided, then the image should be
background subtracted.
thresh : float, optional
The detection threshold in sigma. If a pixel is detected above
`sigma * thresh`, it is an initial source candidate.
centroid : function, optional
The centroiding function, or `None` to use `gcentroid`. The
function is passed a subsection of the image. All other
parameters are provided via `kwargs`.
fwhm : int, optional
A rough estimate of the FWHM of a source, used for binary
morphology operations.
**kwargs
Any keyword arguments for `centroid`.
Returns
-------
cat : ndarray
A catalog of `(y, x)` source positions.
f : ndarray
An array of approximate source fluxes (a background estimate is
removed if `sigma` is `None`).
"""
import scipy.ndimage as nd
from ..util import meanclip
assert isinstance(fwhm, int), 'FWHM must be integer'
_im = im.copy()
if sigma is None:
stats = meanclip(_im, full_output=True)[:2]
_im -= stats[0]
sigma = stats[1]
if centroid is None:
centroid = gcentroid
det = _im > thresh * sigma
det = nd.binary_erosion(det, iterations=fwhm) # remove small objects
det = nd.binary_dilation(det,
iterations=fwhm * 2 + 1) # grow aperture size
label, n = nd.label(det)
yx = []
f = []
bad = 0
for i in nd.find_objects(label):
star = _im[i]
if not np.isfinite(star.sum()):
bad += 1
continue
try:
cen = centroid(star, **kwargs)
except:
bad += 1
continue
if any(np.array(cen) < -0.5):
bad += 1
continue
if any((cen[0] >= star.shape[0] - 0.5, cen[1] >= star.shape[1] - 0.5)):
bad += 1
continue
cen += np.array((i[0].start, i[1].start))
if not any(np.isfinite(cen)):
bad += 1
continue
yx.append(cen)
f.append(star.sum())
print('[find] {} good, {} bad sources'.format(len(yx), bad))
return np.array(yx), np.array(f)
skiprows=0,
names=[
name,
],
parse_dates=True,
infer_datetime_format=True).squeeze()
# ----------------------------------------------------------------------------
## Improve ICE MARGINS mask prior to generating any statistics
# Erode the mask in order to remove dark pixels along the ice sheet margins
# binary_erosion does not work with nans, so convert them to zeros
mtmp = np.where(np.isnan(onset.mask.values), 0, 1)
# Do the erosion
mask_erode = ndimage.binary_erosion(mtmp, iterations=10)
# Convert zeros back to nans
mask_erode = np.where(mask_erode == 0, np.nan, 1)
# Calculate the difference
mask_erode_diff = np.where(np.isnan(onset.mask), 0, 1) + np.where(
np.isnan(mask_erode), 0, 1)
## ---------------------------------------------------------------------------
## Dark ice masks
# First create the 600 m masks, 1 per year
masks_annual_dark = onset.dark_dur \
.where((onset.dark_dur > min_dark_days) & (mask_erode == 1)) \
.notnull()
# Need to load in a MAR XY layer to get coordinates, the MAR ice mask will do
def fit_island(self, isl, opts, img, ngmax=None, ffimg=None, ini_gausfit=None):
"""Fit island with a set of 2D gaussians.
Parameters:
isl: island
opts: Opts structure of the image
beam: beam parameters which are used as an initial guess for
gaussian shape
Returns:
Function returns 2 lists with parameters of good and flagged
gaussians. Gaussian parameters are updated to be image-relative.
Note: "fitok" indicates whether fit converged
and one or more flagged Gaussians indicate
that significant residuals remain (peak > thr).
