MOS-based bit allocation in SNR-temporal scalable coding

In a scalable video coding, improvement in the motion smoothness (frame rate) and in the spatial quality (SNR) conflicts within a given bit rate. Since the motion and the spatial activities in a target video varies from scene to scene, these activities should be taken into account in order to optimally allocate the temporal and quality scalability. This paper proposes a fundamental idea for allocating bit rates in the temporal and quality scalability based on the maximization of the estimated mean opinion score (MOS) for each scene. A reduction technique of MOS fluctuation in the enhancement layer is discussed as an application of the proposed technique.