Hybrid Codec-Based Intra-Frame Joint Rate Control for Stereoscopic Video

被引:10
作者
Chang, Yongjun [1 ]
Kim, Munchurl [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Dept Informat & Commun Engn, Taejon 305701, South Korea
关键词
Distortion-quantization model; hybrid codec; joint rate control; optimization; rate-quantization model;
D O I
10.1109/LSP.2011.2162504
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An intra-frame joint rate control scheme is first proposed for a hybrid coder to encode stereoscopic video, which is based on an optimization framework with a gradient-based quadratic rate-quantization model and a gradient-based linear distortion-quantization model. The proposed rate control scheme jointly works on the left and right encoders for stereoscopic video input by controlling the output bit rates of both encoders in the sense that the sum of the two decoded video qualities is maximized and the quality difference is maintained around a desired level for a given target bit budget at the same time. In experiments, the proposed intra-frame joint rate control scheme for the hybrid coder produces the average 0.62 dB gain in PSNR, 64.93% reduction in the mean PSNR differences and 72.04% reduction in the MSE of PSNR difference, compared with the independent rate control schemes of the MPEG-2 TM5 and H. 264 JM 16.
引用
收藏
页码:543 / 546
页数:4
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