SGP03: Eurographics Symposium on Geometry Processing
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Browsing SGP03: Eurographics Symposium on Geometry Processing by Subject "Categories and Subject Descriptors (according to ACM CCS): E.4 [Coding and Information Theory]: Data Compaction and Compression G.1.2 [Numerical Analysis]: Approximation - approximation of surfaces and contours, wavelets and fractals I.3.4 [Computer Graphics]: Computational Geometry and Object Modeling - hierarchy and geometric transformations"
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Item Geometry Compression of Normal Meshes Using Rate-Distortion Algorithms(The Eurographics Association, 2003) Lavu, Sridhar; Choi, Hyeokho; Baraniuk, Richard; Leif Kobbelt and Peter Schroeder and Hugues HoppeWe propose a new rate-distortion based algorithm for compressing 3D surface geometry represented using triangular normal meshes. We apply the Estimation-Quantization (EQ) algorithm to compress normal mesh wavelet coefficients. The EQ algorithm models the wavelet coefficients as a Gaussian random field with slowly varying standard deviation that depends on the local neighborhood and uses rate-distortion optimal scalar quantizers. We achieve gains of 0.5 to 1 dB with the EQ algorithm compared to the recently proposed zerotree compression for normal meshes.