Color relief shading

[joongsun]

Dear Grass users

I like to have references regarding "Color relief shading"
technique.   

I know how hill shading can be achieved using
grey levels such as developed by B. Horn (1981), but I couldn't find
papers explaining COLOR hill shading algorithms.
My rough guess is the algorithm can be associated with inverse
HSI transform:
               elevation --> hue & saturation

               slope or gray level estimated through relief shading
                         --> intensity

Please let me know if anybody has seen such  papers or has ideas.


Thanks in advance

Joong-Sun Won
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e-mail: jswon at sari.kordi.re.kr

Geology Lab.
Korean Ocean Research & Development Inst.
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