ISBN: 978-981-11-0008-6 DOI: 10.18178/wcse.2016.06.090
An Improved Diagonal Up-left Prediction Method for HEVC Intra Coding
Abstract— Intra prediction of HEVC supports up to 33 directional modes compared to 8 such modes in
H.264/AVC. Employing many more prediction orientations, HEVC can reflect the directional properties of a
coding picture more accurately. Although these directional modes are well designed and show good coding
performance, the directional prediction strategy can still be improved. In this paper, an alternative diagonal
up-left prediction mode is introduced. Two diagonal left reference samples are utilized to predict the mode
with appropriate prediction weights. With negligible computing cost, the proposed prediction mode achieves
better coding performance than the same directional mode of HEVC.
Index Terms— intra coding, diagonal up-left prediction mode, HEVC.
Changnian Chen, Aiwu Shi, Nan Su, E Chen
College of Mathematics and Computer, Cloud Computing & Big Data Research Center, Wuhan Textile University, CHINA
Cite: Changnian Chen, Aiwu Shi, Nan Su, E Chen, "An Improved Diagonal Up-left Prediction Method for HEVC Intra Coding," Proceedings of 2016 6th International Workshop on Computer Science and Engineering, pp. 536-539, Tokyo, 17-19 June, 2016.