def keypressCallback(obj, ev):
key = obj.GetKeySym()
if key == "s":
filter.Modified()
filter.SetInputBufferTypeToZBuffer()
filter.Update()
scale = vtk.vtkImageShiftScale()
scale.SetOutputScalarTypeToUnsignedChar()
scale.SetInputConnection(filter.GetOutputPort())
scale.SetShift(0)
scale.SetScale(-300)
scale2 = vtk.vtkImageShiftScale()
scale2.SetOutputScalarTypeToUnsignedChar()
scale2.SetInputConnection(scale.GetOutputPort())
scale2.SetShift(255)
global iteration
iteration = iteration + 1
file_name = "/home/vishnusanjay/cmpt764/Final project/last_examples/depthimages_1/chair_" + \
str(iteration) + ".bmp"
imageWriter = vtk.vtkBMPWriter()
imageWriter.SetFileName(file_name)
imageWriter.SetInputConnection(scale2.GetOutputPort())
imageWriter.Write()
def Execute(self):
if self.Image == None:
self.PrintError('Error: No input image.')
if self.MapRanges:
if self.InputRange == [0.0, 0.0]:
self.InputRange = self.Image.GetScalarRange()
if self.InputRange[1] == self.InputRange[0]:
self.PrintError(
'Error: Input range has zero width. Cannot map values')
self.Shift = -self.InputRange[0]
self.Scale = (self.OutputRange[1] - self.OutputRange[0]) / (
self.InputRange[1] - self.InputRange[0])
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputData(self.Image)
shiftScale.SetShift(self.Shift)
shiftScale.SetScale(self.Scale)
if self.OutputType == 'double':
shiftScale.SetOutputScalarTypeToDouble()
elif self.OutputType == 'uchar':
shiftScale.SetOutputScalarTypeToUnsignedChar()
elif self.OutputType == 'char':
shiftScale.SetOutputScalarTypeToChar()
elif self.OutputType == 'ushort':
shiftScale.SetOutputScalarTypeToUnsignedShort()
elif self.OutputType == 'short':
shiftScale.SetOutputScalarTypeToShort()
elif self.OutputType == 'ulong':
shiftScale.SetOutputScalarTypeToUnsignedLong()
elif self.OutputType == 'long':
shiftScale.SetOutputScalarTypeToLong()
elif self.OutputType == 'uint':
shiftScale.SetOutputScalarTypeToUnsignedInt()
elif self.OutputType == 'int':
shiftScale.SetOutputScalarTypeToInt()
elif self.OutputType == 'float':
shiftScale.SetOutputScalarTypeToFloat()
if self.OutputType != 'unchanged':
if self.ClampOverflowOn:
shiftScale.ClampOverflowOn()
shiftScale.ClampOverflowOff()
shiftScale.Update()
self.Image = shiftScale.GetOutput()
if self.MapRanges and self.OutputRange[0] != 0.0:
shiftScale2 = vtk.vtkImageShiftScale()
shiftScale2.SetInputData(self.Image)
shiftScale2.SetShift(self.OutputRange[0])
shiftScale2.SetScale(1.0)
shiftScale2.Update()
self.Image = shiftScale2.GetOutput()
def Execute(self):
if self.Image == None:
self.PrintError('Error: No input image.')
if self.MapRanges:
if self.InputRange == [0.0,0.0]:
self.InputRange = self.Image.GetScalarRange()
if self.InputRange[1] == self.InputRange[0]:
self.PrintError('Error: Input range has zero width. Cannot map values')
self.Shift = -self.InputRange[0]
self.Scale = (self.OutputRange[1] - self.OutputRange[0]) / (self.InputRange[1] - self.InputRange[0])
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInput(self.Image)
shiftScale.SetShift(self.Shift)
shiftScale.SetScale(self.Scale)
if self.OutputType == 'double':
shiftScale.SetOutputScalarTypeToDouble()
elif self.OutputType == 'uchar':
shiftScale.SetOutputScalarTypeToUnsignedChar()
elif self.OutputType == 'char':
shiftScale.SetOutputScalarTypeToChar()
elif self.OutputType == 'ushort':
shiftScale.SetOutputScalarTypeToUnsignedShort()
elif self.OutputType == 'short':
shiftScale.SetOutputScalarTypeToShort()
elif self.OutputType == 'ulong':
shiftScale.SetOutputScalarTypeToUnsignedLong()
elif self.OutputType == 'long':
shiftScale.SetOutputScalarTypeToLong()
elif self.OutputType == 'uint':
shiftScale.SetOutputScalarTypeToUnsignedInt()
elif self.OutputType == 'int':
shiftScale.SetOutputScalarTypeToInt()
elif self.OutputType == 'float':
shiftScale.SetOutputScalarTypeToFloat()
if self.OutputType != 'unchanged':
if self.ClampOverflowOn:
shiftScale.ClampOverflowOn()
shiftScale.ClampOverflowOff()
shiftScale.Update()
self.Image = shiftScale.GetOutput()
if self.MapRanges and self.OutputRange[0] != 0.0:
shiftScale2 = vtk.vtkImageShiftScale()
shiftScale2.SetInput(self.Image)
shiftScale2.SetShift(self.OutputRange[0])
shiftScale2.SetScale(1.0)
shiftScale2.Update()
self.Image = shiftScale2.GetOutput()
def __init__(self, comedi, cfg_dict):
self._comedi = comedi
self._cfg = cfg_dict
# we'll store our local bindings here
self._d1 = None
self._d2m = None
self._conf = None
self._cmap_range = [-1024, 3072]
self._cmap_type = CMAP_BLUE_TO_YELLOW_PL
# color scales thingy
self._color_scales = vtk_kit.color_scales.ColorScales()
# instantiate us a slice viewer
rwi,ren = comedi.get_compvis_vtk()
self._sv = comedi_utils.CMSliceViewer(rwi, ren)
# now make our own MapToColors
ct = 32
lut = self._sv.ipws[0].GetLookupTable()
self._cmaps = [vtktudoss.vtkCVImageMapToColors() for _ in range(3)]
for i,cmap in enumerate(self._cmaps):
cmap.SetLookupTable(lut)
cmap.SetConfidenceThreshold(ct)
self._sv.ipws[i].SetColorMap(cmap)
self._set_confidence_threshold_ui(ct)
comedi.sync_slice_viewers.add_slice_viewer(self._sv)
# now build up the VTK pipeline #############################
# we'll use these to scale data between 0 and max.
self._ss1 = vtk.vtkImageShiftScale()
self._ss1.SetOutputScalarTypeToShort()
self._ss2 = vtk.vtkImageShiftScale()
self._ss2.SetOutputScalarTypeToShort()
# we have to cast the confidence to shorts as well
self._ssc = vtk.vtkImageShiftScale()
self._ssc.SetOutputScalarTypeToShort()
self._iac = vtk.vtkImageAppendComponents()
# data1 will form the context
self._iac.SetInput(0, self._ss1.GetOutput())
# subtraction will form the focus
self._iac.SetInput(1, self._ss2.GetOutput())
# third input will be the confidence
self._iac.SetInput(2, self._ssc.GetOutput())
# event bindings ############################################
self._bind_events()
def Get_filter(self):
x1 = float(self.gui.m_textCtrlOldValue1.GetValue())
y1 = float(self.gui.m_textCtrlOldValue2.GetValue())
x2 = float(self.gui.m_textCtrlNewValue1.GetValue())
y2 = float(self.gui.m_textCtrlNewValue2.GetValue())
if x1 == x2 and y1 == y2:
logging.info("Current values will have no effect.")
return None
if x1 == y1 or x2 == y2:
logging.info("Cannot satisfy these shift/scale")
return None
shift = x2 - x1
scale = (y2 - x2) / (y1 - x1)
_type = [
vtk.VTK_CHAR, vtk.VTK_UNSIGNED_CHAR, vtk.VTK_SHORT,
vtk.VTK_UNSIGNED_SHORT, vtk.VTK_INT, vtk.VTK_FLOAT, vtk.VTK_DOUBLE
][self.gui.m_choiceScalarType.GetSelection()]
_filter = vtk.vtkImageShiftScale()
_filter.SetInput(component.getUtility(ICurrentImage).GetRealImage())
_filter.SetOutputScalarType(_type)
_filter.SetScale(scale)
_filter.SetShift(shift)
_filter.SetClampOverflow(
int(self.gui.m_checkBoxClampOverflow.GetValue()))
return _filter
def DownsampleImage(self, image, nbits=8):
"""Downsamples an image"""
image.SetReleaseDataFlag(1)
# get the min and max values from the image
(minval, maxval) = image.GetScalarRange()
# create an 8-bit version of this image
_filter = vtk.vtkImageShiftScale()
_filter.SetInput(image.GetRealImage())
_filter.SetShift(-minval)
try:
if nbits == 8:
_filter.SetScale(255.0 / (maxval - minval))
elif nbits == 16:
_filter.SetScale(65535.0 / (maxval - minval))
except ZeroDivisionError:
logging.exception("DownsampleImage")
_filter.SetScale(1.0)
if nbits == 8:
_filter.SetOutputScalarTypeToUnsignedChar()
elif nbits == 16:
_filter.SetOutputScalarTypeToShort()
elif nbits == 32:
_filter.SetOutputScalarTypeToFloat()
elif nbits == 64:
_filter.SetOutputScalarTypeToDouble()
_filter.AddObserver('ProgressEvent', self.HandleVTKProgressEvent)
_filter.SetProgressText("Downsampling to %d-bit..." % nbits)
logging.info("Image downsampled to {0}-bit".format(nbits))
_filter.Update()
return MVImage.MVImage(_filter.GetOutputPort(), input=image)
def WritePNGImageFile(self):
if self.OutputFileName == "":
self.PrintError("Error: no OutputFileName.")
self.PrintLog("Writing PNG image file.")
