No Reference Image Sharpness Assessment Based on Global Color Difference Variation

查看全文 作　　者：Chenyang [1,2,3]SHI;Yandan [3,4]LIN

机构地区：[1]School of Artificial Intelligence,Anhui Polytechnic University,Wuhu 241000,China;[2]School of Mechanical Engineering,Anhui Polytechnic University,Wuhu 241000,China;[3]Department of Light Sources and Illuminating Engineering,Fudan University,Shanghai 200433,China;[4]Academy for Engineering&Technology,Fudan University,Shanghai 200433,China

出　　处：《Chinese Journal of Electronics》索引2024年第33卷第1期,共10页

基　　金：supported by the Research Start-up Foundation for Introduction of Talents of AHPU(Grant No.2021YQQ027);the Scientific Research Fund of AHPU(Grant No.Xjky20220003)。 摘　　要：Image quality assessment(IQA)model is designed to measure the image quality in consistent with subjective ratings by computational models.In this research,a valid no reference IQA(NR-IQA)model for color image sharpness assessment is proposed based on local color difference map in a color space.In the proposed model,the absolute color difference variation and relative color difference variation are combined to evaluate sharpness in YIQ color space(a color coordinate system for the development of the United States color television system).The difference between sharpest and blurriest spot of an image is represented by the absolute color difference variation,and relative color difference variation expresses the variation in the image content.Extensive experiments are performed on five publicly available benchmark synthetic blur databases and two real blur databases,and the results prove that the proposed model work better than the other state-of-the-art and latest NR-IQA models for the prediction accuracy on blurry images.Besides,the model maintains the lowest computational complexity. 关键词：Image sharpness assessment No reference Color difference variation Image quality

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No Reference Image Sharpness Assessment Based on Global Color Difference Variation

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