[vtkusers] Volume overlay problem

[Sara Rolfe]

For future reference, I have solved this problem by switching from  
vtkFixedPointVolumeRayCastMapper to vtkVolumeTextureMapper2D.

Thanks,
Sara

On Feb 10, 2011, at 1:59 PM, Sara Rolfe wrote:

> Hello,
>
> I'm trying to overlay two volumes for display.  I have not been able  
> to find an example like this, and while I did find several questions  
> regarding this in the email archives, none of them had answers.   
> However, this seems like something that would be commonly used.  If  
> there are examples of this somewhere that I have missed, could you  
> let me know?
>
> My approach is to map both objects onto the same image in different  
> value ranges, and then use a piecewise color map to differentiate  
> between them.  I am attaching pictures of the object to be displayed  
> in black and white and the color patches to be displayed on top.   
> However, my display does not look like I had expected, as seen in  
> the third image attached.  I am also including my code.
>
> If you have any suggestions for me, please let me know!
>
> Sara
> < 
> displayColor 
> .png 
> > 
> < 
> displayBW 
> .png 
> > 
> < 
> displayProblem 
> .png 
> > 
> < 
> VolumeRenderOverlay 
> .cxx>_______________________________________________
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