4 papers
A Dual Sparse Decomposition Method for Image Denoising
Hong Sun, Chen-guang Liu, Cheng-wei Sang
This article addresses the image denoising problem in the situations of strong noise. We propose a dual sparse decomposition method. This method makes a sub-dictionary decompositio…
Sar image despeckling based on nonlocal similarity sparse decomposition
Chengwei Sang, Hong Sun, Quisong Xia
This letter presents a method of synthetic aperture radar (SAR) image despeckling aimed to preserve the detail information while suppressing speckle noise. This method combines the…
Sparse Signal Subspace Decomposition Based on Adaptive Over-complete Dictionary
Hong Sun, Chengwei Sang, Didier Le Ruyet
This paper proposes a subspace decomposition method based on an over-complete dictionary in sparse representation, called "Sparse Signal Subspace Decomposition" (or 3SD) method. Th…
Principal Basis Analysis in Sparse Representation
Hong Sun, Cheng-Wei Sang, Chen-Guang Liu
This article introduces a new signal analysis method, which can be interpreted as a principal component analysis in sparse decomposition of the signal. The method, called principal…