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#coding=utf8
################################################################################
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### École Polytechnique, Palaiseau, France ###
### ###
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import numpy
import vtk
import myPythonLibrary as mypy
import myVTKPythonLibrary as myvtk
import dolfin_dic as ddic
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def generateUndersampledImages(
images,
structure,
texture,
noise,
deformation,
evolution,
undersampling_level,
keep_temporary_images=0,
verbose=0):
mypy.my_print(verbose, "*** generateUndersampledImages ***")
images_basename = images["basename"]
images_n_voxels = images["n_voxels"][:]
images["n_voxels"][1] /= undersampling_level
if (images["n_dim"] >= 3):
images["n_voxels"][2] /= undersampling_level
images["basename"] = images_basename+"-X"
texture["type"] = "taggX"
fedic.generateImages(
images=images,
structure=structure,
texture=texture,
noise=noise,
deformation=deformation,
evolution=evolution,
verbose=verbose-1)
images["n_voxels"] = images_n_voxels[:]
images["basename"] = images_basename
images["n_voxels"][0] /= undersampling_level
if (images["n_dim"] >= 3):
images["n_voxels"][2] /= undersampling_level
images["basename"] = images_basename+"-Y"
texture["type"] = "taggY"
fedic.generateImages(
images=images,
structure=structure,
texture=texture,
noise=noise,
deformation=deformation,
evolution=evolution,
verbose=verbose-1)
images["n_voxels"] = images_n_voxels[:]
images["basename"] = images_basename
if (images["n_dim"] >= 3):
images["n_voxels"][0] /= undersampling_level
images["n_voxels"][1] /= undersampling_level
images["basename"] = images_basename+"-Z"
texture["type"] = "taggZ"
fedic.generateImages(
images=images,
structure=structure,
texture=texture,
noise=noise,
deformation=deformation,
evolution=evolution,
verbose=verbose-1)
images["n_voxels"] = images_n_voxels
images["basename"] = images_basename
if ("zfill" not in images.keys()):
images["zfill"] = len(str(images["n_frames"]))
for k_frame in xrange(images["n_frames"]):
imageX = myvtk.readImage(
filename=images["folder"]+"/"+images["basename"]+"-X_"+str(k_frame).zfill(images["zfill"])+".vti",
verbose=verbose-1)
interpolatorX = myvtk.getImageInterpolator(
image=imageX,
verbose=verbose-1)
iX = numpy.empty(1)
imageY = myvtk.readImage(
filename=images["folder"]+"/"+images["basename"]+"-Y_"+str(k_frame).zfill(images["zfill"])+".vti",
verbose=verbose-1)
interpolatorY = myvtk.getImageInterpolator(
image=imageY,
verbose=verbose-1)
iY = numpy.empty(1)
if (images["n_dim"] == 2):
imageXY = vtk.vtkImageData()
imageXY.SetExtent([0, images["n_voxels"][0]-1, 0, images["n_voxels"][1]-1, 0, 0])
imageXY.SetSpacing([images["L"][0]/images["n_voxels"][0], images["L"][1]/images["n_voxels"][1], 1.])
imageXY.SetOrigin([images["L"][0]/images["n_voxels"][0]/2, images["L"][1]/images["n_voxels"][1]/2, 0.])
if (vtk.vtkVersion.GetVTKMajorVersion() >= 6):
imageXY.AllocateScalars(vtk.VTK_FLOAT, 1)
else:
imageXY.SetScalarTypeToFloat()
imageXY.SetNumberOfScalarComponents(1)
imageXY.AllocateScalars()
scalars = imageXY.GetPointData().GetScalars()
x = numpy.empty(3)
for k_point in xrange(imageXY.GetNumberOfPoints()):
imageXY.GetPoint(k_point, x)
interpolatorX.Interpolate(x, iX)
interpolatorY.Interpolate(x, iY)
scalars.SetTuple(k_point, (iX*iY)**(1./2))
myvtk.writeImage(
image=imageXY,
filename=images["folder"]+"/"+images["basename"]+"_"+str(k_frame).zfill(images["zfill"])+".vti",
verbose=verbose-1)
if not (keep_temporary_images):
os.system("rm "+images["folder"]+"/"+images["basename"]+"-X_"+str(k_frame).zfill(images["zfill"])+".vti")
os.system("rm "+images["folder"]+"/"+images["basename"]+"-Y_"+str(k_frame).zfill(images["zfill"])+".vti")
elif (images["n_dim"] == 3):
imageZ = myvtk.readImage(
filename=images["folder"]+"/"+images["basename"]+"-Z_"+str(k_frame).zfill(images["zfill"])+".vti",
verbose=verbose-1)
interpolatorZ = myvtk.getImageInterpolator(
image=imageZ,
verbose=verbose-1)
iZ = numpy.empty(1)
imageXYZ = vtk.vtkImageData()
imageXYZ.SetExtent([0, images["n_voxels"][0]-1, 0, images["n_voxels"][1]-1, 0, images["n_voxels"][2]-1])
imageXYZ.SetSpacing([images["L"][0]/images["n_voxels"][0], images["L"][1]/images["n_voxels"][1], images["L"][2]/images["n_voxels"][2]])
imageXYZ.SetOrigin([images["L"][0]/images["n_voxels"][0]/2, images["L"][1]/images["n_voxels"][1]/2, images["L"][2]/images["n_voxels"][2]/2])
if (vtk.vtkVersion.GetVTKMajorVersion() >= 6):
imageXYZ.AllocateScalars(vtk.VTK_FLOAT, 1)
else:
imageXYZ.SetScalarTypeToFloat()
imageXYZ.SetNumberOfScalarComponents(1)
imageXYZ.AllocateScalars()
scalars = imageXYZ.GetPointData().GetScalars()
x = numpy.empty(3)
for k_point in xrange(imageXYZ.GetNumberOfPoints()):
imageXYZ.GetPoint(k_point, x)
interpolatorX.Interpolate(x, iX)
interpolatorY.Interpolate(x, iY)
interpolatorZ.Interpolate(x, iZ)
scalars.SetTuple(k_point, (iX*iY*iZ)**(1./3))
myvtk.writeImage(
image=imageXYZ,
filename=images["folder"]+"/"+images["basename"]+"_"+str(k_frame).zfill(images["zfill"])+".vti",
verbose=verbose-1)
if not (keep_temporary_images):
os.system("rm "+images["folder"]+"/"+images["basename"]+"-X_"+str(k_frame).zfill(images["zfill"])+".vti")
os.system("rm "+images["folder"]+"/"+images["basename"]+"-Y_"+str(k_frame).zfill(images["zfill"])+".vti")
os.system("rm "+images["folder"]+"/"+images["basename"]+"-Z_"+str(k_frame).zfill(images["zfill"])+".vti")