Fast CU partition and intra mode prediction method for HEVC

Abstract

The high-efficiency video coding (HEVC) standard adopts an exhaustive decision algorithm based on a recursive standardized quad-tree coding unit, a prediction unit, and a transform unit. Consequently, it is possible to achieve substantial coding performance. Nevertheless, a significant computational complexity is generated. This paper’s goal is to reduce HEVC intra coding process computational complexity when designing a fast CU partition module based on the Support Vector Machine (SVM) approach and a Gradient-based fast intra-prediction mode module. Experiment results show that the proposed algorithm saves 50.97% of encoding time while increasing compression efficiency by 0.90%.