中文摘要：

码率分配是无反馈分布式视频编码中的关键技术之一.本文研究编码端快速边信息生成方法,基于边信息和Wyner-Ziv帧各个位平面误码率,提出了一种编码端码率分配算法（Bitplane Error Probability based Encoder Rate Control,BEP-ERC）.还提出在编码端精确估计拉普拉斯—柯西混合分布（Laplace-Cauchy Mixture Distribution,LCMD）模型参数α和μ的思想.实验表明本文算法与现有算法相比,率失真性能提升0.1~0.4d B,且降低了编码端计算复杂度.

英文摘要：

Rate control is one of the key technologies in feedback-free distributed video coding（ DVC） systems.This paper studies the fast method to generate side information at encoder,based on the error probability of each bitplane between side information and Wyner-Ziv（ WZ） information,a bitplane error probability based encoder rate control（ BEP-ERC） algorithm is proposed.Also the idea of calculating the Laplace-Cauchy mixture distribution（ LCMD） model parameter α and μ at encoder is proposed.Experimental results show that the proposed BEP-ERC method has a higher rate-distortion（ RD） performance than other existing feedback-free algorithms,with the increament gap of 0.1 ~ 0.4d B.In addition,its computation complexity is lower.