outputImage = self.Image
if self.Image.GetScalarTypeAsString() != "unsigned char":
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInput(self.Image)
if self.WindowLevel[0] == 0.0:
scalarRange = self.Image.GetScalarRange()
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(255.0 / (scalarRange[1] - scalarRange[0]))
else:
shiftScale.SetShift(-(self.WindowLevel[1] - self.WindowLevel[0] / 2.0))
shiftScale.SetScale(255.0 / self.WindowLevel[0])
shiftScale.SetOutputScalarTypeToUnsignedChar()
shiftScale.ClampOverflowOn()
shiftScale.Update()
outputImage = shiftScale.GetOutput()
writer = vtk.vtkPNGWriter()
writer.SetInput(outputImage)
if self.Image.GetDimensions()[2] == 1:
writer.SetFileName(self.OutputFileName)
else:
writer.SetFilePrefix(self.OutputFileName)
writer.SetFilePattern("%s%04d.png")
writer.Write()
def ipl_maskaimpeel(image_in1, image_in2, peel_iter):
ipl_maskaimpeel_settings(peel_iter)
extent = image_in1.GetExtent()
voi = vtk.vtkExtractVOI()
voi.SetInput(image_in1)
voi.SetVOI(extent[0], extent[1], extent[2], extent[3], extent[4],
extent[5])
voi.Update()
shift = vtk.vtkImageShiftScale()
shift.SetInputConnection(voi.GetOutputPort())
shift.SetOutputScalarTypeToUnsignedChar()
shift.Update()
mask = vtk.vtkImageMask()
mask.SetImageInput(image_in2)
mask.SetMaskInput(shift.GetOutput())
mask.SetMaskedOutputValue(0)
mask.Update()
if peel_iter != 0:
erode = vtk.vtkImageContinuousErode3D()
erode.SetInputConnection(mask.GetOutputPort())
erode.SetKernelSize(peel_iter + 1, peel_iter + 1, peel_iter + 1)
erode.Update()
mask = erode
image_out = mask.GetOutput()
return image_out
def getIntensityScaledData(self, data):
"""
Return the data shifted and scaled to appropriate intensity range
"""
if not self.explicitScale:
return data
if self.intensityScale == -1:
return data
if not self.shift:
self.shift = vtk.vtkImageShiftScale()
self.shift.SetOutputScalarTypeToUnsignedChar()
self.shift.SetClampOverflow(1)
self.shift.SetInputConnection(data.GetProducerPort())
# Need to call this or it will remember the whole extent it got from resampling
self.shift.UpdateWholeExtent()
if self.intensityScale:
self.shift.SetScale(self.intensityScale)
currScale = self.intensityScale
else:
minval, maxval = self.originalScalarRange
scale = 255.0 / maxval
self.shift.SetScale(scale)
currScale = scale
self.shift.SetShift(self.intensityShift)
Logging.info("Intensity shift = %d, scale = %f" %
(self.intensityShift, currScale),
kw="datasource")
return self.shift.GetOutput()
def _handleFailedImage(idiff, pngr, img_fname):
"""Writes all the necessary images when an image comparison
failed."""
f_base, f_ext = os.path.splitext(img_fname)
# write the difference image gamma adjusted for the dashboard.
gamma = vtk.vtkImageShiftScale()
gamma.SetInputConnection(idiff.GetOutputPort())
gamma.SetShift(0)
gamma.SetScale(10)
pngw = vtk.vtkPNGWriter()
pngw.SetFileName(_getTempImagePath(f_base + ".diff.png"))
pngw.SetInputConnection(gamma.GetOutputPort())
pngw.Write()
# Write out the image that was generated. Write it out as full so that
# it may be used as a baseline image if the tester deems it valid.
pngw.SetInputConnection(idiff.GetInputConnection(0,0))
pngw.SetFileName(_getTempImagePath(f_base + ".png"))
pngw.Write()
# write out the valid image that matched.
pngw.SetInputConnection(idiff.GetInputConnection(1,0))
pngw.SetFileName(_getTempImagePath(f_base + ".valid.png"))
pngw.Write()
def getMIP(imageData, color):
"""
A function that will take a volume and do a simple
maximum intensity projection that will be converted to a
wxBitmap
"""
maxval = imageData.GetScalarRange()[1]
imageData.SetUpdateExtent(imageData.GetWholeExtent())
if maxval > 255:
shiftscale = vtk.vtkImageShiftScale()
shiftscale.SetInputConnection(imageData.GetProducerPort())
shiftscale.SetScale(255.0 / maxval)
shiftscale.SetOutputScalarTypeToUnsignedChar()
imageData = shiftscale.GetOutput()
mip = vtkbxd.vtkImageSimpleMIP()
mip.SetInputConnection(imageData.GetProducerPort())
if color == None:
output = optimize.execute_limited(mip)
return output
if mip.GetOutput().GetNumberOfScalarComponents() == 1:
ctf = getColorTransferFunction(color)
maptocolor = vtk.vtkImageMapToColors()
maptocolor.SetInputConnection(mip.GetOutputPort())
maptocolor.SetLookupTable(ctf)
maptocolor.SetOutputFormatToRGB()
imagedata = optimize.execute_limited(maptocolor)
else:
imagedata = output = optimize.execute_limited(mip)
return imagedata
def convert_scene_to_numpy_array(self):
"""
Convert the current window view to a numpy array.
:return output: Scene as numpy array
"""
vtk_win_to_img_filter = vtk.vtkWindowToImageFilter()
vtk_win_to_img_filter.SetInput(self.GetRenderWindow())
if not self.zbuffer:
vtk_win_to_img_filter.SetInputBufferTypeToRGB()
vtk_win_to_img_filter.Update()
self.vtk_image = vtk_win_to_img_filter.GetOutput()
else:
vtk_win_to_img_filter.SetInputBufferTypeToZBuffer()
vtk_scale = vtk.vtkImageShiftScale()
vtk_scale.SetInputConnection(vtk_win_to_img_filter.GetOutputPort())
vtk_scale.SetOutputScalarTypeToUnsignedChar()
vtk_scale.SetShift(0)
vtk_scale.SetScale(-255)
vtk_scale.Update()
self.vtk_image = vtk_scale.GetOutput()
width, height, _ = self.vtk_image.GetDimensions()
self.vtk_array = self.vtk_image.GetPointData().GetScalars()
number_of_components = self.vtk_array.GetNumberOfComponents()
np_array = vtk_to_numpy(self.vtk_array).reshape(
height, width, number_of_components)
self.output = cv2.flip(np_array, flipCode=0)
return self.output
def Execute(self):
if self.Image == None:
self.PrintError('Error: No input image.')
if self.OutputType == 'uchar' and self.ShiftScale:
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputData(self.Image)
if self.WindowLevel[0] == 0.0:
scalarRange = self.Image.GetScalarRange()
scale = 255.0
if (scalarRange[1]-scalarRange[0]) > 0.0:
scale = 255.0/(scalarRange[1]-scalarRange[0])
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(scale)
else:
shiftScale.SetShift(-(self.WindowLevel[1]-self.WindowLevel[0]/2.0))
shiftScale.SetScale(255.0/self.WindowLevel[0])
shiftScale.SetOutputScalarTypeToUnsignedChar()
shiftScale.ClampOverflowOn()
shiftScale.Update()
self.Image = shiftScale.GetOutput()
else:
cast = vtk.vtkImageCast()
cast.SetInputData(self.Image)
if self.OutputType == 'float':
cast.SetOutputScalarTypeToFloat()
elif self.OutputType == 'double':
cast.SetOutputScalarTypeToDouble()
elif self.OutputType == 'uchar':
cast.SetOutputScalarTypeToUnsignedChar()
elif self.OutputType == 'short':
cast.SetOutputScalarTypeToShort()
cast.Update()
self.Image = cast.GetOutput()
def WriteTIFFImageFile(self):
if (self.OutputFileName == ''):
self.PrintError('Error: no OutputFileName.')
self.PrintLog('Writing TIFF image file.')
outputImage = self.Image
if self.Image.GetScalarTypeAsString() != 'unsigned char':
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputData(self.Image)
if self.WindowLevel[0] == 0.0:
scalarRange = self.Image.GetScalarRange()
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(255.0 / (scalarRange[1] - scalarRange[0]))
else:
shiftScale.SetShift(-(self.WindowLevel[1] -
self.WindowLevel[0] / 2.0))
shiftScale.SetScale(255.0 / self.WindowLevel[0])
shiftScale.SetOutputScalarTypeToUnsignedChar()
shiftScale.ClampOverflowOn()
shiftScale.Update()
outputImage = shiftScale.GetOutput()
writer = vtk.vtkTIFFWriter()
writer.SetInputData(outputImage)
if self.Image.GetDimensions()[2] == 1:
writer.SetFileName(self.OutputFileName)
else:
writer.SetFilePrefix(self.OutputFileName)
writer.SetFilePattern("%s%04d.tif")
writer.Write()
def getIntensityScaledData(self, data):
"""
Return the data shifted and scaled to appropriate intensity range
"""
if not self.explicitScale:
return data
if self.intensityScale == -1:
return data
if not self.shift:
self.shift = vtk.vtkImageShiftScale()
self.shift.SetOutputScalarTypeToUnsignedChar()
self.shift.SetClampOverflow(1)
self.shift.SetInputConnection(data.GetProducerPort())
# Need to call this or it will remember the whole extent it got from resampling
self.shift.UpdateWholeExtent()
if self.intensityScale:
self.shift.SetScale(self.intensityScale)
currScale = self.intensityScale
else:
minval, maxval = self.originalScalarRange
scale = 255.0 / maxval
self.shift.SetScale(scale)
currScale = scale
self.shift.SetShift(self.intensityShift)
Logging.info("Intensity shift = %d, scale = %f"%(self.intensityShift, currScale), kw="datasource")
return self.shift.GetOutput()
def convert(filepath):
filepath = "./display/"
reader = vtk.vtkDICOMImageReader() #we create a new vtkDICOMImageReader under the name of reader which we use to read the DICOM images.
reader.SetDirectoryName(filepath)
reader.Update()
image = reader.GetOutput()
shiftScaleFilter = vtkImageShiftScale()
shiftScaleFilter.SetOutputScalarTypeToUnsignedChar()
shiftScaleFilter.SetInputConnection(reader.GetOutputPort())
shiftScaleFilter.SetShift(-1.0*image.GetScalarRange()[0])
oldRange = image.GetScalarRange()[1] - image.GetScalarRange()[0]
newRange = 255
shiftScaleFilter.SetScale(newRange/oldRange)
shiftScaleFilter.Update()
writer = vtkPNGWriter()
writer.SetFileName('./display/output.png') # you give the path-filename where you want the output to be
writer.SetInputConnection(shiftScaleFilter.GetOutputPort())
writer.Write()
return 1
def avgProjectionsVtk(self, filenames , extent):
'''Returns the average of the input images
Input is passed as filenames pointing to 2D TIFF
Output is a vtkImageData
gives the same result as avgProjections within machine precision.
