A novel direction-based JND model for perceptual HEVC intra coding

作者：Zeng Zhipeng; Zeng Huanqiang^*; Chen Jing; Hou Junhui; Cai Canhui; Ma Kai Kuang

来源：25th International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2017, 2017-11-06 To 2017-11-09.

DOI：10.1109/ISPACS.2017.8266470

• High Efficiency Video Coding (HEVC)
• Human visual system (HVS)
• Just noticeable distortion
• Just noticeable distortion models
• Perceptual HEVC
• Rate distortion optimization (RDO)
• Rate-distortion optimization
• Visual qualities

In High efficiency video coding (HEVC), rate distortion optimization (RDO) technique plays a crucial part in improving video coding efficiency. However, the perceptual characteristics of human visual system (HVS) are not taken into consideration in the process of RDO. In this paper, given the prediction patterns of intra frame, a novel direction-based just-noticeable-distortion (DRJND) model as a perceptual feature is introduced to HEVC encoder, which adaptively adjust Lagrange multiplier. Meanwhile, the rate-distortion (RD) cost also needs to be perceptually calculated once again. Experimental results demonstrate that compared with the anchor HM12.0, the proposed algorithm has achieved better experimental results in rate-SSIM performance while keeping its visual quality of the same test sequences.

• 出版日期2018
• 单位Nanyang technological university; 香港城市大学