"""
from _cbdsm import MGFunction
import functions as func
from const import fwsig
if ffimg == None:
fit_image = isl.image-isl.islmean
else:
fit_image = isl.image-isl.islmean-ffimg
fcn = MGFunction(fit_image, isl.mask_active, 1)
# For fitting, use img.beam instead of img.pixel_beam, as we want
# to pick up the wavelet beam (img.pixel_beam is not changed for
# wavelet images, but img.beam is)
beam = N.array(img.beam2pix(img.beam))
beam = (beam[0]/fwsig, beam[1]/fwsig, beam[2]+90.0) # change angle from +y-axis to +x-axis and FWHM to sigma
if abs(beam[0]/beam[1]) < 1.1:
beam = (1.1*beam[0], beam[1], beam[2])
thr1 = isl.mean + opts.thresh_isl*isl.rms
thr2 = isl.mean + img.thresh_pix*isl.rms
thr0 = thr1
verbose = opts.verbose_fitting
g3_only = opts.fix_to_beam
peak = fcn.find_peak()[0]
dof = isl.size_active
shape = isl.shape
isl_image = isl.image - isl.islmean
size = isl.size_active/img.pixel_beamarea()*2.0
gaul = []
iter = 0
ng1 = 0
if ini_gausfit == None:
ini_gausfit = opts.ini_gausfit
if ini_gausfit not in ['default', 'simple', 'nobeam']:
ini_gausfit = 'default'
if ini_gausfit == 'simple' and ngmax == None:
ngmax = 25
if ini_gausfit == 'default' or opts.fix_to_beam:
gaul, ng1, ngmax = self.inigaus_fbdsm(isl, thr0, beam, img)
if ini_gausfit == 'nobeam' and not opts.fix_to_beam:
gaul = self.inigaus_nobeam(isl, thr0, beam, img)
ng1 = len(gaul); ngmax = ng1+2
while iter < 5:
iter += 1
fitok = self.fit_iter(gaul, ng1, fcn, dof, beam, thr0, iter, ini_gausfit, ngmax, verbose, g3_only)
gaul, fgaul = self.flag_gaussians(fcn.parameters, opts,
beam, thr0, peak, shape, isl.mask_active,
isl.image, size)
ng1 = len(gaul)
if fitok and len(fgaul) == 0:
break
if (not fitok or len(gaul) == 0) and ini_gausfit != 'simple':
# If fits using default or nobeam methods did not work,
# try using simple instead
gaul = []
iter = 0
ng1 = 0
ngmax = 25
while iter < 5:
iter += 1
fitok = self.fit_iter(gaul, ng1, fcn, dof, beam, thr0, iter, 'simple', ngmax, verbose, g3_only)
gaul, fgaul = self.flag_gaussians(fcn.parameters, opts,
beam, thr0, peak, shape, isl.mask_active,
isl.image, size)
ng1 = len(gaul)
if fitok and len(fgaul) == 0:
break
sm_isl = nd.binary_dilation(isl.mask_active)
if (not fitok or len(gaul) == 0) and N.sum(~sm_isl) >= img.minpix_isl:
# If fitting still fails, shrink the island a little and try again
fcn = MGFunction(fit_image, nd.binary_dilation(isl.mask_active), 1)
gaul = []
iter = 0
ng1 = 0
ngmax = 25
while iter < 5:
iter += 1
fitok = self.fit_iter(gaul, ng1, fcn, dof, beam, thr0, iter, 'simple', ngmax, verbose, g3_only)
gaul, fgaul = self.flag_gaussians(fcn.parameters, opts,
beam, thr0, peak, shape, isl.mask_active,
isl.image, size)
ng1 = len(gaul)
if fitok and len(fgaul) == 0:
break
lg_isl = nd.binary_erosion(isl.mask_active)
if (not fitok or len(gaul) == 0) and N.sum(~lg_isl) >= img.minpix_isl:
# If fitting still fails, expand the island a little and try again
fcn = MGFunction(fit_image, nd.binary_erosion(isl.mask_active), 1)
gaul = []
iter = 0
ng1 = 0
ngmax = 25
while iter < 5:
iter += 1
fitok = self.fit_iter(gaul, ng1, fcn, dof, beam, thr0, iter, 'simple', ngmax, verbose, g3_only)
gaul, fgaul = self.flag_gaussians(fcn.parameters, opts,
beam, thr0, peak, shape, isl.mask_active,
isl.image, size)
ng1 = len(gaul)
if fitok and len(fgaul) == 0:
break
if not fitok or len(gaul) == 0:
# If all else fails, try to use moment analysis
inisl = N.where(~isl.mask_active)
mask_id = N.zeros(isl.image.shape, dtype=N.int32) - 1
mask_id[inisl] = isl.island_id
try:
pixel_beamarea = img.pixel_beamarea()
mompara = func.momanalmask_gaus(fit_image, mask_id, isl.island_id, pixel_beamarea, True)
mompara[5] += 90.0
if not N.isnan(mompara[1]) and not N.isnan(mompara[2]):
x1 = N.int(N.floor(mompara[1]))
y1 = N.int(N.floor(mompara[2]))
xind = slice(x1, x1+2, 1); yind = slice(y1, y1+2, 1)
t=(mompara[1]-x1)/(x1+1-x1)
u=(mompara[2]-y1)/(y1+1-y1)
s_peak=(1.0-t)*(1.0-u)*fit_image[x1,y1]+t*(1.0-u)*fit_image[x1+1,y1]+ \
