User-oriented approach in spatial and temporal domain video coding

Scalable coding techniques usually focus on enhancing the quality of the whole frame when more bandwidth is available. However, not all regions in a frame are equally important to user perception. This paper proposed a user-oriented approach to facilitate scalable coding in spatial and temporal domains. By combining user attention and foveation models, the regions of user´s focus in a frame (spatial domain) or the segment of a video clip with steady saliency values (temporal domain) are prioritized as far as perceived quality is concerned.