NDLI: Superresolution of remotely sensed images with anisotropic features

Content Provider	IEEE Xplore Digital Library
Author	Czaja, W. Murphy, J.M. Weinberg, D.
Copyright Year	2015
Description	Author affiliation: Dept. of Math., Univ. of Maryland, College Park, MD, USA (Czaja, W.; Murphy, J.M.; Weinberg, D.)
Abstract	We consider the problem of superresolution for remotely sensed images. Our ambition is to develop an algorithm that efficiently increases the resolution of an image without introducing artifacts or blurring, and without using any additional information, such as images of the same scene in different modalities or sub-pixel shifts of the same image at lower resolutions. The approach developed in this article is based on analysis of the directional features present in the image that is to be superesolved. The harmonic analytic technique of shearlets is employed in order to efficiently capture the directional information present in the image, which is then used to provide smooth, accurate images at higher resolutions. Our algorithm is compared to the standard superresolution method of bicubic interpolation. We test our algorithm on a remotely sensed image of Gulfport, Mississippi. Our results indicate the superior performance of shearlet-based superresolution algorithms, compared to bicubic interpolation.
Starting Page	317
Ending Page	321
File Size	362154
Page Count	5
File Format	PDF
ISBN	9781467373531
DOI	10.1109/SAMPTA.2015.7148904
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interpolation Image edge detection Image processing Superresolution Signal processing algorithms Anisotropic dictionaries Shearlets Spatial resolution Signal resolution Remote sensing
Content Type	Text
Resource Type	Article

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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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