https://scholars.lib.ntu.edu.tw/handle/123456789/121740
標題: | Multiple Blocks Matching Pursuit Update Algorithm for Low Bit Rate Video Coding | 作者: | Lin, Jian-Liang Hwang, Wen-Liang Pei, Soo-Chang |
關鍵字: | Content based video coding;fast algorithm;matching pursuit (MP);video coding | 公開日期: | 三月-2006 | 出版社: | Taipei:National Taiwan University Dept Chem Engn | 卷: | VOL. 16 | 期: | NO. 3 | 起(迄)頁: | - | 來源出版物: | IEEE Transactions on Circuits and Systems for Video Technology | 摘要: | Matching pursuit (MP) is a greedy algorithm that decomposes a signal into a linear combination of bases within an overcomplete dictionary. The MP algorithm is usually only approximated due to its massive computational complexity. By approximating a residual in a subspace, we propose a multiple blocks MP update algorithm for video coding that achieves a faster and better MP approximation than traditional algorithms. As the subspace is dependent on a residual, our algorithm is content-dependent. We evaluate the coding performance, including the peak signal-tonoise ratio, runtime, and subjective quality, of our algorithm and compare it with traditional MP algorithms. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/200611150121792 | 其他識別: | 246246/200611150121792 |
顯示於: | 電信工程學研究所 |
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