An Inter-Frame Coding Algorithm based on Vector Quantization
A kind of low complexity inter-frame coding algorithm based on vector quantization (VQ) is presented in this paper. There are three inter encode modes according to the motion type of the image block. Notencode mode is adopted by static block, residual mean coding mode is adopted by the smooth motion block, VQ and mean encode mode are adopted by general motion block. The motion type of the image block is determined by the moving threshold TH and smoothing threshold T. The size of each encode block is adjusted adaptively by the size of the static region or smoothing motion region. Simulations show that this algorithm can get great rate distortion performance, especially for the head shoulder sequences with large static and smoothing background. PSNR can be achieved at 35.63dB, while the compression rate can be achieved at 150.38, and bit rate with frame rate of 10fps is 50.69kbps. The quality and bit rate can meet the visual and bandwidth requirements in the application of video telephony communications.
vector quantization encode mode motion type threshold static smooth
Meihua Gu Lei Zhu Ningmei Yu Dongfang Wang
College of Electronic Information Xian Polytechnic University Xian,China Department of Electronics Engineering Xian University of Technology Xian,China
国际会议
上海
英文
2679-2683
2009-11-20（万方平台首次上网日期，不代表论文的发表时间）