Image noise level estimation by searching for smooth patches with discrete cosine transform.
Hayato KataseTakuro YamaguchiTakanori FujisawaMasaaki IkeharaPublished in: MWSCAS (2016)
Keyphrases
- discrete cosine transform
- noise level
- noise estimation
- denoising algorithm
- image blocks
- image data
- discrete fourier transform
- input image
- jpeg images
- low light conditions
- multiscale
- image classification
- blocking artifacts
- transform domain
- noisy images
- noise reduction
- post processing
- estimation algorithm
- natural images
- edge detection
- image segmentation
- salt pepper
- image sequences
- dct domain
- gaussian noise
- image compression
- dct coefficients
- image processing
- low light
- denoising
- compressed images
- computational complexity
- pattern recognition
- similarity measure
- test images
- filter bank
- image regions