关键词: 感知视频编码, 人眼视觉系统, 显著性检测, 恰可失真模型

Abstract: Based on existing saliency detection algorithm, a model of joint estimation just noticeable distortion(JND) was proposed. This model not only makes full use of the advantage of the JND model, based on pixel domain and transform domain, but also employs the character of human visual system. The saliency detection algorithm used for saliency map, is employed to assign different weights to JND model, based on different brightness and color. The JND model based on pixel domain is mainly used on plain area, and the JND model, with masking effect and contrast sensitivity function, based on transform domain is used on texture area. The proposed model is introduced into the HEVC sample platform HM16.4. Experiments show that the proposed JND model, compared to HEVC standard, have the similar subjective quality.

Key words: perceptual video coding, human visual system, contrast sensitivity function, just noticeable distortion