DIFFERENTIAL CONTRAST BASED ADAPTIVE QUANTIZATION FOR PERCEPTUAL QUALITY OPTIMIZATION IN IMAGE CODING

被引:1
|
作者
Han, Jingning [1 ]
Chen, Cheng [1 ]
Galligan, Frank [1 ]
Massimino, Pascal [1 ]
Wilkins, Paul [1 ]
Chang, Wan-Teh [1 ]
Guyon, Yannis [1 ]
Xu, Yaowu [1 ]
Bankoski, James [1 ]
机构
[1] Google LLC, Mountain View, CA 94043 USA
关键词
Image coding; perceptual quality;
D O I
10.1109/ICIP46576.2022.9897648
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
We consider the perceptual quality optimization in image coding through adaptive quantization. A differential contrast model is proposed to measure the visual sensitivity to the quantization distortions, and thereby deriving the spatially adaptive quantization strategy. A complementary quantitative approach is provided as a means to efficiently calculate the proposed differential contrast model. The resulting visual quality improvement is experimentally demonstrated.
引用
收藏
页码:3026 / 3030
页数:5
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