Efficient video coding based on backward coding of wavelet trees

Linning Ye; Jiangling Guo; Brian NutterSunanda Mitra

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Efficient video coding based on backward coding of wavelet trees

机译：Efficient video coding based on backward coding of wavelet trees

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摘要

The authors present a wavelet tree-based video coding system, which is referred to as three-dimensional (3-D) backward coding of wavelet trees (BCWT). The 3-D BCWT algorithm encodes the wavelet trees from the lowest wavelet level to the highest wavelet level. All the coding steps for each wavelet coefficient are finished during one coding pass, which makes this algorithm very efficient. The coding process of the 3-D BCWT algorithm is subband by subband, so that a coefficient will be encoded only after all the coefficients in the next lower-level wavelet subbands have been encoded. The output bitstream of the encoder is therefore layered according to the wavelet level. The implementation results show that the 3-D BCWT algorithm has almost identical rate distortion performance to the well-known 3-D set partitioning in hierarchical trees (SPIHT) algorithm. However, it is computationally more efficient and uses significantly less memory than the 3-D SPIHT algorithm.

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来源
《Optical Engineering》 |2012年第4期|047403-1-047403-10|共10页
作者
Linning Ye; Jiangling Guo; Brian NutterSunanda Mitra;
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作者单位

Jinan University, Electrical and Information College Zhuhai, Guangdong 519070, China;

Texas Tech University, Department of Electrical and Computer Engineering, Lubbock, Texas 79409-3102;

Southwestern University of Finance and Economics, School of Economic Information Engineering, 55 Guanghua Cun Street Chengdu, Sichuan 610074, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
wavelet transforms; 3-D subband coding; video compression; wavelet trees;

Efficient video coding based on backward coding of wavelet trees

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