Removal of random-valued impulse noise using overcomplete DCT dictionary.
Bhabesh DekaDipranjan BaishnabPublished in: CUBE (2012)
Keyphrases
- sparse representation
- random valued impulse noise
- image restoration
- discrete cosine transform
- noise level
- sparse coding
- natural images
- linear combination
- gaussian noise
- impulse noise
- image compression
- image patches
- signal processing
- dct coefficients
- dct domain
- high dimensional data
- transform domain
- noisy pixels
- test images
- image processing
- noisy images
- filter bank
- image classification
- face recognition
- digital images
- compressed images
- computer vision
- sparse signal representation