Efficient Isotropic BRDF Measurement (English)

in Eurographics Workshop on Rendering ; 241-248
Eurographics Workshop on Rendering
The Eurographics Association , Postfach 8043, 38621 Goslar, Germany; 2003

In this paper we present novel reflectance measurement procedures that require fewer total measurements than standard uniform sampling approaches. First, we acquire densely sampled reflectance data for a large collection of different materials. Using these densely sampled measurements we analyze the general surface reflectance function to determine the local signal variation at each point in the function's domain. We then use wavelet analysis to derive a common basis for all of the acquired reflectance functions as well as a corresponding non-uniform sampling pattern that corresponds to all non-zero wavelet coefficients. Second, we show that the reflectance of an arbitrary material can be represented as a linear combination of the surface reflectance functions. Furthermore, our analysis provides a reduced set of sampling points that permits us to robustly estimate the coefficients of this linear combination. These procedures dramatically shorten the acquisition time for isotropic reflectance measurements. We present a detailed description and analysis of our measurement approaches and sampling strategies.

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Table of contents conference proceedings

The table of contents of the conference proceedings is generated automatically, so it can be incomplete, although all articles are available in the TIB.

9
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20
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26
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Efficient Illumination by High Dynamic Range Images
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64
Global Illumination Animation with Random Radiance Representation
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74
Interactive Global Illumination in Complex and Highly Occluded Environments
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82
Fast Texture Synthesis on Arbitrary Meshes
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90
Interactive Texture Synthesis on Surfaces Using Jump Maps
Zelinka, Steve / Garland, Michael | 2003
97
Hybrid Texture Synthesis
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106
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118
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130
Interactive Rendering of Translucent Deformable Objects
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141
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150
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Stewart, J. / Yu, J. / Gortler, S.J. / McMillan, L. | 2003
157
Wavelet Environment Matting
Peers, Pieter / Dutré, Philip | 2003
167
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178
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186
The Trilateral Filter for High Contrast Images and Meshes
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197
Translucent Shadow Maps
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202
Penumbra Maps: Approximate Soft Shadows in Real-Time
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208
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219
Rapid Shadow Generation in Real-World Lighting Environments
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230
Recovering 3-D Shape and Reflectance From a Small Number of Photographs
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241
Efficient Isotropic BRDF Measurement
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249
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260
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270
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281
Erosion Based Visibility Preprocessing
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