The article describes method Tiled Rendering refers to VTKUsersGuide
The class vtkRenderLargeImage breaks up the whole rendering into separated parts. The different pieces are handled and combined into a final large image.
The interface SetMagnification of vtkRenderLargeImage control how much to larger the original image.
vtkRenderLargeImage renderLarge
renderLarge SetInput ren # Indicates what renderer to get the pixel data from.
renderLarge SetMagnification 4
vtkTIFFWriter writer
writer SetInputConnection [renderLarge GetOutputPort]
writer SetFileName largeImage.tif
writer Write
Right: original image
Left: image generated from vtkRenderLargeImage
Read tif file and construct new view.
package require vtk
vtkTIFFReader reader
reader SetFileName largeImage.tif
vtkImageViewer2 imageViewer
imageViewer SetInputConnection [reader GetOutputPort]
vtkRenderWindowInteractor renderWindowInteractor
imageViewer SetupInteractor renderWindowInteractor
#imageViewer Render
[imageViewer GetRenderer] ResetCamera
imageViewer Render
# Withdraw the default tk window
wm withdraw .
renderWindowInteractor Start
