[vtk-developers] Bug in vtkImageMapToWindowLevelColors.cxx

[Sebastien BARRE]

At 8/28/2007 09:46 AM, Mathieu Malaterre wrote:

>   Anyway I decided to track down the issue with vtkImageViewer2, and
>found out what the issue might be (see attached patch).
>   I am not sure I understand what used to be done before.

What used to be done is what is described in the description of the 
class: the *first* component is mapped through the LUT. If not LUT, 
the input data is passed through, and here the doc is apparently 
talking about the first component, so in the case of anything with 
more than one component is promoted to a gray scale image (hence the 
copying). Changing that would break the behavior of that class IMHO 
(i.e. it would no do what it used to do).
I did not look at the patch but you did not describe what you would 
implement otherwise.