Perceptually-adaptive Pre-processing for Motion-compensated Residue in Video Coding (MA-P6)

Author(s) : Xiaokang Yang (Institute for Infocomm Research, Singapore) Weisi Lin (Institute for Infocomm Research, Singapore) Zhongkang Lu (Institute for Infocomm Research, Singapore) Ee Ping Ong (Institute for Infocomm Research, Singapore) Susu Yao (Institute for Infocomm Research, Singapore)

Abstract : We present a perceptually-adaptive pre-processing scheme for motion-compensated residue, based on just-noticeable-distortion (JND) profile. Human eyes cannot sense any changes below the JND threshold around a pixel due to their underlying spatial/temporal masking properties. From the viewpoint for signal compression, smaller variance of signal results in less objective distortion of the reconstructed signal for a given bit-rate. In this paper, the JND profile is incorporated into a motion-compensated residue signal pre-processor for variance reduction towards coding quality enhancement. A solution of adaptively determining the parameter for the residue pre-processor is also proposed. Experimental results show that both perceptual quality and objective quality are enhanced in coded video at a given bit-rate.

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