Subjective Rate distortion Optimization in HEVC with Perceptual Model of Multipl

This paper proposes a novel perceptual video coding approach with a perceptual model of multiple faces, to improvethe coding efficiency of HEVC in video conferencing scenarios. For the perceptual model, a latest active appearance model(AAM) is used to detect multiple faces in a video frame. Then, the perceptual model of multiple faces can be established on the basis of the detected multiple faces. With the established perceptual model of multiple faces, all faces in a video frame can