Optimization Method of HEVC Intra Coding based on Micro Video

Haixiao Gong1, Jie He1, Mei Tang2

1School of Data Science and Software Engineering, Guangxi Colleges and Universities Key Laboratory of Image Processing and Intelligent Information System, Wuzhou University, Wuzhou, 543002, China

2Youth League Committee, Wuzhou Vocational College, Wuzhou, 543002, China

Abstract: In order to reduce the complexity of efficient video coding, a HEVC fast intra coding algorithm is proposed. According to the texture complexity of video image, skip ｏｒ stop the division of coding units of some sizes in advance to reduce the PU depth traversal interval; at the same time, according to the statistical characteristics of prediction mode and generation value after the rough selection process, adopt threshold method ｏｒ gradient mode histogram method to further screen out the prediction mode with less possibility after the rough selection, so as to reduce the final rate distortion cost The number of intra prediction modes is calculated to further reduce the coding complexity. The experimental results show that compared with the original HEVC platform, the algorithm in this paper reduces the coding time on average, increases the bit rate about, and reduces the peak signal-to-noise ratio in the full frame coding mode, which is conducive to real-time application.

Keywords: Microvideo; HEVC; Intra coding; Coding optimization