Azimuth Ambiguities Suppression Using Group Sparsity and Nonconvex Regularization for Sliding Spotlight Mode: Results on QILU-1 SAR Data.
Guoru ZhouMingqian LiuZhongqiu XuMingzhi WangBingchen ZhangYirong WuPublished in: IGARSS (2022)
Keyphrases
- group sparsity
- structured sparsity
- sar data
- synthetic aperture radar
- sar images
- sparse coding
- low rank
- dictionary learning
- sar imagery
- convex optimization
- sparse representation
- convex optimization problems
- learning problems
- image reconstruction
- edge detection
- compressive sensing
- statistical learning
- objective function
- edge detector
- natural images
- group lasso
- optimization problems
- linear combination
- unsupervised learning
- maximum likelihood
- image classification
- matrix factorization
- multiscale
- regression model
- regularization methods
- missing data
- pairwise