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Fast Block Mode Decision Scheme for B-picture Coding in H.264/AVC
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- Authors
- Jong Ho Kim, Hyo Sung Kim, Byung Gyu Kim, Hui Yong Kim, Se Yoon Jeong, Jin Soo Choi
- Issue Date
- 2010-09
- Citation
- International Conference on Image Processing (ICIP) 2010, pp.2873-2876
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- The recent H.264/AVC video coding standard provides a higher coding efficiency than previous standards. H.264/AVC achieves a bit rate saving of more than 50 % with many new technologies, but it is computationally complex. Most of fast mode decision algorithms have focused on Baseline profile of H.264/AVC which does not consider B-picture coding. In this paper, a fast block mode decision scheme for B-pictures in High profile and Main profile is proposed to reduce the computational complexity for H.264/AVC. To reduce the block mode decision complexity in B-pictures of High profile, we use the SAD value after 16×16 block motion estimation. This SAD value is used for the classification feature to divide all block modes into some proper candidate search block modes. A differential mode allocation method is also used for the list (list 0, list 1) of B-slices based on the SAD value of the 16 × 16 block mode. The proposed algorithm shows the average speed-up factors of 41.9 ~ 58.57% for IBBPBB sequences with a negligible bit increment and a minimal loss of image quality. © 2010 IEEE.
- KSP Keywords
- Allocation method, Average speed, Bit rate, Block motion estimation, Classification feature, Coding efficiency, Computational complexity, Decision algorithm, Decision scheme, Fast Mode Decision, H.264/AVC video