Tools for Computer Art
Normal Map Photography
A technique for creating normal maps.
All you need is a camera and a flashlight.
Want to add displacement to your existing models?
CrazyBump creates a displacement map from your existing normal map.
CrazyBump also creates normals and concavity. Check it out.
Normal Map Actions for Photoshop
Actions for manipulating tangent-space normal maps
Rotate and flip normal maps without breaking them.
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things by Ryan