[vtkusers] JPEG Output for non UNSIGNED_CHAR dataset

[Jérôme Coloos]

Hi everybody,

I'm trying to make a JPEG output of my VTK window by using the
vtkLibJPEGPacker class which I found on
http://www.cineca.it/download/devel/index.html

But it seems to work only with UNSIGNED_CHAR vtkImageData.

My question is :

How to transform the vtkImageData into an UNSIGNED_CHAR one ?

Thank you.


The code I used for the export is the following :
============================================================================
vtkWindowToImageFilter* renSrc = vtkWindowToImageFilter::New();
	renSrc->SetInput(myclass->renWin);

vtkLibJPEGPacker *packer = vtkLibJPEGPacker::New();
	packer ->SetInput (renSrc->GetOutput());
	packer ->PackToFileOn();
	packer ->SetFileName("toto.jpg");
	packer ->Pack();
============================================================================
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