A Perceptual Coding Method based on the Luma Sensitivity Model

Most video coding standards broadly used in the world such as MPEG series and H.26x are established based on rate-distortion theory. The spatial, temporal and statistic redundancies are reduced by using transform, prediction and entropy coding technologies. However, another important factor, which is named as perceptual redundancy, is ignored or not much developed in recent video coding technologies. In this paper, the authors research the human visual model and propose a perceptual coding method aiming at reducing the energy of luma residual coefficients in pixel domain. Our experiment results prove that this perceptual coding method can reduce the output bitrate of H.264 by 10%-34% without losing the subjective quality of video stream.