Motion Based Perceptual Distortion and Rate Optimization for Video Coding

Most conventional distortion metrics regard a video frame as a static image, and seldom exploit using the motion information of video frames in succession. Moreover, these methods usually calculate the visual distortion based on the independent spatial pixels. Recently, many researches show that the way people perceive the video signals is similar to the way filters process signals in the frequency domain. Therefore, in order to achieve better visual quality, we introduce a novel distortion measurement into the video coding system, which is consistent with human visual perception, and establish a perception-based rate-distortion optimization model. In this paper, we adopt Gabor filter family to decompose the video signals into frequency domain, and combine the video motion information to measure the perceptual distortion. We call it Motion tuned Distortion metric For Video coding (MDFV). After that we set up an MDFV based rate-distortion optimization model to select the best encoding mode. The experimental results show that the proposed approach is effective.