def save(self, output_file, class_file=''):
if output_file.endswith('.txt'):
if (not class_file and self.c.any()):
np.savetxt(
output_file,
np.stack([self.x, self.y, self.z, self.i, self.r, self.c],
axis=1),
fmt='%.2f,%.2f,%.2f,%d,%d,%d')
else:
np.savetxt(output_file,
np.stack([self.x, self.y, self.z, self.i, self.r],
axis=1),
fmt='%.2f,%.2f,%.2f,%d,%d')
if class_file:
self.save_classifications_txt(class_file)
elif output_file.endswith('.las') or output_file.endswith('.laz'):
lfile = LasFile(output_file,
mode='w',
header=LasHeader(x_scale=0.01,
y_scale=0.01,
z_scale=0.01))
lfile.X = self.x / 0.01
lfile.Y = self.y / 0.01
lfile.Z = self.z / 0.01
lfile.Intensity = self.i
lfile.flag_byte = self.r
lfile.Classification = self.c
lfile.close()
else:
raise ValueError('Unknown file type extension: ' + output_file)
def save_las(xyzc, header, path):
# header = Header()
outfile = File(path, mode="w", header=header)
outfile.X = xyzc[:, 0]
outfile.Y = xyzc[:, 1]
outfile.Z = xyzc[:, 2]
outfile.Classification = xyzc[:, 3].astype(np.uint8)
outfile.close()
def write_LAS(pc_xyz,
v,
output_las_fn,
input_las_fn,
cmap=cm.terrain,
rescale='none'):
import datetime
from laspy.file import File
from skimage import exposure
import copy
inFile = File(input_las_fn, mode='r')
#normalize input and generate colors for height using colormap
#stretch to 10-90th percentile
#v_1090p = np.percentile(v, [10, 90])
#stretch to 2-98th percentile
v_0298p = np.percentile(v, [2, 98])
if rescale == 'none':
v_rescale = exposure.rescale_intensity(v,
in_range=(v_0298p[0],
v_0298p[1]))
elif rescale == 'median':
bounds = np.round(np.median(np.abs(v_0298p)), decimals=2)
v_rescale = exposure.rescale_intensity(v, in_range=(-bounds, bounds))
colormap_terrain = cmap
rgb = colormap_terrain(v_rescale)
#remove last column - alpha value
rgb = (rgb[:, :3] * (np.power(2, 16) - 1)).astype('uint16')
outFile = File(output_las_fn, mode='w', header=inFile.header)
new_header = copy.copy(outFile.header)
#setting some variables
new_header.created_year = datetime.datetime.now().year
new_header.created_day = datetime.datetime.now().timetuple().tm_yday
new_header.x_max = pc_xyz[:, 0].max()
new_header.x_min = pc_xyz[:, 0].min()
new_header.y_max = pc_xyz[:, 1].max()
new_header.y_min = pc_xyz[:, 1].min()
new_header.z_max = pc_xyz[:, 2].max()
new_header.z_min = pc_xyz[:, 2].min()
new_header.point_records_count = pc_xyz.shape[0]
new_header.point_return_count = 0
outFile.header.count = v.shape[0]
new_header.scale = inFile.header.scale
new_header.offset = inFile.header.offset
outFile.X = (pc_xyz[:, 0] -
inFile.header.offset[0]) / inFile.header.scale[0]
outFile.Y = (pc_xyz[:, 1] -
inFile.header.offset[1]) / inFile.header.scale[1]
outFile.Z = (pc_xyz[:, 2] -
inFile.header.offset[2]) / inFile.header.scale[2]
outFile.Red = rgb[:, 0]
outFile.Green = rgb[:, 1]
outFile.Blue = rgb[:, 2]
outFile.close()
def write_cloud(header,
point_cloud,
output_point_cloud_path,
write_extra_dimensions=False):
(h, scale, offset, evlrs, vlrs) = header
# Open output file
output_las_file = File(output_point_cloud_path,
mode='w',
header=h,
evlrs=evlrs,
vlrs=vlrs)
if write_extra_dimensions:
# Create new dimensions
for name, dimension in point_cloud.extra_dimensions_metadata.items():
output_las_file.define_new_dimension(
name=name,
data_type=dimension.get_las_type(),
description="Dimension added by Ground Extend")
# Assign dimension values
for dimension_name, values in point_cloud.extra_dimensions.items():
setattr(output_las_file, dimension_name, values)
# Adapt points to scale and offset
[x_scale, y_scale, z_scale] = scale
[x_offset, y_offset, z_offset] = offset
[x, y] = np.hsplit(point_cloud.xy, 2)
output_las_file.X = (x.ravel() - x_offset) / x_scale
output_las_file.Y = (y.ravel() - y_offset) / y_scale
output_las_file.Z = (point_cloud.z - z_offset) / z_scale
# Set color
[red, green, blue] = np.hsplit(point_cloud.rgb, 3)
output_las_file.red = red.ravel()
output_las_file.green = green.ravel()
output_las_file.blue = blue.ravel()
# Set classification
output_las_file.Classification = point_cloud.classification.astype(
np.uint8)
# Set header
output_las_file.header.scale = scale
output_las_file.header.offset = offset
# Close files
output_las_file.close()
def write_las(self, file_name: str, alt_header: File = None):
""" Writes the current points in a las format
Header used will be the same as the one provided during loading otherwise given.
