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Proceedings Paper

Fast intra-prediction model selection for H.264 codec
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Paper Abstract

We investigate the encoding speed improvement for H.264 with a special focus on fast intra-prediction mode selection in this work. It is possible to adopt the rate-distortion (RD) optimized mode in H.264 to maximize the coding gain at the cost of a very high computational complexity. To reduce the complexity associated with the intra-prediction mode selection, we propose a two-step fast algorithm. In the first step, we make a course-level decision to split all possible candidate modes into two groups: the group to be examined further and the group to be ignored. The sizes of these two groups are adaptively determined based on the block activities. Then, in the second step, we focus on the group of interest, and consider an RD model for final decision-making. It is demonstrated by experiment results that the proposed scheme performs 5 to 7 time faster than the current H.264 encoder (JM5.0c) with little degradation in the coding gain.

Paper Details

Date Published: 19 November 2003
PDF: 12 pages
Proc. SPIE 5241, Multimedia Systems and Applications VI, (19 November 2003); doi: 10.1117/12.511393
Show Author Affiliations
Chang-sung Kim, Univ. of Southern California (United States)
Qing Li, Univ. of Southern California (United States)
C. -C. Jay Kuo, Univ. of Southern California (United States)

Published in SPIE Proceedings Vol. 5241:
Multimedia Systems and Applications VI
Andrew G. Tescher; Bhaskaran Vasudev; V. Michael Bove; Ajay Divakaran, Editor(s)

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