%0 Journal Article
%T Rate-distortion Estimation for Wavelet Video Coding Based on Multi-dimensional Gaussian Distribution
%A Xuesong Jin
%A Maoliu Lin
%A Zhaojie Zhao
%A Zhipeng Fan
%J Information Technology Journal
%D 2012
%I Asian Network for Scientific Information
%X The rate allocation proposed a problem that exists in wavelet transformation based video coding. The goal of this paper is to design a solution for estimating the rate-distortion for wavelet subband faced by wavelet-based video coders. We proposed a new technique for establishing rate-distortion function using correlation between wavelet coefficients. In order to minimize the overall error of the reconstructed video, a rate allocation algorithm based on rate-distortion function was implemented. Experiment results show that the proposed rate-distortion model can predict the real rate-distortion performance of video encoder, can improve the reconstructed video quality significantly.
%K multivariate normal distribution
%K rate-distortion function
%K optimal rate-allocation
%K Wavelet video coding
%U http://docsdrive.com/pdfs/ansinet/itj/2012/1316-1321.pdf