A fast mode selection for depth modelling modes of intra depth coding in 3D-HEVC

The 3D extension of the high efficiency video coding (3D-HEVC) standard adopts new depth modelling modes (DMMs) to provide more accurate prediction for depth map intra coding, while the mode selection for DMMs causes huge computational complexity. In this paper, we develop the fast algorithm for DMMs selection to reduce the complexity. Firstly, the evaluation results of intra conventional modes are utilized to determine whether DMMs should be skipped. Secondly, golden ratio is adopted to simplify DMMs searching. Results show that golden ratio can reduce 70.44% time for DMMs searching. Experimental results show that our algorithm reduces 37.40% encoding time on average with only 0.40% increase on synthesized BD-rate.