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2002
Conference Paper
Titel
Lagrangian coder control and comparison of MPEG-4 and H.26L video codecs
Abstract
A rate-distortion-optimized coder control for block-based hybrid video coders using Lagrangian techniques is presented. It was successfully applied to the ISO/IEC standard MPEG-4 Visual and the current ITU-T project H.26L. In both cases, the improved encoding strategy provides visible performance gains compared to the previous encoding strategies of MPEG-4 Visual and H.26L, respectively. Furthermore, this unified coder control allows a fair comparison between the MPEG-4 Visual and the H.26L syntax in terms of coding efficiency. Objective (PSNR) and subjective results of this comparison are presented.