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| Content Provider | Springer Nature Link |
|---|---|
| Author | Kuang, Yin Zhang, Lei Yi, Zhang |
| Copyright Year | 2014 |
| Abstract | In this paper, we propose a combinational algorithm for the removal of zero-mean white and homogeneous Gaussian additive noise from a given image. Image denoising is formulated as an optimization problem. This is iteratively solved by a weighted basis pursuit (BP) in the closed affine subspace. The patches extracted from a given noisy image can be sparsely and approximately represented by adaptively choosing a few nearest neighbors. The approximate reconstruction of these denoised patches is performed by the sparse representation on two dictionaries, which are built by a discrete cosine transform and the noisy patches, respectively. Experiments show that the proposed algorithm outperforms both BP denoising and Sparse K-SVD. This is because the underlying structure of natural images is better captured and preserved. The results are comparable to those of the block-matching 3D filtering algorithm. |
| Starting Page | 2151 |
| Ending Page | 2171 |
| Page Count | 21 |
| File Format | |
| ISSN | 0278081X |
| Journal | Circuits, Systems, and Signal Processing |
| Volume Number | 33 |
| Issue Number | 7 |
| e-ISSN | 15315878 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2014-01-23 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Image denoising Optimization problem Weighted BPDN K-SVD Sparse K-SVD Closed affine subspace learning Circuits and Systems Electrical Engineering Signal, Image and Speech Processing Electronics and Microelectronics, Instrumentation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Signal Processing |
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