Abstract: Bi-directional reflectance distribution function (BRDF) is a major approach to represent a surface’s appearance for image synthesis in computer graphics. Spatial BRDF (SBRDF) is one state-of-the-art method, which stores BRDF coefficients at each pixel of a map as a surface appearance. It has only a small storage size overhead relative to a standard RGB texture map, but it is more realistic. However, SBRDF acquisition is hard and tedious. So a novel editing method is proposed to compose SBRDF from both the measured SBRDF and a standard RGB image. Finally, the examples show the good rendered results by using this method.

Key words: computer application, texture mapping, SBRDF, editing algorithm