XIA Bei-dun, YANG Chun-ling. Rate Distribution Algorithm for Feedback-Free Distributed Video Coding[J]. Acta Electronica Sinica, 2014, 42(10): 1938-1943.
XIA Bei-dun, YANG Chun-ling. Rate Distribution Algorithm for Feedback-Free Distributed Video Coding[J]. Acta Electronica Sinica, 2014, 42(10): 1938-1943. DOI: 10.3969/j.issn.0372-2112.2014.10.011.
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
和
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0.1~0.4dB
且降低了编码端计算复杂度.
Abstract
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
and
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