Constant-quality constrained-rate allocation for FGS video coded bitstreams

Xi Min Zhang; Anthony Vetro; Yun-Qing Shi; Huifang Sun

doi:10.1117/12.453125

4 January 2002 Constant-quality constrained-rate allocation for FGS video coded bitstreams

Xi Min Zhang, Anthony Vetro, Yun-Qing Shi, Huifang Sun

Proceedings Volume 4671, Visual Communications and Image Processing 2002; (2002) https://doi.org/10.1117/12.453125
Event: Electronic Imaging, 2002, San Jose, California, United States

Abstract

This paper proposes an optimal rate allocation scheme for Fine-Granular Scalability (FGS) coded bitstreams that can achieve constant quality reconstruction of frames under a dynamic rate budget constraint. In doing so, we also aim to minimize the overall distortion at the same time. To achieve this, we propose a novel R-D labeling scheme to characterize the R-D relationship of the source coding process. Specifically, sets of R-D points are extracted during the encoding process and linear interpolation is used to estimate the actual R-D curve of the enhancement layer signal. The extracted R-D information is then used by an enhancement layer transcoder to determine the bits that should be allocated per frame. A sliding window based rate allocation method is proposed to realize constant quality among frames. This scheme is first considered for a single FGS coded source, then extended to operate on multiple sources. With the proposed scheme, the rate allocation can be performed in a single pass, hence the complexity is quite low. Experimental results confirm the effectiveness of the proposed scheme under static and dynamic bandwidth conditions.

Citation Download Citation

Xi Min Zhang, Anthony Vetro, Yun-Qing Shi, and Huifang Sun "Constant-quality constrained-rate allocation for FGS video coded bitstreams", Proc. SPIE 4671, Visual Communications and Image Processing 2002, (4 January 2002); https://doi.org/10.1117/12.453125

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