Gradient Hard Thresholding Pursuit for Sparsity-Constrained Optimization.
Xiaotong YuanPing LiTong ZhangPublished in: ICML (2014)
Keyphrases
- constrained optimization
- hard thresholding
- denoising
- image denoising
- constrained optimization problems
- wavelet coefficients
- constraint handling
- penalty function
- objective function
- unconstrained optimization
- edge detection
- sparse representation
- penalty functions
- wavelet denoising
- lagrange multipliers
- iterative methods
- wavelet domain
- natural images
- wavelet transform
- gaussian noise
- standard deviation
- image enhancement
- evolutionary algorithm