Abstract
The coding efficiency of currently scalable video coding is very high at the cost of high coding complexity. Therefore, it is extremely important to improve the coding speed. By making use of the advantage of the quality scalable video coding (QSVC) structure, we propose a new fast Intra coding algorithm for QSVC. Based on the coding structure of QSVC, temporal, spatial and inter-layer correlations are employed together to predict candidate macro-block (MB) modes and their encoding orders to exclude low possible modes, and then three new early termination methods are proposed. In addition to MB modes, temporal, spatial and inter-layer correlations are also adopted together to estimate weight values and orders of all directional modes. Experimental results demonstrate that the coding speed of the proposed algorithm can be improved by 63.58 % in average with negligible coding loss.
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Acknowledgments
This work was supported by National Natural Science Foundation of China under Grant 61401247, China Postdoctoral Science Foundation under Grant 2013M 540953, Scientific and Technological Research Program of Chongqing Municipal Education Commission under Grant KJ130514, Nature Science Foundation Project of Chongqing under Grant cstc2012-jjA40060, and the Applied Basic Research Program of Sichuan Province under Grant No. 2014JY0168.
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Wang, D., Sun, Y., Bai, M. et al. Fast Intra prediction algorithm for quality scalable video coding. SIViP 10, 625–632 (2016). https://doi.org/10.1007/s11760-015-0786-0
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DOI: https://doi.org/10.1007/s11760-015-0786-0