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105 lines
2.5 KiB
105 lines
2.5 KiB
2 years ago
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package require vtk
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package require vtkinteraction
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# Create the RenderWindow, Renderer and both Actors
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vtkRenderer ren1
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vtkRenderWindow renWin
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renWin AddRenderer ren1
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vtkRenderWindowInteractor iren
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iren SetRenderWindow renWin
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# load in the texture map
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#
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vtkPNMReader imageIn
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imageIn SetFileName "$VTK_DATA_ROOT/Data/earth.ppm"
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vtkImageLuminance il
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il SetInputConnection [imageIn GetOutputPort]
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vtkImageCast ic
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ic SetOutputScalarTypeToFloat
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ic SetInputConnection [il GetOutputPort]
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# smooth the image
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vtkImageGaussianSmooth gs
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gs SetInputConnection [ic GetOutputPort]
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gs SetDimensionality 2
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gs SetRadiusFactors 1 1 0
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# gradient the image
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vtkImageGradient imgGradient;
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imgGradient SetInputConnection [gs GetOutputPort];
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imgGradient SetDimensionality 2
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vtkImageMagnitude imgMagnitude
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imgMagnitude SetInputConnection [imgGradient GetOutputPort]
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# non maximum suppression
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vtkImageNonMaximumSuppression nonMax;
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nonMax SetMagnitudeInput [imgMagnitude GetOutput];
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nonMax SetVectorInput [imgGradient GetOutput];
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nonMax SetDimensionality 2
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vtkImageConstantPad pad
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pad SetInputConnection [imgGradient GetOutputPort]
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pad SetOutputNumberOfScalarComponents 3
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pad SetConstant 0
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vtkImageToStructuredPoints i2sp1
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i2sp1 SetInputConnection [nonMax GetOutputPort]
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i2sp1 SetVectorInput [pad GetOutput]
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# link edgles
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vtkLinkEdgels imgLink;
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imgLink SetInputConnection [i2sp1 GetOutputPort];
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imgLink SetGradientThreshold 2;
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# threshold links
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vtkThreshold thresholdEdgels;
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thresholdEdgels SetInputConnection [imgLink GetOutputPort];
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thresholdEdgels ThresholdByUpper 10;
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thresholdEdgels AllScalarsOff
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vtkGeometryFilter gf
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gf SetInputConnection [thresholdEdgels GetOutputPort]
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vtkImageToStructuredPoints i2sp
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i2sp SetInputConnection [imgMagnitude GetOutputPort]
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i2sp SetVectorInput [pad GetOutput]
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# subpixel them
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vtkSubPixelPositionEdgels spe;
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spe SetInputConnection [gf GetOutputPort];
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spe SetGradMaps [i2sp GetOutput];
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vtkStripper strip
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strip SetInputConnection [spe GetOutputPort]
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vtkPolyDataMapper dsm
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dsm SetInputConnection [strip GetOutputPort]
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dsm ScalarVisibilityOff
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vtkActor planeActor
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planeActor SetMapper dsm
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[planeActor GetProperty] SetAmbient 1.0
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[planeActor GetProperty] SetDiffuse 0.0
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# Add the actors to the renderer, set the background and size
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ren1 AddActor planeActor
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renWin SetSize 600 300
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# render the image
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iren Initialize
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iren AddObserver UserEvent {wm deiconify .vtkInteract}
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renWin Render
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[ren1 GetActiveCamera] Zoom 2.8
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renWin Render
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# prevent the tk window from showing up then start the event loop
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wm withdraw .
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