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A Variational Bayesian Superresolution Approach Using Adaptive Image Prior Model
Joint Authors
Zhao, Shengrong
Jin, Renchao
Xu, Xiangyang
Song, Enmin
Hung, Chih-Cheng
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-10-05
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
The objective of superresolution is to reconstruct a high-resolution image by using the information of a set of low-resolution images.
Recently, the variational Bayesian superresolution approach has been widely used.
However, these methods cannot preserve edges well while removing noises.
For this reason, we propose a new image prior model and establish a Bayesian superresolution reconstruction algorithm.
In the proposed prior model, the degree of interaction between pixels is adjusted adaptively by an adaptive norm, which is derived based on the local image features.
Moreover, in this paper, a monotonically decreasing function is used to calculate and update the single parameter, which is used to control the severity of penalizing image gradients in the proposed prior model.
Thus, the proposed prior model is adaptive to the local image features thoroughly.
With the proposed prior model, the edge details are preserved and noises are reduced simultaneously.
A variational Bayesian inference is employed in this paper, and the formulas for calculating all the variables including the HR image, motion parameters, and hyperparameters are derived.
These variables are refined progressively in an iterative manner.
Experimental results show that the proposed SR approach is very efficient when compared to existing approaches.
American Psychological Association (APA)
Zhao, Shengrong& Jin, Renchao& Xu, Xiangyang& Song, Enmin& Hung, Chih-Cheng. 2015. A Variational Bayesian Superresolution Approach Using Adaptive Image Prior Model. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1073905
Modern Language Association (MLA)
Zhao, Shengrong…[et al.]. A Variational Bayesian Superresolution Approach Using Adaptive Image Prior Model. Mathematical Problems in Engineering No. 2015 (2015), pp.1-13.
https://search.emarefa.net/detail/BIM-1073905
American Medical Association (AMA)
Zhao, Shengrong& Jin, Renchao& Xu, Xiangyang& Song, Enmin& Hung, Chih-Cheng. A Variational Bayesian Superresolution Approach Using Adaptive Image Prior Model. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1073905
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1073905