'''
num = len(filenames)
readers = [vtk.vtkTIFFReader() for i in range(num)]
scalers = [vtk.vtkImageShiftScale() for i in range(num)]
vois = [vtk.vtkExtractVOI() for i in range(num)]
avger = vtk.vtkImageWeightedSum()
counter = 0
for reader, voi, scaler, filename in zip(readers, vois , scalers ,filenames):
reader.SetFileName(filename)
reader.Update()
print ("reading {0}".format(filename))
voi.SetInputData(reader.GetOutput())
voi.SetVOI(extent)
voi.Update()
print ("extracting VOI")
scaler.SetInputData(voi.GetOutput())
scaler.SetOutputScalarTypeToDouble()
scaler.SetScale(1)
scaler.SetShift(0)
scaler.Update()
avger.AddInputData(scaler.GetOutput())
avger.SetWeight(counter , 1/float(num))
counter = counter + 1
print ("adding input connection {0}".format(counter))
avger.Update()
return avger.GetOutput()
def execute(self, inputs, update = 0, last = 0): """ Execute the filter with given inputs and return the output """ if not lib.ProcessingFilter.ProcessingFilter.execute(self, inputs): return None image = self.getInput(1) self.vtkfilter.SetInput(image) self.vtkfilter.SetConsiderAnisotropy(self.parameters["ConsiderAnisotropy"]) self.vtkfilter.SetAlgorithm(self.parameters["Algorithm"]) data = self.vtkfilter.GetOutput() if self.parameters["CastToUnsignedChar"]: self.vtkfilter.Update() cast = vtk.vtkImageShiftScale() x0, x1 = data.GetScalarRange() print data print "Scalar range=",x0,x1 cast.SetInput(self.vtkfilter.GetOutput()) cast.SetOutputScalarTypeToUnsignedChar() #cast.SetClampOverflow(1) cast.SetScale(255.0/x1) print "Setting scale to ", 255.0/x1 data = cast.GetOutput() if update: self.vtkfilter.Update() return data
def __init__(self, module_manager):
SimpleVTKClassModuleBase.__init__(
self, module_manager,
vtk.vtkImageShiftScale(), 'Processing.',
('vtkImageData',), ('vtkImageData',),
replaceDoc=True,
inputFunctions=None, outputFunctions=None)
def getMIP(imageData, color):
"""
A function that will take a volume and do a simple
maximum intensity projection that will be converted to a
wxBitmap
"""
maxval = imageData.GetScalarRange()[1]
imageData.SetUpdateExtent(imageData.GetWholeExtent())
if maxval > 255:
shiftscale = vtk.vtkImageShiftScale()
shiftscale.SetInputConnection(imageData.GetProducerPort())
shiftscale.SetScale(255.0 / maxval)
shiftscale.SetOutputScalarTypeToUnsignedChar()
imageData = shiftscale.GetOutput()
mip = vtkbxd.vtkImageSimpleMIP()
mip.SetInputConnection(imageData.GetProducerPort())
if color == None:
output = optimize.execute_limited(mip)
return output
if mip.GetOutput().GetNumberOfScalarComponents() == 1:
ctf = getColorTransferFunction(color)
maptocolor = vtk.vtkImageMapToColors()
maptocolor.SetInputConnection(mip.GetOutputPort())
maptocolor.SetLookupTable(ctf)
maptocolor.SetOutputFormatToRGB()
imagedata = optimize.execute_limited(maptocolor)
else:
imagedata = output = optimize.execute_limited(mip)
return imagedata
def CreateVolumeSource(self):
imageReader = vtk.vtkMetaImageReader()
imageReader.SetFileName(self.ImageFileName)
compSrc = vtk.vtkImageExtractComponents()
compSrc.SetInputConnection(imageReader.GetOutputPort())
compSrc.SetComponents(self.ComponentIndex)
compSrc.Update()
valueMin, valueMax = compSrc.GetOutput().GetPointData().GetArray(
'MetaImage').GetValueRange()
valueMin = 0.0
toUnsignedShort = vtk.vtkImageShiftScale()
toUnsignedShort.ClampOverflowOn()
toUnsignedShort.SetShift(-valueMin)
if valueMax - valueMin != 0:
toUnsignedShort.SetScale(
512.0 /
(valueMax -
valueMin)) #randomly cause error that "zerodivision"
toUnsignedShort.SetInputConnection(compSrc.GetOutputPort())
toUnsignedShort.SetOutputScalarTypeToUnsignedShort()
return toUnsignedShort
def _handleFailedImage(idiff, pngr, img_fname):
"""Writes all the necessary images when an image comparison
failed."""
f_base, f_ext = os.path.splitext(img_fname)
# write the difference image gamma adjusted for the dashboard.
gamma = vtk.vtkImageShiftScale()
gamma.SetInputConnection(idiff.GetOutputPort())
gamma.SetShift(0)
gamma.SetScale(10)
pngw = vtk.vtkPNGWriter()
pngw.SetFileName(_getTempImagePath(f_base + ".diff.png"))
pngw.SetInputConnection(gamma.GetOutputPort())
pngw.Write()
# Write out the image that was generated. Write it out as full so that
# it may be used as a baseline image if the tester deems it valid.
pngw.SetInputConnection(idiff.GetInputConnection(0,0))
pngw.SetFileName(_getTempImagePath(f_base + ".png"))
pngw.Write()
# write out the valid image that matched.
pngw.SetInputConnection(idiff.GetInputConnection(1,0))
pngw.SetFileName(_getTempImagePath(f_base + ".valid.png"))
pngw.Write()
def setInputAsNumpy(self, numpyarray):
if (len(numpy.shape(numpyarray)) == 3):
doubleImg = vtk.vtkImageData()
shape = numpy.shape(numpyarray)
doubleImg.SetDimensions(shape[0], shape[1], shape[2])
doubleImg.SetOrigin(0, 0, 0)
doubleImg.SetSpacing(1, 1, 1)
doubleImg.SetExtent(0, shape[0] - 1, 0, shape[1] - 1, 0,
shape[2] - 1)
doubleImg.AllocateScalars(vtk.VTK_DOUBLE, 1)
for i in range(shape[0]):
for j in range(shape[1]):
for k in range(shape[2]):
doubleImg.SetScalarComponentFromDouble(
i, j, k, 0, numpyarray[i][j][k])
# rescale to appropriate VTK_UNSIGNED_SHORT
stats = vtk.vtkImageAccumulate()
stats.SetInputData(doubleImg)
stats.Update()
iMin = stats.GetMin()[0]
iMax = stats.GetMax()[0]
scale = vtk.VTK_UNSIGNED_SHORT_MAX / (iMax - iMin)
shiftScaler = vtk.vtkImageShiftScale()
shiftScaler.SetInputData(doubleImg)
shiftScaler.SetScale(scale)
shiftScaler.SetShift(iMin)
shiftScaler.SetOutputScalarType(vtk.VTK_UNSIGNED_SHORT)
shiftScaler.Update()
self.img3D = shiftScaler.GetOutput()
def shiftscale_uchar(image, ww=300.0, wc=40.0):
"""
Parameters
----------
image : vtk data
ww : float
window width
wc : float
window center
Returns
-------
shift_data : vkt uchar data
"""
shift_scale = vtk.vtkImageShiftScale()
shift_scale.SetInputData(image.GetOutput())
shift_scale.SetShift(-(wc - 0.5 * ww))
shift_scale.SetScale(255.0 / ww)
shift_scale.SetOutputScalarTypeToUnsignedChar()
shift_scale.ClampOverflowOn()
shift_scale.Update()
return shift_scale
def WriteTIFFImageFile(self):
if (self.OutputFileName == ''):
self.PrintError('Error: no OutputFileName.')
self.PrintLog('Writing TIFF image file.')
outputImage = self.Image
if self.Image.GetScalarTypeAsString() != 'unsigned char':
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputData(self.Image)
if self.WindowLevel[0] == 0.0:
scalarRange = self.Image.GetScalarRange()
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(255.0/(scalarRange[1]-scalarRange[0]))
else:
shiftScale.SetShift(-(self.WindowLevel[1]-self.WindowLevel[0]/2.0))
shiftScale.SetScale(255.0/self.WindowLevel[0])
shiftScale.SetOutputScalarTypeToUnsignedChar()
shiftScale.ClampOverflowOn()
shiftScale.Update()
outputImage = shiftScale.GetOutput()
writer = vtk.vtkTIFFWriter()
writer.SetInputData(outputImage)
if self.Image.GetDimensions()[2] == 1:
writer.SetFileName(self.OutputFileName)
else:
writer.SetFilePrefix(self.OutputFileName)
writer.SetFilePattern("%s%04d.tif")
writer.Write()
def SetupTextureMapper(self):
if not self.GetInput():
return
mapper3D = vtk.vtkVolumeTextureMapper3D.SafeDownCast(self.__VolumeTextureMapper)
if mapper3D and not self.GetRenderWindow().GetNeverRendered():
if not mapper3D.IsRenderSupported(self.__VolumeProperty):
# try the ATI fragment program implementation
mapper3D.SetPreferredMethodToFragmentProgram()
if not mapper3D.IsRenderSupported(self.__VolumeProperty):
print "Warning: 3D texture volume rendering is not supported by your hardware, switching to 2D texture rendering."
