DIRECTION-ADAPTIVE CONTEXT MODELING FOR SIGN CODING IN EMBEDDED WAVELET IMAGE CODER

被引：2

作者：

Kim, Sungjei ^{[1
]}

Jeong, Jinwoo ^{[1
]}

Kim, Yong-Goo ^{[1
]}

Choi, Yungho ^{[2
]}

Choe, Yoonsik ^{[1
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, Seoul 120749, South Korea

[2] Konkuk Univ, Dept Elect & Engn, Seoul, South Korea

来源：

2009 16TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, VOLS 1-6 | 2009年

关键词：

Image coding; context modeling; sign coding; direction adaptation; TRANSFORM; COMPRESSION; COEFFICIENTS;

D O I：

10.1109/ICIP.2009.5414218

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

The conventional embedded wavelet image coder exploiting the adjacent neighbors is limited to efficiently compress the sign coefficients, since the wavelet coefficients are highly correlated along the dominant image features, such as edges or contours. To solve the problem, in this paper, we propose the direction-adaptive sign context modeling by adaptively exploiting the neighbors suitable to the dominant image features. Experimental results show that the sign coding based on the proposed context modeling reduces the sign bits up to 5.5% compared to the conventional sign coding method.

引用

页码：2809 / +

页数：2

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