Adaptive step-size fast iterative shrinkage-thresholding algorithm and sparse-spike deconvolution.
Shulin PanKe YanHaiqiang LanJosé BadalZiyu QinPublished in: Comput. Geosci. (2020)
Keyphrases
- step size
- thresholding algorithm
- variable step size
- soft thresholding
- adaptive filter
- convergence rate
- denoising
- cost function
- convergence speed
- image denoising
- wavelet coefficients
- wavelet domain
- total variation
- hessian matrix
- image restoration
- faster convergence
- steepest descent method
- blind source separation
- gradient method
- least mean square
- stochastic gradient descent
- wavelet shrinkage
- wavelet transform
- sparse representation
- spatial domain
- line search
- subband
- particle swarm optimization
- least squares
- quantization step
- global optimization
- multiscale