newMapper = vtk.vtkVolumeTextureMapper2D()
newMapper.CroppingOn()
newMapper.SetCroppingRegionFlags (0x7ffdfff)
range = self.GetInput().GetScalarRange()
shift = 0 - range[0]
scale = 65535.0 / (range[1]-range[0])
scaler = vtk.vtkImageShiftScale()
scaler.SetInput(self.GetInput())
scaler.SetShift(shift)
scaler.SetScale(scale)
scaler.SetOutputScalarTypeToUnsignedShort()
scaler.Update()
newMapper.SetInput(scaler.GetOutput())
# del scaler
self.__Callback.SetVolumeMapper(newMapper)
self.__VolumeMapper = newMapper
self.__VolumeMapper.SetMapper(newMapper)
def highlight_voxels_3D(self, coords):
self.viewer.ren_iso.RemoveVolume(self.viewer.vol)
newimage = vtk.vtkImageData()
newimage.SetSpacing(self.viewer.volumedata.GetSpacing())
newimage.SetOrigin(self.viewer.volumedata.GetOrigin())
newimage.SetDimensions(self.viewer.volumedata.GetDimensions())
newimage.SetExtent(self.viewer.volumedata.GetExtent())
newimage.SetNumberOfScalarComponents(1)
newimage.SetScalarTypeToDouble()
newimage.AllocateScalars()
for p in coords:
newimage.SetScalarComponentFromDouble(p[0], p[1], p[2], 0, p[3])
shift_scale = vtk.vtkImageShiftScale()
shift_scale.SetInput(newimage)
shift_scale.SetOutputScalarTypeToUnsignedChar()
shift_scale.Update()
flipYFilter = vtk.vtkImageFlip()
flipYFilter.SetFilteredAxis(1)
flipYFilter.SetInput(shift_scale.GetOutput())
flipYFilter.Update()
self.viewer.volMapper.SetInput(flipYFilter.GetOutput())
self.viewer.ren_iso.AddVolume(self.viewer.vol)
self.viewer.refresh_3d()
def execute(self, inputs, update=0, last=0):
"""
Execute the filter with given inputs and return the output
"""
if not lib.ProcessingFilter.ProcessingFilter.execute(self, inputs):
return None
image = self.getInput(1)
self.vtkfilter.SetInput(image)
self.vtkfilter.SetConsiderAnisotropy(
self.parameters["ConsiderAnisotropy"])
self.vtkfilter.SetAlgorithm(self.parameters["Algorithm"])
data = self.vtkfilter.GetOutput()
if self.parameters["CastToUnsignedChar"]:
self.vtkfilter.Update()
cast = vtk.vtkImageShiftScale()
x0, x1 = data.GetScalarRange()
print data
print "Scalar range=", x0, x1
cast.SetInput(self.vtkfilter.GetOutput())
cast.SetOutputScalarTypeToUnsignedChar()
#cast.SetClampOverflow(1)
cast.SetScale(255.0 / x1)
print "Setting scale to ", 255.0 / x1
data = cast.GetOutput()
if update:
self.vtkfilter.Update()
return data
def Execute(self):
if self.Image == None:
self.PrintError('Error: No input image.')
if self.OutputType == 'uchar' and self.ShiftScale:
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputData(self.Image)
if self.WindowLevel[0] == 0.0:
scalarRange = self.Image.GetScalarRange()
scale = 255.0
if (scalarRange[1]-scalarRange[0]) > 0.0:
scale = 255.0/(scalarRange[1]-scalarRange[0])
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(scale)
else:
shiftScale.SetShift(-(self.WindowLevel[1]-self.WindowLevel[0]/2.0))
shiftScale.SetScale(255.0/self.WindowLevel[0])
shiftScale.SetOutputScalarTypeToUnsignedChar()
shiftScale.ClampOverflowOn()
shiftScale.Update()
self.Image = shiftScale.GetOutput()
else:
cast = vtk.vtkImageCast()
cast.SetInputData(self.Image)
if self.OutputType == 'float':
cast.SetOutputScalarTypeToFloat()
elif self.OutputType == 'double':
cast.SetOutputScalarTypeToDouble()
elif self.OutputType == 'uchar':
cast.SetOutputScalarTypeToUnsignedChar()
elif self.OutputType == 'short':
cast.SetOutputScalarTypeToShort()
cast.Update()
self.Image = cast.GetOutput()
def DownsampleImage(self, image, nbits=8):
"""Downsamples an image"""
image.SetReleaseDataFlag(1)
# get the min and max values from the image
(minval, maxval) = image.GetScalarRange()
# create an 8-bit version of this image
_filter = vtk.vtkImageShiftScale()
_filter.SetInput(image.GetRealImage())
_filter.SetShift(-minval)
try:
if nbits == 8:
_filter.SetScale(255.0 / (maxval - minval))
elif nbits == 16:
_filter.SetScale(65535.0 / (maxval - minval))
except ZeroDivisionError:
logging.exception("DownsampleImage")
_filter.SetScale(1.0)
if nbits == 8:
_filter.SetOutputScalarTypeToUnsignedChar()
elif nbits == 16:
_filter.SetOutputScalarTypeToShort()
elif nbits == 32:
_filter.SetOutputScalarTypeToFloat()
elif nbits == 64:
_filter.SetOutputScalarTypeToDouble()
_filter.AddObserver('ProgressEvent', self.HandleVTKProgressEvent)
_filter.SetProgressText("Downsampling to %d-bit..." % nbits)
logging.info("Image downsampled to {0}-bit".format(nbits))
_filter.Update()
return MVImage.MVImage(_filter.GetOutputPort(), input=image)
def Execute(self):
if self.Image == None:
self.PrintError("Error: No input image.")
if self.OutputType == "uchar" and self.ShiftScale:
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInput(self.Image)
if self.WindowLevel[0] == 0.0:
scalarRange = self.Image.GetScalarRange()
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(255.0 / (scalarRange[1] - scalarRange[0]))
else:
shiftScale.SetShift(-(self.WindowLevel[1] - self.WindowLevel[0] / 2.0))
shiftScale.SetScale(255.0 / self.WindowLevel[0])
shiftScale.SetOutputScalarTypeToUnsignedChar()
shiftScale.ClampOverflowOn()
shiftScale.Update()
self.Image = shiftScale.GetOutput()
else:
cast = vtk.vtkImageCast()
cast.SetInput(self.Image)
if self.OutputType == "float":
cast.SetOutputScalarTypeToFloat()
elif self.OutputType == "double":
cast.SetOutputScalarTypeToDouble()
elif self.OutputType == "uchar":
cast.SetOutputScalarTypeToUnsignedChar()
elif self.OutputType == "short":
cast.SetOutputScalarTypeToShort()
cast.Update()
self.Image = cast.GetOutput()
def createImageData():
sphere = vtk.vtkSphere()
sphere.SetRadius(0.1)
sphere.SetCenter(0.0, 0.0, 0.0)
sampleFunction = vtk.vtkSampleFunction()
sampleFunction.SetImplicitFunction(sphere)
sampleFunction.SetOutputScalarTypeToDouble()
sampleFunction.SetSampleDimensions(127, 127, 127)
sampleFunction.SetModelBounds(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0)
sampleFunction.SetCapping(False)
sampleFunction.SetComputeNormals(False)
sampleFunction.SetScalarArrayName("values")
sampleFunction.Update()
a = sampleFunction.GetOutput().GetPointData().GetScalars("values")
range = a.GetRange()
print range
t = vtk.vtkImageShiftScale()
t.SetInputConnection(sampleFunction.GetOutputPort())
t.SetShift(-range[0])
magnitude = range[1] - range[0]
if magnitude == 0.0:
magnitude = 1.0
t.SetScale(255.0 / magnitude)
t.SetOutputScalarTypeToUnsignedChar()
t.Update()
return t.GetOutput()
def diff(im1, im2):
#Takes the differences of two aim files and adds them together
shift1 = vtk.vtkImageShiftScale()
shift1.SetInputConnection(im1.GetOutputPort())
shift1.SetOutputScalarTypeToChar()
shift2 = vtk.vtkImageShiftScale()
shift2.SetInputConnection(im2.GetOutputPort())
shift2.SetOutputScalarTypeToChar()
box1 = vtk.vtkImageReslice()
box1.SetInput(shift1.GetOutput())
box1.SetResliceAxesOrigin(im2.GetOutput().GetOrigin())
box1.Update()
sub1 = vtk.vtkImageMathematics()
sub1.SetInput1(box1.GetOutput())
sub1.SetInput2(shift2.GetOutput())
sub1.SetOperationToSubtract()
sub2 = vtk.vtkImageMathematics()
sub2.SetInput1(shift2.GetOutput())
sub2.SetInput2(shift1.GetOutput())
sub2.SetOperationToSubtract()
step1 = vtk.vtkImageMathematics()
step1.SetInput1(sub1.GetOutput())
step1.SetConstantC(-127)
step1.SetConstantK(0)
step1.SetOperationToReplaceCByK()
step2 = vtk.vtkImageMathematics()
step2.SetInput1(sub2.GetOutput())
step2.SetConstantC(-127)
step2.SetConstantK(0)
step2.SetOperationToReplaceCByK()
add = vtk.vtkImageMathematics()
add.SetInput1(step2.GetOutput())
add.SetInput2(step1.GetOutput())
add.SetOperationToAdd()
return add
def save_frame_depth(self, path):
#setup camera
camera = vtkCamera()
camera.SetPosition(self.cx, self.cy, self.cz)
camera.SetFocalPoint(self.fx, self.fy, self.fz)
camera.SetViewUp(self.ux, self.uy, self.uz)
camera.SetViewAngle(self.fovy)
#setup renderer
renderer = vtkRenderer()
renderWindow = vtkRenderWindow()
renderWindow.SetOffScreenRendering(1)
renderWindow.AddRenderer(renderer)
renderWindow.SetSize(self.w, self.h)
for i in xrange(-1, self.expert.nr_obstacles_c()):
vss, nss, iss = self.save_frame_mesh(i)
#geometry
pts = vtkPoints()
for i in xrange(len(vss)):
pts.InsertNextPoint(vss[i][0], vss[i][1], vss[i][2])
tris = vtkCellArray()
for i in xrange(len(iss)):
triangle = vtkTriangle()
triangle.GetPointIds().SetId(0, iss[i][0])
triangle.GetPointIds().SetId(1, iss[i][1])
triangle.GetPointIds().SetId(2, iss[i][2])
tris.InsertNextCell(triangle)
poly = vtkPolyData()
poly.SetPoints(pts)
poly.SetPolys(tris)
#actor
mapper = vtkPolyDataMapper()
mapper.SetInput(poly)
actor = vtkActor()
actor.SetMapper(mapper)
renderer.AddActor(actor)
renderer.SetBackground(self.bk_r, self.bk_g, self.bk_b)
renderer.SetActiveCamera(camera)
renderWindow.Render()
#output options
windowToImageFilter = vtkWindowToImageFilter()
windowToImageFilter.SetInput(renderWindow)
windowToImageFilter.SetMagnification(1)
windowToImageFilter.SetInputBufferTypeToZBuffer()
#Extract z buffer value
windowToImageFilter.Update()
#scale and shift
scale = vtkImageShiftScale()
scale.SetOutputScalarTypeToUnsignedChar()
scale.SetInputConnection(windowToImageFilter.GetOutputPort())
scale.SetShift(0)
scale.SetScale(-255)
#output
writer = vtkBMPWriter()
writer.SetFileName(path)
writer.SetInputConnection(scale.GetOutputPort())
writer.Write()
def Rescale(combo, ZeroPoint):
"""Rescale to legal pixel values [-1, 1] --> [0, MaxScaledValue]"""
scaled = vtk.vtkImageShiftScale()
scaled.SetInputConnection(combo.GetOutputPort())
scaled.SetShift(1.)
