Variable-rate lattice VQ algorithm for vector subband coding

Hugh Q. Cao; Cindy C. Wang; Weiping Li

doi:10.1117/12.233247

27 February 1996 Variable-rate lattice VQ algorithm for vector subband coding

Hugh Q. Cao, Cindy C. Wang, Weiping Li

Proceedings Volume 2727, Visual Communications and Image Processing '96; (1996) https://doi.org/10.1117/12.233247
Event: Visual Communications and Image Processing '96, 1996, Orlando, FL, United States

Abstract

In this paper, a variable rate lattice VQ algorithm for vector subband coding is proposed. It is a modification of a two-stage vector quantization-lattice vector quantization (VQ-LVQ) algorithm introduced by J. Pan and T. R. Fischer. After the modification, the new algorithm is designed to target low-bit rate coding instead of moderate bit rate to high bit rate coding in the original design. The new algorithm has been applied to a low bit rate vector subband coding scheme. Simulation result shows it can reduce the memory requirement while offering even better rate-distortion performance (up to 1 db) than regular unstructured VQ.

Citation Download Citation

Hugh Q. Cao, Cindy C. Wang, and Weiping Li "Variable-rate lattice VQ algorithm for vector subband coding", Proc. SPIE 2727, Visual Communications and Image Processing '96, (27 February 1996); https://doi.org/10.1117/12.233247

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