Objective picture quality scale (PQS) for image coding

被引:206
作者
Miyahara, M [1 ]
Kotani, K
Algazi, VR
机构
[1] JAIST, Sch Informat Sci, Dept Informat Proc, Nomi Ishikawa 9231292, Japan
[2] Univ Calif Davis, Ctr Image Proc & Integrated Computing, Davis, CA 95616 USA
基金
日本学术振兴会; 美国国家科学基金会;
关键词
image compression; image quality; psychophysics; quality metrics;
D O I
10.1109/26.718563
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new methodology for the determination of an objective metric for still image coding is reported. This methodology is applied to obtain a picture quality scale (PQS) for the coding of achromatic images over the full range of image quality defined by the subjective mean opinion score (MOS), This PQS takes into account the properties of visual perception for both global features and localized disturbances. PQS closely approximates the MOS, with a correlation coefficient of more than 0.92, as compared to 0.57 obtained using the conventional weighted mean-square error (WMSE). Extensions and applications of the methodology and of the resulting metric are discussed.
引用
收藏
页码:1215 / 1226
页数:12
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