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Proceedings Paper

Region-of-interest-based bit-allocation scheme for H.264/AVC
Author(s): Taoran Lu; Zhifeng Chen; Dapeng Wu; Heather Yu
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Paper Abstract

This paper presents a new Region-of-Interest (ROI) based bit-allocation scheme for advanced video coding (H.264). We use a group-of-picture (GOP) structure to compensate bits consumption between Intra and Inter frames in one GOP, and simultaneously adjust the quantization parameter (QP) for each macroblock, according to the region-of-interest on Intra(I) or Inter(P) frames, respectively. Our algorithm is implemented on the H.264/AVC codec JM14.0 and totally compatible with existing H.264/AVC decoders. The experimental results show that compared to the standard JM14.0 encoder, under the same bitrate budget, the proposed algorithm achieves a subjective visual quality improvement as well as an objective PSNR gain. The ROI-based bit allocation scheme has a potential to low-bitrate and real-time video applications, such as video conferencing and mobile TV broadcasting.

Paper Details

Date Published: 28 April 2010
PDF: 8 pages
Proc. SPIE 7708, Mobile Multimedia/Image Processing, Security, and Applications 2010, 77080Q (28 April 2010); doi: 10.1117/12.849166
Show Author Affiliations
Taoran Lu, Univ. of Florida Gainesville (United States)
Zhifeng Chen, Univ. of Florida Gainesville (United States)
Dapeng Wu, Univ. of Florida Gainesville (United States)
Heather Yu, Huawei Technologies Co. Ltd. (United States)

Published in SPIE Proceedings Vol. 7708:
Mobile Multimedia/Image Processing, Security, and Applications 2010
Sos S. Agaian; Sabah A. Jassim, Editor(s)

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