Image restoration using overlapping group sparsity on hyper-Laplacian prior of image gradient.
Kyongson JonYing SunQixin LiJun LiuXiaofei WangWensheng ZhuPublished in: Neurocomputing (2021)
Keyphrases
- image restoration
- image gradient
- sparse coding
- edge preserving
- total variation
- low contrast
- object boundaries
- image structure
- markov random field
- super resolution
- optical flow
- image processing
- prior knowledge
- regularization parameter
- maximum a posteriori
- input image
- compressive sensing
- energy functional
- edge detection
- linear combination
- image regions
- low resolution
- high quality
- feature extraction