New inter-layer intra prediction for spatial scalable video coding

Transmitting the digital audio/visual data over the internet becomes more and more popular lately. Due to the heterogeneous networks and different hardware devices, the users have different requirements for the same multimedia request. Thus, scalable video coding (SVC) was proposed and be-came an extension of H.264/AVC video coding standard. To make the bitstream embedded while ensuring good coding efficiency, SVC uses inter-layer prediction to remove the redundancy between the enhancement layer and the base layer, in addition to intra prediction and inter prediction. After analyzing the coding efficiency brought by each kind of inter-layer prediction, the importance of inter-layer intra prediction is recognized. In this paper, we propose a new inter-layer intra prediction to improve the coding efficiency for spatial scalability. Experimental results show that an average 4.92% bitrate reduction is achieved by the proposed inter-layer intra prediction..