Image Recovery Algorithm Based on Learned Dictionary. (12th August 2014)

• Record Type: Journal Article
• Authors: Zhu, Xinghui; Kui, Fang
• Other Names: Dai Binxiang Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2014(2014)
• Publication Date: 2014-08-12
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2014/964835
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : We proposed a recovery scheme for image deblurring. The scheme is under the framework of sparse representation and it has three main contributions. Firstly, considering the sparse property of natural image, the nonlocal overcompleted dictionaries are learned for image patches in our scheme. And, then, we coded the patches in each nonlocal clustering with the corresponding learned dictionary to recover the whole latent image. In addition, for some practical applications, we also proposed a method to evaluate the blur kernel to make the algorithm usable in blind image recovery. The experimental results demonstrated that the proposed scheme is competitive with some current state-of-the-art methods.