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Proceedings Paper

Fast adaptive early termination for mode selection in H.264/AVC standard based on x264 implementation
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Paper Abstract

In the H.264/AVC video coding standard, the mode decision component involves a large amount of computation. This paper presents a fast or computationally efficient mode prediction and selection approach which has the following attributes: (a) both the spatial and temporal information are used to achieve early termination using adaptive thresholds, (b) inclusion of a modulator capable of trading off computational efficiency and accuracy, (c) a homogenous region detection procedure for 8×8 blocks based on adaptive thresholds. The developed approach consists of three main steps: (1) mode prediction, (2) early termination based on adaptive thresholds, and (3) refinement by checking all the modes. In addition, in order to avoid sub-partitions into smaller block sizes for 8x8 blocks, texture information is utilized. It is shown that the developed approach leads to a computationally efficient video coding implementation as compared to the previous fast approaches. The results obtained on QCIF, CIF, and HD format video sequences based on x264 are presented to demonstrate the computational efficiency of the developed approach at the expense of acceptably low losses in video quality.

Paper Details

Date Published: 26 February 2008
PDF: 10 pages
Proc. SPIE 6811, Real-Time Image Processing 2008, 68110A (26 February 2008);
Show Author Affiliations
Jianfeng Ren, Univ. of Texas at Dallas (United States)
Nasser Kehtarnavaz, Univ. of Texas at Dallas (United States)
Madhukar Budagavi, Texas Instruments (United States)

Published in SPIE Proceedings Vol. 6811:
Real-Time Image Processing 2008
Nasser Kehtarnavaz; Matthias F. Carlsohn, Editor(s)

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