Relative SATD-based Minimum Risk Bayesian Framework for Fast Intra Decision of HEVC

2019 KSII Transactions on Internet and Information Systems  
High Efficiency Video Coding (HEVC) enables significantly improved compression performance relative to existing standards. However, the advance also requires high computational complexity. To accelerate the intra prediction mode decision, a minimum risk Bayesian classification framework is introduced. The classifier selects a small number of candidate modes to be evaluated by a rate-distortion optimization process using the sum of absolute Hadamard transformed difference (SATD). Moreover, the
more » ... oposed method provides a loss factor that is a good trade-off model between computational complexity and coding efficiency. Experimental results show that the proposed method achieves a 31.54% average reduction in the encoding run time with a negligible coding loss of 0.93% BD-rate relative to HEVC test model 16.6 for the Intra_Main common test condition.
doi:10.3837/tiis.2019.01.022 fatcat:vouxg7ls5bfchkikd7qv7p3zeu