[Radiance-general] Re: colorpict modifiers

[Greg Ward]

Hi Lars,

If you apply a colorpict using a grayscale image, you only get gray 
modifications to your material color.  If that material has color, then 
you will get a brightness modification to the color specified in the 
material primitive.  I don't know of any reliable procedures for taking 
color information in a subset of an image and extrapolating it into the 
surrounding image.  If your color image only covers a fraction of your 
surface, you are not going to be able to get color for the rest of it 
by combining this somehow with a complete grayscale image.

-Greg