Efficient nonlocal linear image denoising: Bilevel optimization with Nonequispaced Fast Fourier Transform and matrix-free preconditioning.
Andrés Miniguano-TrujilloJohn W. PearsonBenjamin D. GoddardPublished in: CoRR (2024)
Keyphrases
- image denoising
- denoising
- fast fourier transform
- natural images
- noisy images
- total variation
- frequency domain
- image processing
- wavelet coefficients
- wavelet domain
- denoising algorithm
- nonlocal means
- fourier transform
- denoising methods
- higher order
- accelerated proximal gradient
- multiresolution
- floating point
- discrete fourier transform
- image quality
- pattern recognition