A CU Fast Division Decision Algorithm with Low Complexity for HEVC

Abstract

In this paper, a CU (coding unit) fast division decision algorithm with low complexity is designed for HEVC (high efficiency video coding). First, CU block is divided into multiple small blocks, then the texture features of CU are calculated. Finally, the current CU is determined whether it needs to be divided in advance based on the calculation result. Experimental results show that the algorithm can save 23.87% encoding time and an average bit rate increase by 0.065%, and the peak signal-to-noise ratio is increased by 0.018dB. Moreover, which means the method can effectively reduce the computational complexity of intra prediction.