scaled.SetScale(ZeroPoint + 1)
scaled.SetOutputScalarTypeToUnsignedShort()
return scaled
def __init__(self, module_manager):
SimpleVTKClassModuleBase.__init__(self,
module_manager,
vtk.vtkImageShiftScale(),
'Processing.', ('vtkImageData', ),
('vtkImageData', ),
replaceDoc=True,
inputFunctions=None,
outputFunctions=None)
def Rescale(combo, ZeroPoint):
"""Rescale to legal pixel values [-1, 1] --> [0, MaxScaledValue]"""
scaled = vtk.vtkImageShiftScale()
scaled.SetInputConnection(combo.GetOutputPort())
scaled.SetShift(1.)
scaled.SetScale(ZeroPoint + 1)
scaled.SetOutputScalarTypeToUnsignedShort()
return scaled
def ipl_add_aims(image_in1, image_in2):
ipl_add_aims_settings()
extent1 = image_in1.GetExtent()
voi1 = vtk.vtkExtractVOI()
voi1.SetInput(image_in1)
voi1.SetVOI(extent1[0], extent1[1], extent1[2], extent1[3], extent1[4],
extent1[5])
extent2 = image_in2.GetExtent()
voi2 = vtk.vtkExtractVOI()
voi2.SetInput(image_in2)
voi2.SetVOI(extent2[0], extent2[1], extent2[2], extent2[3], extent2[4],
extent2[5])
shift1 = vtk.vtkImageShiftScale()
shift1.SetInputConnection(voi1.GetOutputPort())
shift1.SetOutputScalarTypeToChar()
shift1.Update()
shift2 = vtk.vtkImageShiftScale()
shift2.SetInputConnection(voi2.GetOutputPort())
shift2.SetOutputScalarTypeToChar()
shift2.Update()
add = vtk.vtkImageMathematics()
add.SetInput1(shift1.GetOutput())
add.SetInput2(shift2.GetOutput())
add.SetOperationToAdd()
add.Update()
temp = vtk.vtkImageMathematics()
temp.SetInput1(add.GetOutput())
temp.SetConstantC(-2)
temp.SetConstantK(127)
temp.SetOperationToReplaceCByK()
temp.Update()
image_out = temp.GetOutput()
return image_out
def __init__(self):
"""
Initialization
"""
lib.ProcessingFilter.ProcessingFilter.__init__(self, (1, 1))
self.vtkfilter = vtk.vtkImageShiftScale()
self.vtkfilter.AddObserver("ProgressEvent", lib.messenger.send)
lib.messenger.connect(self.vtkfilter, 'ProgressEvent', self.updateProgress)
self.eventDesc = "Applying a shift and scale to image intensity"
self.descs = {"Shift": "Shift:", "Scale": "Scale:", "AutoScale": "Scale to max range of data type", "NoOverflow":"Prevent over/underflow", "Scale8bit": "Scale to 8-bit range (0-255)"}
self.filterDesc = "Shifts pixel/voxel intensities and then scales them, corresponding roughly to the adjustment of brightness and contrast, respectively\nInput: Grayscale image\nOutput: Grayscale image"
def __cvt2ubyte(self, reader):
reader.Update()
self.sliceNum = reader.GetOutput().GetDimensions()[2]
self.sliceIdx = self.sliceNum / 2
min, max = reader.GetOutput().GetScalarRange()
data = vtk.vtkImageShiftScale()
data.SetInputConnection(reader.GetOutputPort())
data.SetShift(-1.0 * min)
data.SetScale(255.0 / (max - min))
data.SetOutputScalarTypeToUnsignedChar()
return data
def __init__(self,renWin):
self.renWin = renWin
self.zBuffFilter = vtk.vtkWindowToImageFilter()
self.zBuffFilter.SetInput(self.renWin)
self.zBuffFilter.SetInputBufferTypeToZBuffer()
self.scaledZBuff = vtk.vtkImageShiftScale()
self.scaledZBuff.SetOutputScalarTypeToUnsignedChar()
self.scaledZBuff.SetInputConnection(self.zBuffFilter.GetOutputPort())
self.scaledZBuff.SetShift(0)
self.scaledZBuff.SetScale(255)
def __init__(self, renWin):
self.renWin = renWin
self.zBuffFilter = vtk.vtkWindowToImageFilter()
self.zBuffFilter.SetInput(self.renWin)
self.zBuffFilter.SetMagnification(1)
self.zBuffFilter.SetInputBufferTypeToZBuffer()
self.scaledZBuff = vtk.vtkImageShiftScale()
self.scaledZBuff.SetOutputScalarTypeToUnsignedChar()
self.scaledZBuff.SetInputConnection(self.zBuffFilter.GetOutputPort())
self.scaledZBuff.SetShift(0)
self.scaledZBuff.SetScale(-255)
def __init__(self):
"""
Initialization
"""
lib.ProcessingFilter.ProcessingFilter.__init__(self, (1, 1))
self.vtkfilter = vtk.vtkImageShiftScale()
self.vtkfilter.AddObserver("ProgressEvent", lib.messenger.send)
lib.messenger.connect(self.vtkfilter, 'ProgressEvent', self.updateProgress)
self.eventDesc = "Applying an Automatic background subtraction"
self.descs = {"SmallestNonZeroValue":"Use smallest non-zero value as background",
"FirstPeak":"First peak in histogram","MostCommon":"Most common value"}
self.filterDesc = "Removes background by subtracting a certain value from the intensity of every pixel/voxel\nInput: Grayscale image\nOutput: Grayscale image"
def __cvt2ubyte(self, reader):
reader.Update()
x, y, z = reader.GetOutput().GetDimensions()
self.orientation_dict = { #sliceNum, sliceIdx
0: [lambda viewer: viewer.SetSliceOrientationToXY, z, z / 2],
1: [lambda viewer: viewer.SetSliceOrientationToYZ, x, x / 2],
2: [lambda viewer: viewer.SetSliceOrientationToXZ, y, y / 2]
}
min, max = reader.GetOutput().GetScalarRange()
data = vtk.vtkImageShiftScale()
data.SetInputConnection(reader.GetOutputPort())
data.SetShift(-1.0 * min)
data.SetScale(255.0 / (max - min + 0.00001))
data.SetOutputScalarTypeToUnsignedChar()
return data
def CreateVolumeSource(self):
imageReader = vtk.vtkMetaImageReader()
imageReader.SetFileName(self.ImageFileName)
imageReader.Update()
valueMin, valueMax = imageReader.GetOutput().GetPointData(
).GetArray('MetaImage').GetValueRange()
toUnsignedShort = vtk.vtkImageShiftScale()
toUnsignedShort.ClampOverflowOn()
toUnsignedShort.SetShift(-valueMin)
toUnsignedShort.SetScale(512.0 / (valueMax - valueMin))
toUnsignedShort.SetInputConnection(imageReader.GetOutputPort())
toUnsignedShort.SetOutputScalarTypeToUnsignedShort()
return toUnsignedShort
def _handleFailedImage(idiff, pngr, img_fname):
"""Writes all the necessary images when an image comparison
failed."""
f_base, f_ext = os.path.splitext(img_fname)
# write out the difference file in full.
pngw = vtk.vtkPNGWriter()
pngw.SetFileName(_getTempImagePath(f_base + ".diff.png"))
pngw.SetInput(idiff.GetOutput())
pngw.Write()
# write the difference image scaled and gamma adjusted for the
# dashboard.
sz = pngr.GetOutput().GetDimensions()
if sz[1] <= 250.0:
mag = 1.0
else:
mag = 250.0 / sz[1]
shrink = vtk.vtkImageResample()
shrink.SetInput(idiff.GetOutput())
shrink.InterpolateOn()
shrink.SetAxisMagnificationFactor(0, mag)
shrink.SetAxisMagnificationFactor(1, mag)
gamma = vtk.vtkImageShiftScale()
gamma.SetInput(shrink.GetOutput())
gamma.SetShift(0)
gamma.SetScale(10)
jpegw = vtk.vtkJPEGWriter()
jpegw.SetFileName(_getTempImagePath(f_base + ".diff.small.jpg"))
jpegw.SetInput(gamma.GetOutput())
jpegw.SetQuality(85)
jpegw.Write()
# write out the image that was generated.
shrink.SetInput(idiff.GetInput())
jpegw.SetInput(shrink.GetOutput())
jpegw.SetFileName(_getTempImagePath(f_base + ".test.small.jpg"))
jpegw.Write()
# write out the valid image that matched.
shrink.SetInput(idiff.GetImage())
jpegw.SetInput(shrink.GetOutput())
jpegw.SetFileName(_getTempImagePath(f_base + ".small.jpg"))
jpegw.Write()
def _handleFailedImage(idiff, pngr, img_fname):
"""Writes all the necessary images when an image comparison
failed."""
