Abstract: Spatially scalable extension video coding provides a way to deliver one video at different resolutions. The proposed methods in this paper make use of the texture features of the base layer to reduce the time of the partition of CU and gain an effective intra prediction mode, as well as take advantage of the correlations between intra prediction mode information in base layer and enhancement layer to improve the intra mode coding in enhancement layer based on HEVC. Compared to simulcast high resolution coding, the enhancement average luma BD-rate is up to 35.1% in the proposed mode, so that the inter-layer intra prediction can display better and reduce the redundancy.

Key words: HEVC, SVC, inter-layer intra prediction mode