You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.1 KiB
90 lines
2.1 KiB
package require vtk
|
|
|
|
|
|
# first, create an image to warp
|
|
vtkImageGridSource imageGrid
|
|
imageGrid SetGridSpacing 16 16 0
|
|
imageGrid SetGridOrigin 0 0 0
|
|
imageGrid SetDataExtent 0 255 0 255 0 0
|
|
imageGrid SetDataScalarTypeToUnsignedChar
|
|
|
|
vtkLookupTable table
|
|
table SetTableRange 0 1
|
|
table SetValueRange 1.0 0.0
|
|
table SetSaturationRange 0.0 0.0
|
|
table SetHueRange 0.0 0.0
|
|
table SetAlphaRange 0.0 1.0
|
|
table Build
|
|
|
|
vtkImageMapToColors alpha
|
|
alpha SetInputConnection [imageGrid GetOutputPort]
|
|
alpha SetLookupTable table
|
|
|
|
vtkBMPReader reader1
|
|
reader1 SetFileName "$VTK_DATA_ROOT/Data/masonry.bmp"
|
|
|
|
vtkImageBlend blend
|
|
blend AddInput [reader1 GetOutput]
|
|
blend AddInput [alpha GetOutput]
|
|
|
|
# next, create a ThinPlateSpline transform
|
|
|
|
vtkPoints p1
|
|
p1 SetNumberOfPoints 8
|
|
p1 SetPoint 0 0 0 0
|
|
p1 SetPoint 1 0 255 0
|
|
p1 SetPoint 2 255 0 0
|
|
p1 SetPoint 3 255 255 0
|
|
p1 SetPoint 4 96 96 0
|
|
p1 SetPoint 5 96 159 0
|
|
p1 SetPoint 6 159 159 0
|
|
p1 SetPoint 7 159 96 0
|
|
|
|
vtkPoints p2
|
|
p2 SetNumberOfPoints 8
|
|
p2 SetPoint 0 0 0 0
|
|
p2 SetPoint 1 0 255 0
|
|
p2 SetPoint 2 255 0 0
|
|
p2 SetPoint 3 255 255 0
|
|
p2 SetPoint 4 96 159 0
|
|
p2 SetPoint 5 159 159 0
|
|
p2 SetPoint 6 159 96 0
|
|
p2 SetPoint 7 96 96 0
|
|
|
|
vtkThinPlateSplineTransform thinPlate
|
|
thinPlate SetSourceLandmarks p2
|
|
thinPlate SetTargetLandmarks p1
|
|
thinPlate SetBasisToR2LogR
|
|
|
|
# convert the thin plate spline into a grid
|
|
|
|
vtkTransformToGrid transformToGrid
|
|
transformToGrid SetInput thinPlate
|
|
transformToGrid SetGridSpacing 16 16 1
|
|
transformToGrid SetGridOrigin -0.5 -0.5 0
|
|
transformToGrid SetGridExtent 0 16 0 16 0 0
|
|
|
|
vtkGridTransform transform
|
|
transform SetDisplacementGrid [transformToGrid GetOutput]
|
|
transform SetInterpolationModeToCubic
|
|
# you must invert the transform before passing it to vtkImageReslice
|
|
transform Inverse
|
|
|
|
# apply the grid warp to the image
|
|
|
|
vtkImageReslice reslice
|
|
reslice SetInputConnection [blend GetOutputPort]
|
|
reslice SetResliceTransform transform
|
|
reslice SetInterpolationModeToLinear
|
|
|
|
# set the window/level to 255.0/127.5 to view full range
|
|
vtkImageViewer viewer
|
|
viewer SetInputConnection [reslice GetOutputPort]
|
|
viewer SetColorWindow 255.0
|
|
viewer SetColorLevel 127.5
|
|
viewer SetZSlice 0
|
|
viewer Render
|
|
|
|
|
|
|
|
|
|
|