[vtkusers] RGB Image to viewer

[Juan Carlos Prieto]

Hello all,

I have an rgb image that I created and contains a color gradation i.e. 
the color spectrum.
I have tried using the vtkColorTransferFunction to add all the colors 
but this causes the application to lock, I guess for the large 
lookuptable takes a long time to process.

I have also tried adding some colors like this:

    colorfunction->AddRGBPoint( mingreyvalue, r, g, b); //the grey value
    is a double
    colorfunction->AddRGBPoint( maxgreyvalue, r, g, b);
    colorfunction->Build();


But this doesn't do the trick, I just shows the colors correspoding to 
min and max.

I've seen that in applications like volview, the image is shown 
correctly and it doesn't take a long time to load or anything, so I 
guess there is an efficient way to build up the lookuptable that shows 
the correct values for every voxel.

Please any ideas or comments are welcome.

Thank you very much,


-- 
Juan Carlos Prieto
Phd Student
CREATIS <http://www.creatis.insa-lyon.fr> Tel:+33472438918
7 Av Jean Capelle
69621 Villeurbanne Cedex
France
Personal page <http://www.creatis.insa-lyon.fr/%7Eprieto>
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