Wavelet Domain Multidictionary Learning for Single Image Super-Resolution
Joint Authors
Wu, Xiaomin
Fan, Jiulun
Xu, Jian
Wang, Yanzi
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-06-15
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Information Technology and Computer Science
Abstract EN
Image super-resolution (SR) aims at recoveringthe high-frequency (HF) details of a high-resolution(HR) image according to the given low-resolution (LR)image and some priors about natural images.
Learningthe relationship of the LR image and its correspondingHF details to guide the reconstruction of the HR imageis needed.
In order to alleviate the uncertainty inHF detail prediction, the HR and LR images are usuallydecomposed into 4 subbands after 1-level discretewavelet transformation (DWT), including an approximationsubband and three detail subbands.
From ourobservation, we found the approximation subbands ofthe HR image and the corresponding bicubic interpolatedimage are very similar but the respective detailsubbands are different.
Therefore, an algorithm to learn4 coupled principal component analysis (PCA) dictionariesto describe the relationship between the approximationsubband and the detail subbands is proposedin this paper.
Comparisons with various state-of-the-artmethods by experiments showed that our proposedalgorithm is superior to some related works.
American Psychological Association (APA)
Wu, Xiaomin& Fan, Jiulun& Xu, Jian& Wang, Yanzi. 2015. Wavelet Domain Multidictionary Learning for Single Image Super-Resolution. Journal of Electrical and Computer Engineering،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1068125
Modern Language Association (MLA)
Wu, Xiaomin…[et al.]. Wavelet Domain Multidictionary Learning for Single Image Super-Resolution. Journal of Electrical and Computer Engineering No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1068125
American Medical Association (AMA)
Wu, Xiaomin& Fan, Jiulun& Xu, Jian& Wang, Yanzi. Wavelet Domain Multidictionary Learning for Single Image Super-Resolution. Journal of Electrical and Computer Engineering. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1068125
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1068125