Margus Ramst wrote:

>A basic method in MegaPOV would be to get a grid of height values
>(using trace) and start comparing: if a point is higher than all 8
>points around it (or 5 points at the edges, or 3 points in the corner)
>it is the top of a bump. 

If the base of your HF is an image you can use ImagInc by Remco de Korte 
to get a grid of values: http://www.xs4all.nl/~remcodek/pov.html . It 
turns an image into an INC file so you can use the RGB-data.

Ingo

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