def dog(image,
start=1.0,
stop=None,
levels=3,
psize=1,
threshold=0.0,
edge_threshold=3.0):
image = image.astype("f8")
threshold *= 5.0
features = []
pyramid = mkpyramid(image, start=start, stop=stop, levels=levels)
for o, (sizes, octave) in enumerate(pyramid):
for (level, row, col), value in peaks.maxima(octave, psize):
if value > threshold:
s1, s2, psi = peaks.fit2d(octave[level], row, col)
if s2 != 0 and ((s1 / s2) < edge_threshold):
keypoint = keypoints.Keypoint(col, row, sizes[level], psi,
value, level, 1)
features += [keypoint]
save(pyramid, features, "levels")
return features
def create_preview(self, file):
image = imaging.load(file)[0]
image = imaging.filters.norm(image, 0.01, 0.01, 0, 255)
# image = imaging.filters.zoom(image, 0.25)
preview_file = '{}.preview.png'.format(file)
imaging.save(image, preview_file)
return preview_file
def save(pyramid, keys, root):
sizes, octave = pyramid[0]
octave = filters.norm(octave, 5, 5, 0, 255)
key_levels = binby(keys, lambda x: int(x.octave))
for l, level in enumerate(octave):
drawn = level
if l in key_levels:
drawn = keypoints.draw(level, key_levels[l])
save(drawn, pyfs.join(root, "%f.png" % sizes[l]), norm=False)
def topng(mrc, scale, force):
png = pyfs.rext(mrc, 'png')
png = mrc + '.png'
if not force and pyfs.exists(png):
return
print(mrc, '->', png)
image = imaging.load(mrc)[0]
image = imaging.filters.zoom(image, scale)
imaging.save(image, png)
def create_preview(self, file):
try:
image = imaging.load(file)[0]
image = imaging.filters.norm(image, 0.01, 0.01, 0, 255)
image = imaging.filters.zoom(image, 0.25)
preview_file = '{}.preview.png'.format(file)
imaging.save(image, preview_file)
return preview_file
except Exception as e:
print(e)
return None
def test():
path = "cache/13apr24b_00002sq_v02_00004hl_v01_00002en.mrc"
start = 2
stop = 80
levels = 10
ring = 1.2
factor = 0.25
psize = 2
emax = 4.0
vmin = 0.01
image = filters.zoom(load(path), factor)
pyramid = mkpyramid(image, start, stop, levels, ring)
features = find_peaks(pyramid, vmin, emax, psize)
save_pyramid(pyramid, "out")
save(keypoints.draw(image, features[-3000:]), "out.png")
def binby(items, binner):
bins = {}
for item in items:
bin = binner(item)
if bin not in bins:
bins[bin] = []
bins[bin] += [item]
return bins
def save(pyramid, keys, root):
sizes, octave = pyramid[0]
octave = filters.norm(octave, 5, 5, 0, 255)
key_levels = binby(keys, lambda x: int(x.octave))
for l, level in enumerate(octave):
drawn = level
if l in key_levels:
drawn = keypoints.draw(level, key_levels[l])
save(drawn, pyfs.join(root, "%f.png" % sizes[l]), norm=False)
if __name__ == "__main__":
import sys
import imaging
a = imaging.load(
"/Users/craigyk/Desktop/classifier/cache/13apr24b_00002sq_v02_00002hl_v01_00003en.mrc"
)
a = imaging.filters.zoom(a, 0.25)
features = detect(a, start=1.5, levels=5)
save(draw(a, features), sys.argv[1])
def save(image, keys, root):
image = filters.norm(image, 5, 5, 0, 255)
key_sizes = binby(keys, lambda x: int(x.size))
for size in key_sizes:
drawn = keypoints.draw(image, key_sizes[size])
save(drawn, pyfs.join(root, "%f.png"%size))
def save_octave(radii, octave, root):
levels = filters.norm(octave, 1, 1, 0, 255)
for size, level in zip(radii, levels):
save(level, pyfs.join(root, "%2.2f.png"%(size)), norm=False)
def preview_montage(self, src, dst, section=0):
image_stack = imaging.load(str(src), format='mrc')
image = image_stack[section]
image = imaging.filters.norm(image, 0.01, 0.01, 0, 255)
imaging.save(image, str(dst), norm=False)
return dst
@jit
def draw_gaussian(canvas, amp, cx, cy, psi, sx, sy):
for row in range(canvas.shape[0]):
for col in range(canvas.shape[1]):
canvas[row, col] = gaussian_2d(amp, cx, cy, psi, sx, sy, col, row)
return canvas
if __name__ == "__main__":
import time
from imaging import save, load
a = draw_gaussian(np.zeros([512, 512]), 1.0, 255.7, 256.4,
np.radians(21.2), 20, 100)
save(a, "temp_a.png")
t0 = time.time()
params = fit_gaussian2d(a, 256, 256)
print("took:", time.time() - t0)
print("amp:", params[0])
print("center:", params[2], params[1])
print("sigmas:", params[4], params[5])
print("psi:", np.degrees(params[3]) % 360)
b = draw_gaussian(np.zeros([512, 512]), *params)
save(b, "temp_b.png")
c = np.zeros([4000, 4000])
c[23, 43] = 1.0
c[443, 3242] = 1.0
