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ZBrush® Character Creation: Advanced Digital Sculpting, Second Edition by Scott Spencer

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Cavity and Ambient Occlusion Maps

Cavity and Ambient Occlusion maps are specialty textures that can be generated in ZBrush using the masking tools. Cavity maps are essentially the blue channel of a normal map and represent dark shading in the crevices of the model. They can be useful as a multiply layer over a diffuse color map to accentuate details or as a diffuse map in Maya to help punch up the high-frequency details in a render. Figure 9-67 shows a cavity map. It is essentially a black-and-white map in which black represents the recesses and white is the high points.

Figure 9-67: A cavity map

f0967.tif

Cavity mapping is intended to help mimic Ambient ...

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