f_base, f_ext = os.path.splitext(img_fname)
# write out the difference file in full.
pngw = vtk.vtkPNGWriter()
pngw.SetFileName(_getTempImagePath(f_base + ".diff.png"))
pngw.SetInput(idiff.GetOutput())
pngw.Write()
# write the difference image scaled and gamma adjusted for the
# dashboard.
sz = pngr.GetOutput().GetDimensions()
if sz[1] <= 250.0:
mag = 1.0
else:
mag = 250.0/sz[1]
shrink = vtk.vtkImageResample()
shrink.SetInput(idiff.GetOutput())
shrink.InterpolateOn()
shrink.SetAxisMagnificationFactor(0, mag)
shrink.SetAxisMagnificationFactor(1, mag)
gamma = vtk.vtkImageShiftScale()
gamma.SetInput(shrink.GetOutput())
gamma.SetShift(0)
gamma.SetScale(10)
jpegw = vtk.vtkJPEGWriter()
jpegw.SetFileName(_getTempImagePath(f_base + ".diff.small.jpg"))
jpegw.SetInput(gamma.GetOutput())
jpegw.SetQuality(85)
jpegw.Write()
# write out the image that was generated.
shrink.SetInput(idiff.GetInput())
jpegw.SetInput(shrink.GetOutput())
jpegw.SetFileName(_getTempImagePath(f_base + ".test.small.jpg"))
jpegw.Write()
# write out the valid image that matched.
shrink.SetInput(idiff.GetImage())
jpegw.SetInput(shrink.GetOutput())
jpegw.SetFileName(_getTempImagePath(f_base + ".small.jpg"))
jpegw.Write()
def dicom_to_png(imagedata, dir):
logging.debug("In data.dicom_to_png()")
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetOutputScalarTypeToUnsignedShort()
shiftScale.SetInput(imagedata)
inp = shiftScale.GetInput()
minv, maxv = inp.GetScalarRange()
shiftScale.SetShift(-minv)
shiftScale.SetScale(65535 / (maxv - minv))
w = vtk.vtkPNGWriter()
w.SetFileDimensionality(3)
w.SetInput(shiftScale.GetOutput())
w.SetFilePattern("%s%d.png")
if not os.path.exists(dir):
os.mkdir(dir)
w.SetFilePrefix(dir)
w.Write()
def Display(self):
wholeExtent = self.Image.GetWholeExtent()
self.SliceVOI[0] = wholeExtent[0]
self.SliceVOI[1] = wholeExtent[1]
self.SliceVOI[2] = wholeExtent[2]
self.SliceVOI[3] = wholeExtent[3]
self.SliceVOI[4] = wholeExtent[4]
self.SliceVOI[5] = wholeExtent[5]
self.SliceVOI[self.Axis*2] = wholeExtent[self.Axis*2]
self.SliceVOI[self.Axis*2+1] = wholeExtent[self.Axis*2]
range = self.Image.GetScalarRange()
imageShifter = vtk.vtkImageShiftScale()
imageShifter.SetInput(self.Image)
imageShifter.SetShift(-1.0*range[0])
imageShifter.SetScale(255.0/(range[1]-range[0]))
imageShifter.SetOutputScalarTypeToUnsignedChar()
widgetImage = imageShifter.GetOutput()
self.ImageActor.SetInput(widgetImage)
self.ImageActor.SetDisplayExtent(self.SliceVOI)
self.vmtkRenderer.Renderer.AddActor(self.ImageActor)
self.ImageTracerWidget.SetCaptureRadius(1.5)
self.ImageTracerWidget.SetViewProp(self.ImageActor)
self.ImageTracerWidget.SetInput(widgetImage)
self.ImageTracerWidget.ProjectToPlaneOn()
self.ImageTracerWidget.SetProjectionNormal(self.Axis)
self.ImageTracerWidget.PlaceWidget()
self.ImageTracerWidget.SetAutoClose(self.AutoClose)
self.ImageTracerWidget.AddObserver("StartInteractionEvent",self.SetWidgetProjectionPosition)
self.ImageTracerWidget.AddObserver("EndInteractionEvent",self.GetLineFromWidget)
interactorStyle = vtk.vtkInteractorStyleImage()
self.vmtkRenderer.RenderWindowInteractor.SetInteractorStyle(interactorStyle)
self.vmtkRenderer.Render()
def __init__(self, module_manager):
# call parent constructor
ModuleBase.__init__(self, module_manager)
# ctor for this specific mixin
# FilenameViewModuleMixin.__init__(self)
self._shiftScale = vtk.vtkImageShiftScale()
self._shiftScale.SetOutputScalarTypeToUnsignedShort()
module_utils.setup_vtk_object_progress(
self, self._shiftScale,
'Converting input to unsigned short.')
self._writer = vtk.vtkPNGWriter()
self._writer.SetFileDimensionality(3)
self._writer.SetInput(self._shiftScale.GetOutput())
module_utils.setup_vtk_object_progress(
self, self._writer, 'Writing PNG file(s)')
self._config.filePattern = '%d.png'
configList = [
('File pattern:', 'filePattern', 'base:str', 'filebrowser',
'Filenames will be built with this. See module help.',
{'fileMode' : wx.OPEN,
'fileMask' :
'PNG files (*.png)|*.png|All files (*.*)|*.*'})]
ScriptedConfigModuleMixin.__init__(
self, configList,
{'Module (self)' : self,
'vtkPNGWriter' : self._writer})
self.sync_module_logic_with_config()
def execute(self, inputs, update = 0, last = 0): """ Execute the filter with given inputs and return the output """ if not lib.ProcessingFilter.ProcessingFilter.execute(self, inputs): return None roi = self.parameters["ROI"][1] scripting.wantWholeDataset = 1 imagedata = self.getInput(1) imagedata.SetUpdateExtent(imagedata.GetWholeExtent()) imagedata.Update() itkOrig = self.convertVTKtoITK(imagedata) itkOrig.DisconnectPipeline() mx, my, mz = self.dataUnit.getDimensions() n, maskImage = lib.ImageOperations.getMaskFromROIs([roi], mx, my, mz) itkLabel = self.convertVTKtoITK(maskImage) itkLabel = self.castITKImage(itkLabel, itkOrig) #vtkToItk2 = itk.VTKImageToImageFilter.IUC3.New() #vtkToItk2.SetInput(maskImage) #itkLabel = vtkToItk2.GetOutput() #itkLabel.Update() labelStats = itk.LabelStatisticsImageFilter[itkOrig, itkLabel].New() labelStats.SetInput(0, itkOrig) labelStats.SetInput(1, itkLabel) labelStats.Update() avgint = labelStats.GetMean(255) print "Subtract from image:",avgint shift = vtk.vtkImageShiftScale() shift.SetInput(imagedata) shift.SetClampOverflow(1) shift.SetScale(1) shift.SetShift(-avgint) return shift.GetOutput()
def getDataSet(self, i, raw = 0): """ Returns the DataSet at the specified index Parameters: i The index """ data = self.getTimepoint(i) data = self.getResampledData(data, i) if not self.shift: self.shift = vtk.vtkImageShiftScale() self.shift.SetOutputScalarTypeToUnsignedChar() self.shift.SetInput(data) x0, x1 = data.GetScalarRange() print "Scalar range=", x0, x1 if not x1: x1 = 1 scale = 255.0/x1 if scale: self.shift.SetScale(scale) self.shift.Update() data = self.shift.GetOutput() data.ReleaseDataFlagOff() return data
def Get_filter(self):
x1 = float(self.gui.m_textCtrlOldValue1.GetValue())
y1 = float(self.gui.m_textCtrlOldValue2.GetValue())
x2 = float(self.gui.m_textCtrlNewValue1.GetValue())
y2 = float(self.gui.m_textCtrlNewValue2.GetValue())
if x1 == x2 and y1 == y2:
logging.info(
"Current values will have no effect.")
