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题名: No-Reference Image Quality Assessment for Defocus Restoration
作者: Zhang CS(张程硕); Shi ZL(史泽林); Xu BS(徐保树); Feng B(冯斌)
作者部门: 光电信息技术研究室
会议名称: 1st International Conference on Multimedia and Image Processing, ICMIP 2016
会议日期: June 1-3, 2016
会议地点: Bandar Seri Begawan, Brunei
会议录: Proceedings - 2016 1st International Conference on Multimedia and Image Processing, ICMIP 2016
会议录出版者: IEEE
会议录出版地: Piscataway, NJ, USA
出版日期: 2016
页码: 51-56
收录类别: EI ; CPCI(ISTP)
ISBN号: 978-1-4673-8940-2
关键词: No-reference image quality assessment ; defocus ; image restoration
摘要: Even though both full-reference and no-reference image quality assessments are extensively applied to evaluate degraded images e.g. blurred, noised, compressed and distorted, few of them especially the no-reference species are suitable for image restoration. The goal of this work is to propose a no-reference quality assessment for defocus restoration. Because of that most optical systems have circular aperture, the defocusing is an isotropic filter to blur the edges. As a result, the change of edge location detected by Canny algorithm will be small after defocusing. Otherwise, smooth regions will be smoother after defocusing. Therefore, the locations of edges and smooth regions will not change. We get those invariant points from defocus image to form two point sets, one containing edge points, another containing the centers of smooth regions. The two point sets are used to form patches in restoration image, and image patch structure metric is proposed for those patches to score the local restoration quality. At last, the quality assessment for defocus restoration is modeled as an overall measure by all of the patches structure metric. Experiments on simulated defocus image and real defocus images are presented to demonstrate the effectiveness of this assessment.
语种: 英语
产权排序: 1
WOS记录号: WOS:000386830000010
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.sia.cn/handle/173321/19297
Appears in Collections:光电信息技术研究室_会议论文

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Recommended Citation:
Zhang CS,Shi ZL,Xu BS,et al. No-Reference Image Quality Assessment for Defocus Restoration[C]. 见:1st International Conference on Multimedia and Image Processing, ICMIP 2016. Bandar Seri Begawan, Brunei. June 1-3, 2016.
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文件名: No-Reference Image Quality Assessment for Defocus Restoration.pdf
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