Perceptually Weighted Distortion Measure in Low Bitrate Block Based Video Coders (MA-P6)

Author(s) : Jaehan In (UB Video Inc., Canada) Ali Jerbi (UB Video Inc., Canada) Foued Ben Amara (University of Toronto, Canada)

Abstract : Visual artifacts found in compressed videos for low bit-rate applications are the result of various decisions made in the encoding process. Although many post-processing techniques are available to detect and reduce such artifacts, they often lead to undesired blurriness and require extensive computations. A better approach is to avoid such artifacts in the first place by making better decisions in the encoding process. In this paper, a Perceptually Weighted Distortion (PWD) measure is presented. This distortion measure outperforms the conventional distortion measures in terms of subjective quality at the cost of a slight increase in computational complexity.

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