SATD-Based Intra Mode Decision for H.264/AVC Video Coding

Authors:
Yu-Ming Lee;Yu-Ting Sun;Yinyi Lin
Affiliations:
Dept. of Commun. Eng., Nat. Central Univ., Jungli, Taiwan;-;-
Venue:
IEEE Transactions on Circuits and Systems for Video Technology
Year:
2010

Citing 0
Cited 3

General Architecture for MPEG-2/H.263/H.264/AVC to H.264/AVC Intra Frame Transcoding

Journal of Signal Processing Systems
High-speed inter-view frame mode decision procedure for multi-view video coding

Future Generation Computer Systems
Low-complexity hierarchical mode decision algorithms targeting VLSI architecture design for the H.264/AVC video encoder

VLSI Design - Special issue on VLSI Circuits, Systems, and Architectures for Advanced Image and Video Compression Standards

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Abstract

In this letter, a rate estimation technique using transform coefficient variance is proposed in the rate-distortion cost function for intra mode decision. The new cost function achieves better coding performance than the cost function using the ??-domain model. The new cost function brings out an average speed-up factor of 13 when compared with the rate-distortion optimization (RDO) mode decision, but with considerable degradation in rate-distortion performance. To improve the coding performance, we propose a sum of the absolute transformed differences (SATD)-based mode decision algorithm, which incorporates both SATD and the variance information into the RDO mode decision method. The results show that the SATD-based mode decision scheme can achieve a significant improvement in computation (with 21% of total encoding time, or a speed-up factor of 5) with negligible peak signal-to-noise ratio loss. The proposed algorithm is also compared with two other distinct algorithms , and the results indicate that the proposed algorithm outperforms these two edge detection algorithms in coding performance, as well as time saving.