MathGroup Archive 2001

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A Penny for Thought

I wish to aquire an image of a penny (1 cent) and display it as three 
separate color coded countour maps 
1. height map: color corresponding to height
2. slope map: the first derivative of height map
3. local curvature map: the second derivative of height map
Any suggestions welcome.
Thank you.
John R Moran PhD, MD

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