Fast intra mode decision algorithm based on texture orientation detection in HEVC

作者：

Highlights：

• The texture orientation is detected by computing the local directional variance along a set of co-lines.

• The co-lines use a set of twelve rational slopes with different orientation to the HEVC angular prediction directions.

• The directional variance is computed in a sliding window including the reference pixels.

• According with the dominant gradient detected, a reduced set of candidate modes are selected to be further evaluated.

摘要

•The texture orientation is detected by computing the local directional variance along a set of co-lines.•The co-lines use a set of twelve rational slopes with different orientation to the HEVC angular prediction directions.•The directional variance is computed in a sliding window including the reference pixels.•According with the dominant gradient detected, a reduced set of candidate modes are selected to be further evaluated.

论文关键词：Texture orientation,Directional variance,Rational slope,Co-line,Intra- prediction,HEVC

论文评审过程：Received 14 August 2015, Revised 9 March 2016, Accepted 9 March 2016, Available online 16 March 2016, Version of Record 24 March 2016.

论文官网地址：https://doi.org/10.1016/j.image.2016.03.002