Image denoising using group sparsity residual and external nonlocal self-similarity prior.
Zhiyuan ZhaXinggan ZhangQiong WangYechao BaiLan TangPublished in: CoRR (2017)
Keyphrases
- higher order
- group sparsity
- natural images
- sparse coding
- image denoising
- structured sparsity
- dictionary learning
- discriminative power
- high order
- low rank
- prior knowledge
- denoising
- sparse representation
- prior information
- maximum a posteriori
- evolutionary algorithm
- learning models
- statistical learning
- data sets
- compressive sensing
- feature space
- image segmentation