[vtkusers] lookuptable: rgb to 256 colors

[David Gobbi]

Hi Marc,

Look at vtkImageQuantizeRGBToIndex.

 - David


On Tue, 20 Aug 2002, Marc Niethammer wrote:

> Hi,
>
> I would like to create a vtkLookupTable with 256 colors which maps
> arbitrary RGB values to a color that is close. I.e. I would need some
> sort of equation that translates the r,g and b component to an index
> in the colormap (lookuptable) which should then have an rgb entry that is
> close to the one used for computing the index.
>
> Does anyone know how to do this?
>
> Thanks.
>
> -- Marc
>
>
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