一般化調和解析とベクトル量子化の併用による画像圧縮

佐田 宏史; 前川 仁孝; 伊與田 光宏

doi:10.11371/wiieej.03-02.0_9

Reports of the 203th Technical Conference of the Institute of Image Electronics Engineers of Japan

Session ID : 03-02-03

DOI https://doi.org/10.11371/wiieej.03-02.0_9

Conference information

Host: The Institute of Image Electronics Engineers of Japan

Co-host: The Institute of Image Information and Television Engineers

The Image Compression by Using Generalized Harmonic Analysis in Combination with Vector Quantization

*Hiroshi Sata, Yoshitaka Maekawa, Mitsuhiro Iyoda

Author information

Keywords: generalized harmonic analysis, vector quantization, image compression, specific codebook

CONFERENCE PROCEEDINGS RESTRICTED ACCESS

Details

Abstract

Vector quantization(VQ) is one of the image compression technologies. VQ has the feature that mosquito-noise does not arise, but it has a problem in compression in a low frequency domain. In order to improve this problem, the generalized harmonic analysis(GHA) codes a low frequency component. The GHA can analyze a signal in a low frequency domain with a good performance. Therefore, this paper proposes the compression scheme of using the GHA in combination with VQ for improving image quality, and estimates the proposed scheme. The proposed scheme codes a low frequency component by the GHA, and applies VQ to the region with the GHA's error more than a threshold.

Corresponding author

Register with J-STAGE for free!