NDLI: Automatic superresolution image reconstruction based on hybrid MAP-POCS

Content Provider	IEEE Xplore Digital Library
Author	Tao Wang Yan Zhang Yong-Sheng Zhang Li-Xia Lin
Copyright Year	2007
Description	Author affiliation: Zhengzhou Inst. of Surveying & Mapping, Zhengzhou (Tao Wang; Yan Zhang; Yong-Sheng Zhang; Li-Xia Lin)
Abstract	Image superresolution (SR) reconstruction refers to methods that increase image spatial resolution by fusing information from either a sequence of temporal adjacent images or multi-source images from different sensors. In the paper we propose a hybrid MAP-POCS method for automatic image SR reconstruction, which firstly estimates the unknown point spread function (PSF) and an approximation for the original ideal image, and then sets up the HMRF image prior model and assesses its inhomogeneous control parameter through maximum likelihood (ML) estimation, finally automatically computes the regularized solution by two-phase iterative solution. Hybrid MAP-POCS estimates computed on simulation images, actual video sequence and actual satellite images show dramatic visual and quantitative improvements over bilinear interpolation and ML-POCS reconstruction results with sharp edges, correctly restored textures and a high PSNR improvement.
Starting Page	426
Ending Page	431
File Size	1364052
Page Count	6
File Format	PDF
ISBN	9781424410651
DOI	10.1109/ICWAPR.2007.4420706
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-11-02
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Maximum likelihood estimation Image resolution Computational modeling Video sequences low-resolution (LR) Image reconstruction Strontium Image sensors superresolution(SR) Automatic control reconstruction spatial resolution Iterative methods Spatial resolution High-resolution (HR)
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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