Redefining self-similarity in natural images for denoising using graph signal gradient.
Jiahao PangGene CheungWei HuOscar C. AuPublished in: APSIPA (2014)
Keyphrases
- natural images
- denoising
- image denoising
- frequency domain
- denoising methods
- wavelet packet
- power spectrum
- natural scenes
- wavelet transform coefficients
- noisy images
- image processing
- total variation
- image patches
- wavelet domain
- sparse coding
- signal processing
- denoising algorithm
- test images
- receptive fields
- statistics of natural images
- image statistics
- linear filters
- spatial domain
- high frequency
- higher order
- scale invariant
- visual cortex
- visual quality
- compressed sensing
- nonlocal means
- computer vision
- zero crossing