Improved POCS-based deblocking technique using wavelet transform in block coded image

被引:0
|
作者
Kwon, Goo-Rak
Kim, Hyo-Kak
Park, Chun-Soo
Kim, Yoon
Ko, Sung-Jea
机构
[1] Korea Univ, Dept Elect Engn, Seoul 136701, South Korea
[2] Kangweon Natl Univ, Dept Elect & Comp Engn, Chunchon 200701, Kangwon Do, South Korea
来源
Advances in Multimedia Information Processing - PCM 2006, Proceedings | 2006年 / 4261卷
关键词
D O I
暂无
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
This paper presents a improved POCS-based deblocking technique, based on the theory of the projection onto convex sets (POCS) to reduce the blocking artifacts in decoded images. We propose a new smoothness constraint set (SCS) and its projection operator in the wavelet transform (WT) domain to remove unnecessary high-frequency components caused by blocking artifacts. In order to eliminate the blocking artifacts component while preserving the original edge component, we also propose a significant coefficient decision method (SCDM) for fast and efficient performance. Experimental results show that the proposed method can not only achieve a significantly enhanced subjective quality but also increase the PSNR improvement in the reconstructed image.
引用
收藏
页码:676 / 685
页数:10
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