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||Some great artists are able to use the 3-D layering of paint as part of the art, using it to cast shadows and create highlights as a kind of bass relief.
||I've been thinking about this for some time. A scan of a
painting can easily be bump mapped with freeware to get
the texture, and saved as an isosurface. From there, the
texture can be 3d-printed onto a flat surface the usual way,
and then the piece is fed to a UV printer to paint the colors
on. EDIT- the Artnet article is better. My method probably
won't capture the correct texture
||It occurs to me that this would be better for topographic printed maps.