VQ Bit Rate Reduction Technique by Transform Compression

Yung Gi Wu, Shen-Chuan Tai

研究成果: Paper

摘要

In this paper, a technique to reduce the overhead of Vector Quantization (VQ) is developed here. Our method exploits the high correlation property among neighboring blocks. By rearranging the codebook after training process, the indices of neighboring vectors have fewer varieties, then, the gains of compression is attained. For the excellent energy compactness advantage of Discrete Cosine Transform (DCT), the indices buffer formed after encoding phase are fed to DCT to reduce the bit rate furthermore. Statistics illustrators are addressed to prove the efficient performance of proposed method. Experiments are carried out to natural gray images. Simulation results show that our method decreases the bit rate more than 50% with the same reconstructed image quality compared to standard VQ coding.

原文English
出版狀態Published - 1998 十二月 1
事件1998 International Conference on Communication Technology, ICCT 1998 - Beijing, China
持續時間: 1998 十月 221998 十月 24

Other

Other1998 International Conference on Communication Technology, ICCT 1998
國家China
城市Beijing
期間98-10-2298-10-24

    指紋

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

引用此

Wu, Y. G., & Tai, S-C. (1998). VQ Bit Rate Reduction Technique by Transform Compression. 論文發表於 1998 International Conference on Communication Technology, ICCT 1998, Beijing, China.