Inverse problems with time-frequency dictionaries and non-white Gaussian noise.
Matthieu KowalskiAlexandre GramfortPublished in: EUSIPCO (2015)
Keyphrases
- inverse problems
- white gaussian noise
- image denoising
- partial differential equations
- denoising
- convex optimization
- total variation
- image reconstruction
- frequency domain
- global optimization
- noisy images
- natural images
- sparse representation
- signal processing
- image processing
- optimization methods
- wavelet transform
- optimization problems
- emission tomography
- wavelet coefficients
- evolutionary algorithm
- computationally expensive
- neural network
- higher order
- smoothness constraint
- multiscale
- computer vision