Abstract
The surface texture of smooth materials, e.g., polished woods or stones, etc., has an appearance which exhibits material-specific behavior dependent on viewing and lighting conditions. To account for these appearance factors such textures can be represented by Spatially Varying BRDFs (SVBRDF). The SVBRDF representation of material can be viewed as a spatial collection of BRDFs distributed over the surface to simulate the appearance of smooth materials. As an essential part of SVBRDF representations are BRDFs, this chapter starts with description of Bidirectional Reflectance Distribution Functions (BRDFs) and their parameterization, compression, and modeling methods. Next, techniques of their spatial extension to SVBRDF modeling and editing are described.
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