"""
f = File(file_name,
mode='w',
header=alt_header if alt_header else self.header)
data = self.data(transformed=False)
f.X = data[:, 0]
f.Y = data[:, 1]
f.Z = data[:, 2]
f.Red = data[:, 3]
f.Green = data[:, 4]
f.Blue = data[:, 5]
f.close()
print 'This took %s seconds to calculate' % timetaken1
methodpointx = []
methodpointy = []
methodpointz = []
for point in methodpoints:
methodpointx.append(point[0])
methodpointy.append(point[1])
methodpointz.append(point[2])
print
newoutput_file = File('method.las', mode="w", header=inFile.header)
newoutput_file.X = methodpointx
newoutput_file.Y = methodpointy
newoutput_file.Z = methodpointz
newoutput_file.close()
inFile.close()
#######################
convertLasZip('out.las', 'out.laz')
convertLasZip('method.las', 'method.laz')
uploadToS3('out.laz', 'jippe-greyhound-to-las-test-dense',
'potree_original.laz')
uploadToS3('method.laz', 'jippe-greyhound-to-las-test-dense',
'potree_method.laz')
removeFile('out.las')
goodpointx = []
goodpointy = []
goodpointz = []
for point in allpoints:
if viewfrustum.isVisible([point[0], point[1], point[2]]):
goodpointx.append(point[0])
goodpointy.append(point[1])
goodpointz.append(point[2])
print 'There are %s points in the view frustum' % len(goodpointx)
output_file = File('frustumfile.las', mode = "w", header = inFile.header)
output_file.X = goodpointx
output_file.Y = goodpointy
output_file.Z = goodpointz
allpoints = []
for i in range(len(goodpointx)):
templist = []
templist.append(goodpointx[i])
templist.append(goodpointy[i])
templist.append(goodpointz[i])
allpoints.append((templist))
#########################
# Method implementation #
#########################
distdict = {}
def implementation(camera_url):
### Preparation
url = camera_url
parsed = urlparse.urlparse(url)
params = urlparse.parse_qsl(parsed.query)
dict_params = dict(params)
# what is in dict_params:
# ps = point size
# pa = point size attenuation (closer to you appear larger)
# ca = camera rotation xy (z-axis)
# ce = camera rotation yz (x-axis)
# cd = camera distance to target
# s = server
# r = resource
# ze = Z-exaggeration
# c0s = imagery
# ct = camera target
resource = dict_params['r']
camera_target = ast.literal_eval(dict_params['ct'])
camera_rotation_z = ast.literal_eval(dict_params['ca'])
camera_rotation_x = ast.literal_eval(dict_params['ce'])
camera_distance = ast.literal_eval(dict_params['cd'])
print('Angle_z: {}'.format(camera_rotation_z))
print('Angle_x: {}'.format(camera_rotation_x))
print('Distance: {}'.format(camera_distance))
print('Target: {}'.format(camera_target))
return
filenameList = []
filenameDict = {}
densityDict = {}
bboxDict = {}
### Retrieve points from webserver
downloadFromS3('jippe-home', 'POTREE_reads.txt', 'urls.txt')
potreefile = open('urls.txt', 'r')
for j, line in enumerate(potreefile):
# extract params from READ request
url = line
parsed = urlparse.urlparse(url)
params = urlparse.parse_qsl(parsed.query)
dict_params = dict(params)
