Non-linear approximation of reflectance functions
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Reflectance and texture of real-world surfaces
ACM Transactions on Graphics (TOG)
Towards interactive bump mapping with anisotropic shift-variant BRDFs
HWWS '00 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware
Homomorphic factorization of BRDFs for high-performance rendering
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Image-Based Reconstruction of Spatially Varying Materials
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
A generalized surface appearance representation for computer graphics
A generalized surface appearance representation for computer graphics
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Combining texture mapping with bi-directional reflectance distribution functions (BRDFs) yields a representation of surface appearance with both spatial and angular detail. We call a texture map with a unique BRDF at each pixel a spatial bi-directional reflectance distribution function, or SBRDF. The SBRDF is a six-dimensional function representing the reflectance from each incident direction to each exitant direction at each surface point. Because of the high dimensionality of the SBRDF, previous appearance capture and representation work has focused on either spatial or angular detail, has relied on a small set of basis BRDFs, or has only treated spatial detail statistically [Dana 1999; Lensch 2001].