Super resolution via sparse representation in l1 framework

Sudarshan, S and Babu, R V (2012) Super resolution via sparse representation in l1 framework. In: 8th Indian Conference on Computer Vision, Graphics and Image Processing, 16-19, December 2012, Mumbai; India.

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Abstract

This paper proposes a new high speed Single Image Super Resolution algorithm and also suggests modifications that can perform super resolution on video sequences. Embarking from recent successful algorithms proposed by Yang et. al.[18] and Elad et. al.[19], it adds a number of enhancements that improve both PSNR of the recovered image and performance of the dictionary training. It also proposes an incremental dictionary update strategy that enhances results on video sequences by improving the dictionary quality at each frame. The algorithm does not necessarily need a training image set, though it can use one to enhance PSNR of the upscaled image. It automatically picks the patches that would benefit from super resolution, ignoring others, thus enhancing speed. It also partially accounts for spatial transformations of patches in the trained dictionary, further enhancing performance.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: sparse optimization; spatial video super resolution; super resolution; New high; Single images; Sparse representation; Spatial transformation; Training image; Video sequences; Video super-resolution
Subjects: Others > Optical design & engineering
Depositing User: Mr. Siva Shankar K
Date Deposited: 15 Oct 2014 05:50
Last Modified: 15 Oct 2014 05:50
URI: http://raiith.iith.ac.in/id/eprint/452
Publisher URL: http://dx.doi.org/10.1145/2425333.2425410
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