# what is in dict_params?
# depthBegin = starting depth
# scale = dataset scale
# depthEnd = end depth
# compress = stored as LAZ (True) or LAS (False)
# bounds = bbox
# offset = offset from main dataset (AHN2)
# to make box an actual list:
# import ast
# ast.literal_eval(dict_params['bounds'])
box = ast.literal_eval(dict_params['bounds'])
depthBegin = int(dict_params['depthBegin'])
depthEnd = int(dict_params['depthEnd'])
dataset_offset = ast.literal_eval(dict_params['offset'])
adjusted_camera_target = tuple(
c_i - d_i for c_i, d_i in zip(camera_target, dataset_offset))
if depthEnd - depthBegin != 1:
startDepth = depthEnd
# make sure all octree levers are 4 numbers
filler = '0' * (4 - len(str(depthEnd)))
depth = filler + str(depthEnd)
# create filename with depth '0000' appended to front
filename = '%soriginalfile%s.las' % (depth, j)
filenameList.append(filename)
# make filenamedict for merging with lasmerge
if depth in filenameDict:
appendfilename = filename + ' '
filenameDict[depth] += appendfilename
else:
appendfilename = ' ' + filename + ' '
filenameDict[depth] = appendfilename
# retrieve from Greyhound webserver
BASE = getGreyhoundServer()
allinfo = info(BASE, resource)
dtype = buildNumpyDescription(allinfo['schema'])
data = readdata(BASE, resource, box, depthBegin, depthEnd)
writeLASfile(dtype, data, filename)
potreefile.close()
# find camera offset
camera_offset_command = "".join(
('lasinfo -i ', filenameList[0], ' -nv -nmm -nco -o outputfile.txt'))
os.system(camera_offset_command)
with open('outputfile.txt') as f:
for line in f:
if line[:14] == ' offset x y z':
print(line)
newline = line.split()
camera_offset_params = float(newline[4]), float(
newline[5]), float(newline[6])
# Create a filename list with sorted filenameDict values
levelfilenameList = []
for key in filenameDict:
levelfilenameList.append("".join((key, '.las')))
levelfilenameList.sort()
print(filenameList)
# For each 'level' create 1 file
for key in filenameDict:
filenames = filenameDict[key]
outname = "".join((key, '.las'))
mergefiles = 'lasmerge -i ' + filenames + ' -o ' + outname
os.system(mergefiles)
# Cleanup
for filename in filenameList:
try:
removeFile(filename)
except OSError as e:
print(e)
print '%s does not exist' % filename
# Create one single file
mergefiles = 'lasmerge -i *.las -o out.las'
os.system(mergefiles)
for filename in levelfilenameList:
try:
removeFile(filename)
except OSError as e:
print(e)
print('{} does not exist'.format(filename))
### Find formula for gradual density descent. This is implemented
### in more detail in other files in this folder. If needed copy
### the basics from there and continue.
#########################
# Method implementation #
#########################
inFile = openLasFile('out.las')
numpoints = len(inFile.points)
print 'There are %s points in the original file' % numpoints
goodpoints = np.vstack((inFile.x, inFile.y, inFile.z)).transpose()
allpoints = []
for i in range(len(goodpoints)):
templist = []
templist.append(goodpoints[i][0])
templist.append(goodpoints[i][1])
templist.append(goodpoints[i][2])
allpoints.append(tuple(templist))
used = [False] * len(allpoints)
kdtree = scipy.spatial.KDTree(allpoints)
methodpoints = set([])
starttime1 = time.time()
percentage = 0
for j, point in enumerate(allpoints):
if used[j] == True:
continue
# !!!This needs some serious reworking!!! (see comment down below)
# We can assume the camera parameters needed are just the camera_origin, this is because the
# speck.ly query itsself has already made the distinguishment what is inside and outside of the
# view frustrum. Knowing this it should be an operation using both the known angles and the
# distance from the target that give us the location; simple stuff
def find_vector(alpha, beta):
"""
Alpha is the angle from Y to Z
Beta is the angle from X to Z
"""
a, b = math.radians(alpha), math.radians(beta)
x = -1 * math.sin(a) * math.cos(b)
y = -1 * math.cos(a) * math.cos(b)
z = math.sin(b)
return (x, y, z)
print('Calculating camera_parameters')
camera_vector = find_vector(camera_angle_y, camera_angle_x)
print('Camera vector: {}'.format(camera_vector))
camera_vector_distance = tuple(x * camera_distance for x in camera_vector)
print('Camera vector distance: {}'.format(camera_vector_distance))
print('Calculated using:')
print('Angle_x: {}'.format(camera_angle_x))
print('Angle_y: {}'.format(camera_angle_y))
print('Distance: {}'.format(camera_distance))
print('Target: {}'.format(adjusted_camera_target))
camera_origin = adjusted_camera_target
distancevector = (point[0] - camera_origin[0], point[1] - camera_origin[1],
point[2] - camera_origin[2])
distance = (distancevector[0]**2 + distancevector[1]**2 +
distancevector[2]**2)**0.5