return None
if x1 == y1 or x2 == y2:
logging.info("Cannot satisfy these shift/scale")
return None
shift = x2 - x1
scale = (y2 - x2) / (y1 - x1)
_type = [vtk.VTK_CHAR,
vtk.VTK_UNSIGNED_CHAR,
vtk.VTK_SHORT,
vtk.VTK_UNSIGNED_SHORT,
vtk.VTK_INT,
vtk.VTK_FLOAT,
vtk.VTK_DOUBLE][self.gui.m_choiceScalarType.GetSelection()]
_filter = vtk.vtkImageShiftScale()
_filter.SetInput(component.getUtility(ICurrentImage).GetRealImage())
_filter.SetOutputScalarType(_type)
_filter.SetScale(scale)
_filter.SetShift(shift)
_filter.SetClampOverflow(int(
self.gui.m_checkBoxClampOverflow.GetValue()))
return _filter
def testAllBlendsFloat(self):
# This script blends images that consist of float data
renWin = vtk.vtkRenderWindow()
renWin.SetSize(512, 256)
# Image pipeline
inputImage = vtk.vtkTIFFReader()
inputImage.SetFileName(VTK_DATA_ROOT + "/Data/beach.tif")
# "beach.tif" image contains ORIENTATION tag which is
# ORIENTATION_TOPLEFT (row 0 top, col 0 lhs) type. The TIFF
# reader parses this tag and sets the internal TIFF image
# orientation accordingly. To overwrite this orientation with a vtk
# convention of ORIENTATION_BOTLEFT (row 0 bottom, col 0 lhs ), invoke
# SetOrientationType method with parameter value of 4.
inputImage.SetOrientationType(4)
inputImage2 = vtk.vtkBMPReader()
inputImage2.SetFileName(VTK_DATA_ROOT + "/Data/masonry.bmp")
# shrink the images to a reasonable size
shrink1 = vtk.vtkImageShrink3D()
shrink1.SetInputConnection(inputImage.GetOutputPort())
shrink1.SetShrinkFactors(2, 2, 1)
shrink2 = vtk.vtkImageShrink3D()
shrink2.SetInputConnection(inputImage2.GetOutputPort())
shrink2.SetShrinkFactors(2, 2, 1)
color = vtk.vtkImageShiftScale()
color.SetOutputScalarTypeToFloat()
color.SetShift(0)
color.SetScale(1.0 / 255)
color.SetInputConnection(shrink1.GetOutputPort())
backgroundColor = vtk.vtkImageShiftScale()
backgroundColor.SetOutputScalarTypeToFloat()
backgroundColor.SetShift(0)
backgroundColor.SetScale(1.0 / 255)
backgroundColor.SetInputConnection(shrink2.GetOutputPort())
# create a greyscale version
luminance = vtk.vtkImageLuminance()
luminance.SetInputConnection(color.GetOutputPort())
backgroundLuminance = vtk.vtkImageLuminance()
backgroundLuminance.SetInputConnection(backgroundColor.GetOutputPort())
# create an alpha mask
alpha = vtk.vtkImageThreshold()
alpha.SetInputConnection(luminance.GetOutputPort())
alpha.ThresholdByLower(0.9)
alpha.SetInValue(1.0)
alpha.SetOutValue(0.0)
# make luminanceAlpha and colorAlpha versions
luminanceAlpha = vtk.vtkImageAppendComponents()
luminanceAlpha.AddInputConnection(luminance.GetOutputPort())
luminanceAlpha.AddInputConnection(alpha.GetOutputPort())
colorAlpha = vtk.vtkImageAppendComponents()
colorAlpha.AddInputConnection(color.GetOutputPort())
colorAlpha.AddInputConnection(alpha.GetOutputPort())
foregrounds = ["luminance", "luminanceAlpha", "color", "colorAlpha"]
backgrounds = ["backgroundColor", "backgroundLuminance"]
deltaX = 1.0 / 4.0
deltaY = 1.0 / 2.0
blend = dict()
mapper = dict()
actor = dict()
imager = dict()
for row, bg in enumerate(backgrounds):
for column, fg in enumerate(foregrounds):
blend.update({bg:{fg:vtk.vtkImageBlend()}})
blend[bg][fg].AddInputConnection(eval(bg + '.GetOutputPort()'))
if bg == "backgroundColor" or fg == "luminance" or fg == "luminanceAlpha":
blend[bg][fg].AddInputConnection(eval(fg + '.GetOutputPort()'))
blend[bg][fg].SetOpacity(1, 0.8)
mapper.update({bg:{fg:vtk.vtkImageMapper()}})
mapper[bg][fg].SetInputConnection(blend[bg][fg].GetOutputPort())
mapper[bg][fg].SetColorWindow(1.0)
mapper[bg][fg].SetColorLevel(0.5)
actor.update({bg:{fg:vtk.vtkActor2D()}})
actor[bg][fg].SetMapper(mapper[bg][fg])
imager.update({bg:{fg:vtk.vtkRenderer()}})
imager[bg][fg].AddActor2D(actor[bg][fg])
imager[bg][fg].SetViewport(column * deltaX, row * deltaY, (column + 1) * deltaX, (row + 1) * deltaY)
renWin.AddRenderer(imager[bg][fg])
# render and interact with data
iRen = vtk.vtkRenderWindowInteractor()
iRen.SetRenderWindow(renWin);
renWin.Render()
img_file = "TestAllBlendsFloat.png"
vtk.test.Testing.compareImage(iRen.GetRenderWindow(), vtk.test.Testing.getAbsImagePath(img_file), threshold=25)
vtk.test.Testing.interact()
#!/usr/bin/env python
import vtk
from vtk.test import Testing
from vtk.util.misc import vtkGetDataRoot
VTK_DATA_ROOT = vtkGetDataRoot()
# A script to test the vtkLassoStencilSource
reader = vtk.vtkPNGReader()
reader.SetDataSpacing(0.8,0.8,1.5)
reader.SetDataOrigin(0.0,0.0,0.0)
reader.SetFileName("" + str(VTK_DATA_ROOT) + "/Data/fullhead15.png")
reader.Update()
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputConnection(reader.GetOutputPort())
shiftScale.SetScale(0.2)
shiftScale.Update()
points1 = vtk.vtkPoints()
points1.InsertNextPoint(80,50,0)
points1.InsertNextPoint(100,90,0)
points1.InsertNextPoint(200,50,0)
points1.InsertNextPoint(230,100,0)
points1.InsertNextPoint(150,170,0)
points1.InsertNextPoint(110,170,0)
points1.InsertNextPoint(80,50,0)
points2 = vtk.vtkPoints()
points2.InsertNextPoint(80,50,0)
points2.InsertNextPoint(100,90,0)
points2.InsertNextPoint(200,50,0)
points2.InsertNextPoint(230,100,0)
points2.InsertNextPoint(150,170,0)
points2.InsertNextPoint(110,170,0)
def buildPipeline(self):
""" execute() -> None
Dispatch the vtkRenderer to the actual rendering widget
"""
self.colorInputModule = self.wmod.forceGetInputFromPort( "colors", None )
if self.input() == None:
print>>sys.stderr, "Must supply 'volume' port input to VectorCutPlane"
return
xMin, xMax, yMin, yMax, zMin, zMax = self.input().GetWholeExtent()
spacing = self.input().GetSpacing()
sx, sy, sz = spacing
origin = self.input().GetOrigin()
ox, oy, oz = origin
cellData = self.input().GetCellData()
pointData = self.input().GetPointData()
vectorsArray = pointData.GetVectors()
if vectorsArray == None:
print>>sys.stderr, "Must supply point vector data for 'volume' port input to VectorVolume"
return
self.setRangeBounds( list( vectorsArray.GetRange(-1) ) )
self.nComponents = vectorsArray.GetNumberOfComponents()
for iC in range(-1,3): print "Value Range %d: %s " % ( iC, str( vectorsArray.GetRange( iC ) ) )
for iV in range(10): print "Value[%d]: %s " % ( iV, str( vectorsArray.GetTuple3( iV ) ) )
self.initialOrigin = self.input().GetOrigin()
self.initialExtent = self.input().GetExtent()
self.initialSpacing = self.input().GetSpacing()
self.dataBounds = self.getUnscaledWorldExtent( self.initialExtent, self.initialSpacing, self.initialOrigin )
dataExtents = ( (self.dataBounds[1]-self.dataBounds[0])/2.0, (self.dataBounds[3]-self.dataBounds[2])/2.0, (self.dataBounds[5]-self.dataBounds[4])/2.0 )
centroid = ( (self.dataBounds[0]+self.dataBounds[1])/2.0, (self.dataBounds[2]+self.dataBounds[3])/2.0, (self.dataBounds[4]+self.dataBounds[5])/2.0 )
self.pos = [ self.initialSpacing[i]*self.initialExtent[2*i] for i in range(3) ]
if ( (self.initialOrigin[0] + self.pos[0]) < 0.0): self.pos[0] = self.pos[0] + 360.0
self.resample = vtk.vtkExtractVOI()
self.resample.SetInput( self.input() )
self.resample.SetVOI( self.initialExtent )
self.ApplyGlyphDecimationFactor()
lut = self.getLut()
if self.colorInputModule <> None:
colorInput = self.colorInputModule.getOutput()
self.color_resample = vtk.vtkExtractVOI()
self.color_resample.SetInput( colorInput )
self.color_resample.SetVOI( self.initialExtent )
self.color_resample.SetSampleRate( sampleRate, sampleRate, 1 )
# self.probeFilter = vtk.vtkProbeFilter()
# self.probeFilter.SetSourceConnection( self.resample.GetOutputPort() )
# colorInput = self.colorInputModule.getOutput()
# self.probeFilter.SetInput( colorInput )
resampledColorInput = self.color_resample.GetOutput()
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetOutputScalarTypeToFloat ()
shiftScale.SetInput( resampledColorInput )
valueRange = self.getScalarRange()
shiftScale.SetShift( valueRange[0] )
shiftScale.SetScale ( (valueRange[1] - valueRange[0]) / 65535 )
colorFloatInput = shiftScale.GetOutput()
colorFloatInput.Update()
colorInput_pointData = colorFloatInput.GetPointData()
self.colorScalars = colorInput_pointData.GetScalars()
self.colorScalars.SetName('color')
lut.SetTableRange( valueRange )
self.glyph = vtk.vtkGlyph3DMapper()
# if self.colorInputModule <> None: self.glyph.SetColorModeToColorByScalar()
# else: self.glyph.SetColorModeToColorByVector()
scalarRange = self.getScalarRange()
self.glyph.SetScaleModeToScaleByMagnitude()
self.glyph.SetColorModeToMapScalars()
self.glyph.SetUseLookupTableScalarRange(1)
self.glyph.SetOrient( 1 )
# self.glyph.ClampingOn()
self.glyph.SetRange( scalarRange[0:2] )
self.glyph.SetInputConnection( self.resample.GetOutputPort() )
self.arrow = vtk.vtkArrowSource()
self.glyph.SetSourceConnection( self.arrow.GetOutputPort() )
self.glyph.SetLookupTable( lut )
self.glyphActor = vtk.vtkActor()
self.glyphActor.SetMapper( self.glyph )
self.renderer.AddActor( self.glyphActor )
self.renderer.SetBackground( VTK_BACKGROUND_COLOR[0], VTK_BACKGROUND_COLOR[1], VTK_BACKGROUND_COLOR[2] )
self.set3DOutput(wmod=self.wmod)
def Execute(self):
if self.Image == None:
self.PrintError('Error: no Image.')
