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Content Provider | IEEE Xplore Digital Library |
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Author | Weijia Zhu Wenpeng Ding Yunhui Shi Yanfeng Sun Baocai Yin |
Copyright Year | 2011 |
Description | Author affiliation: Beijing Key Laboratory of Multimedia and Intelligent Software Technology, College Of Computer Science and Technology, Beijing University Of Technology, Beijing. 100124, China (Weijia Zhu; Wenpeng Ding; Yunhui Shi; Yanfeng Sun; Baocai Yin) |
Abstract | H.264/AVC adopts intra coding technique to reduce spatial redundancies. In order to achieve better coding performance, there are nine candidate modes for 4×4 block unit to be selected by Rate-Distortion Optimization(RDO) process in the H.264/AVC encoder-side. However, too many intra candidate modes undoubtedly increase the transmitted bits that represent them. To solve this problem, a novel method for reducing the number of intra modes is proposed in this paper. For each 4 × 4 block, our algorithm can cluster the nine candidate modes into several groups and selects one mode from each group as a representative of all the modes in this group, so the cost of transmission can be reduced significantly because of the reduction of number of candidate modes. Experimental results show that the proposed method achieves 3.2% bit-rate reduction on average for various video sequences. The improvement of coding performance can be up to 7% bit-rate reduction at low bit rate, averagely. |
Starting Page | 1665 |
Ending Page | 1668 |
File Size | 1528121 |
Page Count | 4 |
File Format | |
ISBN | 9781457713040 |
ISSN | 15224880 |
e-ISBN | 9781457713033 |
e-ISBN | 9781457713026 |
DOI | 10.1109/ICIP.2011.6115775 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2011-09-11 |
Publisher Place | Belgium |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Bit rate Clustering algorithms Prediction algorithms Image coding Encoding Conferences Video coding intra modes reduction H.264 intra prediction clustering |
Content Type | Text |
Resource Type | Article |
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