# implement exponential function here
# This should later be the density function
nn = kdtree.query_ball_point(point, distance**0.2)
appendvar = True
for i in nn:
if allpoints[i] in methodpoints:
appendvar = False
break
if appendvar == True:
methodpoints.add(point)
for i in nn:
used[i] = True
newpercentage = int(j / float(numpoints) * 100)
if newpercentage > percentage:
percentage = newpercentage
if percentage == 1 or percentage % 10 == 0:
print "Work in progress, %d%% done" % percentage
endtime1 = time.time()
timetaken1 = endtime1 - starttime1
print 'There are %s points in the view frustum after vario-scale method application' % len(
methodpoints)
print 'This took %s seconds to calculate' % timetaken1
methodpointx = []
methodpointy = []
methodpointz = []
for point in methodpoints:
methodpointx.append(point[0])
methodpointy.append(point[1])
methodpointz.append(point[2])
print
newoutput_file = File('method.las', mode="w", header=inFile.header)
newoutput_file.X = methodpointx
newoutput_file.Y = methodpointy
newoutput_file.Z = methodpointz
newoutput_file.close()
inFile.close()
#######################
convertLasZip('out.las', 'out.laz')
convertLasZip('method.las', 'method.laz')
uploadToS3('out.laz', 'jippe-greyhound-to-las-test-dense', "".join(
('plasio_', resource, '_potree_original.laz')))
uploadToS3('method.laz', 'jippe-greyhound-to-las-test-dense', "".join(
('plasio_', resoure, '_potree_method.laz')))
removeFile('out.las')
removeFile('out.laz')
removeFile('method.las')
removeFile('method.laz')
removeFile('urls.txt')
removeFile('outputfile.txt')
def base_method(self, file_name):
""""
Base method implementation
"""
#########################
# Method implementation #
#########################
inFile = openLasFile(filename)
numpoints = len(inFile.points)
print 'There are %s points in the original file' % numpoints
goodpoints = np.vstack((inFile.x, inFile.y, inFile.z)).transpose()
allpoints = []
for i in range(len(goodpoints)):
templist = []
templist.append(goodpoints[i][0])
templist.append(goodpoints[i][1])
templist.append(goodpoints[i][2])
allpoints.append(tuple(templist))
used = [False] * len(allpoints)
kdtree = scipy.spatial.KDTree(allpoints)
methodpoints = set([])
starttime1 = time.time()
percentage = 0
for j, point in enumerate(allpoints):
if used[j] == True:
continue
distancevector = (point[0] - self.camera_origin[0],
point[1] - self.camera_origin[1],
point[2] - self.camera_origin[2])
distance = (distancevector[0]**2 + distancevector[1]**2 +
distancevector[2]**2)**0.5
# implement logarithmic(e) function here
nn = kdtree.query_ball_point(point, np.log(distance * 0.5))
appendvar = True
for i in nn:
if allpoints[i] in methodpoints:
appendvar = False
break
if appendvar == True:
methodpoints.add(point)
for i in nn:
used[i] = True
newpercentage = int(j / float(numpoints) * 100)
if newpercentage > percentage:
percentage = newpercentage
print "Work in progress, %d%% done" % percentage
endtime1 = time.time()
timetaken1 = endtime1 - starttime1
print 'There are %s points in the view frustum after vario-scale method application' % len(
methodpoints)
print 'This took %s seconds to calculate' % timetaken1
methodpointx = []
methodpointy = []
methodpointz = []
for point in methodpoints:
methodpointx.append(point[0])
methodpointy.append(point[1])
methodpointz.append(point[2])
newoutput_file = File('method.las', mode="w", header=inFile.header)
newoutput_file.X = methodpointx
newoutput_file.Y = methodpointy
newoutput_file.Z = methodpointz
newoutput_file.close()
inFile.close()
#######################
convertLasZip(filename, 'out.laz')
convertLasZip('method.las', 'method.laz')
uploadToS3('out.laz', 'jippe-greyhound-to-las-test-dense',
'potree_original.laz')
uploadToS3('method.laz', 'jippe-greyhound-to-las-test-dense',
'potree_method.laz')
removeFile(filename)
removeFile('out.laz')
removeFile('method.las')
removeFile('method.laz')
goodpointy = []
goodpointz = []
for point in allpoints:
if viewfrustum.isVisible([point[0], point[1], point[2]]):
goodpointx.append(point[0])
goodpointy.append(point[1])
goodpointz.append(point[2])
print 'There are %s points in the view frustum' % len(goodpointx)
output_file = File('frustumfile.las', mode = "w", header = inFile.header)
output_file.X = goodpointx
output_file.Y = goodpointy
output_file.Z = goodpointz
inFile.close()
output_file.close()
convertLasZip('originalfile.las', 'originalfile.laz')
convertLasZip('frustumfile.las', 'frustumfile.laz')
uploadToS3('originalfile.laz', 'jippe-greyhound-to-las-test-dense', 'greyhound_to_las_test_original.laz')
uploadToS3('frustumfile.laz', 'jippe-greyhound-to-las-test-dense', 'greyhound_to_las_test_frustum.laz')
removeFile('originalfile.las')
removeFile('originalfile.laz')
removeFile('frustumfile.las')
removeFile('frustumfile.laz')