关键词: 多视点视频编码, 码率控制, 比特分配, 率失真模型, 基本单元层

Abstract: Current multi-view Video Coding（MVC） reference model in Joint Video Team（JVT） does not provide efficient rate control schemes, this paper proposes a rate control algorithm for MVC based on correlation analysis. The proposed algorithm classifies each picture into six frame types based on the relation between disparity prediction and temporal prediction estimation and also improves the estimation accuracy of the Mean Absolute Difference（MAD）. The proposed algorithm consists of four levels to control the rate bits more accurately. This paper reasonably allocates bit-rate among views based on the correlation analysis. In a frame layer, it performs bit allocation according to the hierarchical B-frame. In a basic unit layer, it selects quantization parameter adaptively according to the content complexity of the macroblock. Compared to the multi-view video coding with fixed quantization parameter, the proposed scheme efficiently controls the bit rate with an average rate control error of 0.6%.

Key words: Multi-view Video Coding（MVC）, rate-control, bit-allocation, rate-distortion model, basic unit layer