Image denoising in hybrid wavelet and quincunx diamond filter bank domain based on Gaussian scale mixture model.
S. Amala ShanthiC. Helen SulochanaT. LathaPublished in: Comput. Electr. Eng. (2015)
Keyphrases
- filter bank
- image denoising
- mixture model
- wavelet coefficients
- subband
- denoising
- gaussian mixture model
- perfect reconstruction
- multiresolution
- wavelet transform
- multiscale
- wavelet domain
- wavelet decomposition
- wavelet bases
- maximum likelihood
- lifting scheme
- wavelet packet
- noisy images
- contourlet transform
- natural images
- em algorithm
- high frequency
- frequency domain
- probabilistic model
- gaussian noise
- image compression
- feature vectors
- discrete wavelet transform
- denoising algorithm
- low pass
- denoising methods
- bit rate
- expectation maximization
- wavelet filters
- scale space
- generative model
- shift invariant
- image processing
- zero crossing
- unsupervised learning
- linear filters
- computationally efficient
- language model
- model selection
- signal processing
- wavelet basis
- gaussian distribution
- gaussian filter
- image segmentation
- noise level
- additive noise
- image restoration
- higher order
- computer vision