A global rate-distortion optimized approach for H.26L low bit rate robust video over the Internet

摘要

In recent years, more and more applications of video communication over the Internet have been extended, so the demand for reliable transmission of compressed video in a packet loss environment is ever increasing. Rate-Distortion optimized mode selection is a fundamental problem of video communication over packet-switched networks, but the classical R-D method only considers quantization distortion in the source and hence it cannot achieve global optimality. Here we introduce a new global R-D optimal Macro-Block coding mode decision scheme for the new H.26L video compression standard. Based on the Internet packet loss model of Bernoulli and Gilbert, this R-D mode decision approach can result in better error robustness than classical method. Furthermore, our experimental results also demonstrate its superior adaptive error resilience and feasibility.