[vtkusers] how to draw in 16 bits over an image and save it ?

[Sebastien_MARAUX]

I would like to write over an image/picture keeping a 16bits quality and save it
Should I use vtkImageCanvasSource2D ?

I metsome difficultys with it :
I made 2 tests, one w/o vtkICS2D  and one w/
w/o :
I read an image, and save it (ex with vtkBMPReader and vtkBMPWriter)
result : OK

w/ :
I read the image, set extent and source it in vtkICS2D, and try to write 
vtkICS2D->GetOutput() with vtkXXXreader.

result : could not get data from input.


Sebastien MARAUX
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