speaking of normals, another CG package has introduced a Vector Normal image
type. The image is formed by baking a sculpted, high-res model (which started
as a grid) to a 2D image. Each RGB value for a pixel is a normalized point in
space and is used to displace the corresponding vertex in 3D space. This image
is applied as a texture/modifier to a flat mesh. It "looks" like a normal
image, depending on how it was sculpted, but it can contain bends and curves,
not just a 1-axis displacement. Sliders allow you to control how big you want
the ... extrusion... to be.
The idea is that you can bake complicated stuff like ears, horns, plants, etc
and get actual geometry out of a 2D image.
--Roger
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