cast = vtk.vtkImageCast()
cast.SetInputData(self.Image)
cast.SetOutputScalarTypeToFloat()
cast.Update()
self.Image = cast.GetOutput()
if self.NegateImage:
scalarRange = self.Image.GetScalarRange()
negate = vtk.vtkImageMathematics()
negate.SetInputData(self.Image)
negate.SetOperationToMultiplyByK()
negate.SetConstantK(-1.0)
negate.Update()
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputConnection(negate.GetOutputPort())
shiftScale.SetShift(scalarRange[1]+scalarRange[0])
shiftScale.SetOutputScalarTypeToFloat()
shiftScale.Update()
self.Image = shiftScale.GetOutput()
if self.Interactive:
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkscripts.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
self.vmtkRenderer.RegisterScript(self)
if not self.ImageSeeder:
self.ImageSeeder = vmtkscripts.vmtkImageSeeder()
self.ImageSeeder.vmtkRenderer = self.vmtkRenderer
self.ImageSeeder.Image = self.Image
self.ImageSeeder.Display = 0
self.ImageSeeder.Execute()
##self.ImageSeeder.Display = 1
self.ImageSeeder.BuildView()
if not self.SurfaceViewer:
self.SurfaceViewer = vmtkscripts.vmtkSurfaceViewer()
self.SurfaceViewer.vmtkRenderer = self.vmtkRenderer
initializationMethods = {
'0': self.CollidingFrontsInitialize,
'1': self.FastMarchingInitialize,
'2': self.ThresholdInitialize,
'3': self.IsosurfaceInitialize,
'4': self.SeedInitialize
}
endInitialization = False
while not endInitialization:
queryString = 'Please choose initialization type: \n 0: colliding fronts;\n 1: fast marching;\n 2: threshold;\n 3: isosurface;\n 4: seed\n '
initializationType = self.InputText(queryString,self.InitializationTypeValidator)
initializationMethods[initializationType]()
self.DisplayLevelSetSurface(self.InitialLevelSets)
queryString = 'Accept initialization? (y/n): '
inputString = self.InputText(queryString,self.YesNoValidator)
if inputString == 'y':
self.MergeLevelSets()
self.DisplayLevelSetSurface(self.MergedInitialLevelSets)
queryString = 'Initialize another branch? (y/n): '
inputString = self.InputText(queryString,self.YesNoValidator)
if inputString == 'y':
endInitialization = False
elif inputString == 'n':
endInitialization = True
self.InitialLevelSets = self.MergedInitialLevelSets
self.MergedInitialLevelSets = None
else:
if self.Method == "collidingfronts":
self.CollidingFrontsInitialize()
elif self.Method == "fastmarching":
self.FastMarchingInitialize()
elif self.Method == "threshold":
self.ThresholdInitialize()
elif self.Method == "isosurface":
self.IsosurfaceInitialize()
elif self.Method == "seeds":
self.SeedInitialize()
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
def CollidingFrontsInitialize(self):
self.PrintLog('Colliding fronts initialization.')
seedIds1 = vtk.vtkIdList()
seedIds2 = vtk.vtkIdList()
if self.Interactive:
queryString = "Please input lower threshold (\'n\' for none): "
self.LowerThreshold = self.ThresholdInput(queryString)
queryString = "Please input upper threshold (\'n\' for none): "
self.UpperThreshold = self.ThresholdInput(queryString)
queryString = 'Please place two seeds'
seeds = self.SeedInput(queryString,2)
seedIds1.InsertNextId(self.Image.FindPoint(seeds.GetPoint(0)))
seedIds2.InsertNextId(self.Image.FindPoint(seeds.GetPoint(1)))
else:
seedIds1.InsertNextId(self.Image.ComputePointId([self.SourcePoints[0],self.SourcePoints[1],self.SourcePoints[2]]))
seedIds2.InsertNextId(self.Image.ComputePointId([self.TargetPoints[0],self.TargetPoints[1],self.TargetPoints[2]]))
scalarRange = self.Image.GetScalarRange()
thresholdedImage = self.Image
if (self.LowerThreshold is not None) | (self.UpperThreshold is not None):
threshold = vtk.vtkImageThreshold()
threshold.SetInputData(self.Image)
if (self.LowerThreshold is not None) & (self.UpperThreshold is not None):
threshold.ThresholdBetween(self.LowerThreshold,self.UpperThreshold)
elif (self.LowerThreshold is not None):
threshold.ThresholdByUpper(self.LowerThreshold)
elif (self.UpperThreshold is not None):
threshold.ThresholdByLower(self.UpperThreshold)
threshold.ReplaceInOff()
threshold.ReplaceOutOn()
threshold.SetOutValue(scalarRange[0] - scalarRange[1])
threshold.Update()
scalarRange = threshold.GetOutput().GetScalarRange()
thresholdedImage = threshold.GetOutput()
scale = 1.0
if scalarRange[1]-scalarRange[0] > 0.0:
scale = 1.0 / (scalarRange[1]-scalarRange[0])
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputData(thresholdedImage)
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(scale)
shiftScale.SetOutputScalarTypeToFloat()
shiftScale.Update()
speedImage = shiftScale.GetOutput()
collidingFronts = vtkvmtk.vtkvmtkCollidingFrontsImageFilter()
collidingFronts.SetInputData(speedImage)
collidingFronts.SetSeeds1(seedIds1)
collidingFronts.SetSeeds2(seedIds2)
collidingFronts.ApplyConnectivityOn()
collidingFronts.StopOnTargetsOn()
collidingFronts.Update()
subtract = vtk.vtkImageMathematics()
subtract.SetInputConnection(collidingFronts.GetOutputPort())
subtract.SetOperationToAddConstant()
subtract.SetConstantC(-10.0 * collidingFronts.GetNegativeEpsilon())
subtract.Update()
self.InitialLevelSets = vtk.vtkImageData()
self.InitialLevelSets.DeepCopy(subtract.GetOutput())
self.IsoSurfaceValue = 0.0
def FastMarchingInitialize(self):
self.PrintLog('Fast marching initialization.')
sourceSeedIds = vtk.vtkIdList()
targetSeedIds = vtk.vtkIdList()
if self.Interactive:
queryString = "Please input lower threshold (\'n\' for none): "
self.LowerThreshold = self.ThresholdInput(queryString)
queryString = "Please input upper threshold (\'n\' for none): "
self.UpperThreshold = self.ThresholdInput(queryString)
queryString = 'Please place source seeds'
sourceSeeds = self.SeedInput(queryString,0)
queryString = 'Please place target seeds'
targetSeeds = self.SeedInput(queryString,0)
for i in range(sourceSeeds.GetNumberOfPoints()):
sourceSeedIds.InsertNextId(self.Image.FindPoint(sourceSeeds.GetPoint(i)))
for i in range(targetSeeds.GetNumberOfPoints()):
targetSeedIds.InsertNextId(self.Image.FindPoint(targetSeeds.GetPoint(i)))
else:
for i in range(len(self.SourcePoints)/3):
sourceSeedIds.InsertNextId(self.Image.ComputePointId([self.SourcePoints[3*i+0],self.SourcePoints[3*i+1],self.SourcePoints[3*i+2]]))
for i in range(len(self.TargetPoints)/3):
targetSeedIds.InsertNextId(self.Image.ComputePointId([self.TargetPoints[3*i+0],self.TargetPoints[3*i+1],self.TargetPoints[3*i+2]]))
scalarRange = self.Image.GetScalarRange()
thresholdedImage = self.Image
if (self.LowerThreshold is not None) | (self.UpperThreshold is not None):
threshold = vtk.vtkImageThreshold()
threshold.SetInputData(self.Image)
if (self.LowerThreshold is not None) & (self.UpperThreshold is not None):
threshold.ThresholdBetween(self.LowerThreshold,self.UpperThreshold)
elif (self.LowerThreshold is not None):
threshold.ThresholdByUpper(self.LowerThreshold)
elif (self.UpperThreshold is not None):
threshold.ThresholdByLower(self.UpperThreshold)
threshold.ReplaceInOff()
threshold.ReplaceOutOn()
threshold.SetOutValue(scalarRange[0] - scalarRange[1])
threshold.Update()
scalarRange = threshold.GetOutput().GetScalarRange()
thresholdedImage = threshold.GetOutput()
scale = 1.0
if scalarRange[1]-scalarRange[0] > 0.0:
scale = 1.0 / (scalarRange[1]-scalarRange[0])
shiftScale = vtk.vtkImageShiftScale()
shiftScale.SetInputData(thresholdedImage)
shiftScale.SetShift(-scalarRange[0])
shiftScale.SetScale(scale)
shiftScale.SetOutputScalarTypeToFloat()
shiftScale.Update()
speedImage = shiftScale.GetOutput()
fastMarching = vtkvmtk.vtkvmtkFastMarchingUpwindGradientImageFilter()
fastMarching.SetInputData(speedImage)
fastMarching.SetSeeds(sourceSeedIds)
fastMarching.GenerateGradientImageOff()
fastMarching.SetTargetOffset(100.0)
fastMarching.SetTargets(targetSeedIds)
if targetSeedIds.GetNumberOfIds() > 0:
fastMarching.SetTargetReachedModeToOneTarget()
else:
fastMarching.SetTargetReachedModeToNoTargets()
fastMarching.Update()
subtract = vtk.vtkImageMathematics()
subtract.SetInputConnection(fastMarching.GetOutputPort())
subtract.SetOperationToAddConstant()
subtract.SetConstantC(-fastMarching.GetTargetValue())
subtract.Update()
self.InitialLevelSets = vtk.vtkImageData()
self.InitialLevelSets.DeepCopy(subtract.GetOutput())
self.IsoSurfaceValue = 0.0
