Image coding with variable rate RVQ
- 1 January 1992
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 3 (15206149) , 369-372 vol.3
- https://doi.org/10.1109/icassp.1992.226224
Abstract
A new residual vector quantizer (RVQ) design algorithm is modified so that the multistage structure can be exploited to produce variable-rate RVQ (VR-RVQ) systems. VR-RVQ systems are shown to have very useful properties: (1) the codebook storage requirement and the search complexity are both reduced; (2) the VR-RVQ system is able to exploit the spatial variance of perceptually important information; and (3) the VR-RVQ codebook can operate over a wide range of rates, without having to store several codebooks. Experiments were performed using VR-RVQ systems with vectors of many sizes, and results show significant improvement over fixed-rate RVQ systems with the same block size.<>Keywords
This publication has 5 references indexed in Scilit:
- Residual VQ (vector quantizaton) with state prediction: a new method for image codingPublished by SPIE-Intl Soc Optical Eng ,1991
- A perspective view of finite state binary residual VQPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1991
- Vector quantization in speech codingProceedings of the IEEE, 1985
- Vector quantizationIEEE ASSP Magazine, 1984
- An Algorithm for Vector Quantizer DesignIEEE Transactions on Communications, 1980