t*u*fit_image[x1+1,y1+1]+(1.0-t)*u*fit_image[x1,y1+1]
mompara[0] = s_peak
par = [mompara.tolist()]
par[3] /= fwsig
par[4] /= fwsig
gaul, fgaul = self.flag_gaussians(par, opts,
beam, thr0, peak, shape, isl.mask_active,
isl.image, size)
except:
pass
### return whatever we got
isl.mg_fcn = fcn
gaul = [self.fixup_gaussian(isl, g) for g in gaul]
fgaul = [(flag, self.fixup_gaussian(isl, g))
for flag, g in fgaul]
if verbose:
print 'Number of good Gaussians: %i' % (len(gaul),)
print 'Number of flagged Gaussians: %i' % (len(fgaul),)
return gaul, fgaul
for index_1, value_1 in enumerate(values_1): if counts_1[index_1] < planeAreaThreshold or value_1 == 360: continue mask_1 = valueMaps[0] == value_1 values_2, counts_2 = np.unique(valueMaps[1][mask_1], return_counts=True) for index_2, value_2 in enumerate(values_2): if counts_2[index_2] < planeAreaThreshold or value_2 == 360: continue mask_2 = mask_1 * (valueMaps[1] == value_2) values_3, counts_3 = np.unique(valueMaps[2][mask_2], return_counts=True) for index_3, value_3 in enumerate(values_3): if counts_3[index_3] < planeAreaThreshold or value_3 == 360: continue mask_3 = mask_2 * (valueMaps[2] == value_3) mask_3 = ndimage.binary_erosion(mask_3).astype(mask_3.dtype) if mask_3.sum() < planeAreaThreshold: continue # regionX = X[mask_3] # regionY = Y[mask_3] # regionZ = Y[mask_3] normal = np.array([normals[:, :, 0][mask_3].mean(), normals[:, :, 1][mask_3].mean(), normals[:, :, 2][mask_3].mean()]) normal /= np.linalg.norm(normal, 2) dPlane = (-(normal[0] * X + normal[1] * Y + normal[2] * Z))[mask_3].mean() globalMask += mask_3 segmentations.append(mask_3) azimuth = np.arctan2(-normal[1], normal[0]) altitude = np.arctan2(np.sign(-normal[1]) * np.linalg.norm(normal[:2]), normal[2])
def shapeawewm(mask,sigma):
mask = mask.astype('float')
wc = balancewm(mask)
binimage=(mask==1).astype('float')
diststeps=10000
cells,cellscount = ndimage.measurements.label(binimage)
chull = np.zeros_like(mask)
# convex hull of each object
for ci in range(1,cellscount+1):
I = (cells==ci).astype('float')
R = convex_hull_image(I) - I
R = ndimage.binary_opening(R,structure=np.ones((3,3))).astype('float')
R = ndimage.binary_dilation(R,structure=np.ones((3,3))).astype('float')
chull += R
# distance transform to object skeleton
skcells=thin(binimage)
dtcells=ndimage.distance_transform_edt(skcells!=1)
border=binimage-ndimage.binary_erosion(input=(binimage),structure=np.ones((3,3)),iterations=1).astype('float')
tau=np.max(dtcells[border==1])+0.1
dtcells=np.abs(1-dtcells*border/tau)*border
# distance transform to convex hull skeleton
skchull=thin(chull)
dtchull=ndimage.distance_transform_edt(skchull!=1)
border=chull-ndimage.binary_erosion(input=(chull),structure=np.ones((3,3)),iterations=1).astype('float')
dtchull=np.abs(1-dtchull*border/tau)*border
# maximum border
saw=np.concatenate((dtcells[:,:,np.newaxis],dtchull[:,:,np.newaxis]),2)
saw = np.max(saw,2)
saw /= np.max(saw)
# propagate contour values inside the objects
prop=binimage+chull
prop[prop>1]=1
prop=ndimage.binary_erosion(input=(prop),structure=np.ones((3,3)),iterations=1).astype('float')
current_saw=saw
for i in range(20):
tprop=ndimage.binary_erosion(input=(prop),structure=np.ones((3,3)),iterations=1).astype('float')
border=prop-tprop
prop=tprop
x1,y1 = np.where(border!=0)
x2,y2 = np.where(current_saw!=0)
if x1.size==0 or x2.size==0: break
tsaw=np.zeros_like(saw)
for a in range(0,x1.size,diststeps):
minl=np.min(np.array([diststeps+a-1,x1.size-1])) +1
dis=cdist(np.vstack((x2,y2)).transpose(), np.vstack((x1[a:minl],y1[a:minl])).transpose())
ind=np.argmin(dis,axis=0)
tsaw[x1[a:minl],y1[a:minl]]=current_saw[x2[ind],y2[ind]]
saw=np.concatenate((saw[:,:,np.newaxis],tsaw[:,:,np.newaxis]),2)
saw = np.max(saw,2)
saw=ndimage.filters.gaussian_filter(saw,sigma)
saw/=np.max(saw)
current_saw=saw*(border!=0).astype('float')
saw = saw + wc +1
return saw
def binary_erosion(bImg, iterations=1):
bImg = ndimage.binary_erosion(bImg, iterations=iterations)
return bImg