Name
Title | ||
|---|---|---|
Revisiting Convolutional Sparse Coding for Image Denoising: From a Multi-Scale Perspective |
Abstract | ||
|---|---|---|
Recently, convolutional sparse coding (CSC) has shown great success in many image processing tasks, such as image super-resolution and image separation. However, it performs poorly in image denoising task. In this letter, we provide a new insight for CSC denoising by revisiting the CSC from a multi-scale perspective. We propose a multi-scale CSC model for image denoising. By unrolling the multi-scale solution into a learnable network, we obtain an interpretable lightweight multi-scale network, namely MCSCNet. Experimental results show that the proposed MCSCNet significantly advances the denoising performance, with an average PSNR improvement of 0.32 dB over the state-of-the-art (SOTA) CSC based method. In addition, our MCSCNet is on par with many SOTA deep learning based methods, with less network parameters and lower FLOPs. The ablation study also validates the effectiveness of the multi-scale CSC mechanism. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/LSP.2022.3175096 | IEEE SIGNAL PROCESSING LETTERS |
Keywords | DocType | Volume |
Image denoising, Dictionaries, Convolutional codes, Task analysis, Convolution, Image reconstruction, Mathematical models, Convolutional sparse coding, image denoising | Journal | 29 |
ISSN | Citations | PageRank |
1070-9908 | 0 | 0.34 |
References | Authors | |
0 | 3 | |