X-ray CT Metal Artifact Reduction Using Wavelet Domain $L_{0}$ Sparse Regularization.
Abolfazl MehranianMohammad Reza AyArman RahmimHabib ZaidiPublished in: IEEE Trans. Medical Imaging (2013)
Keyphrases
- wavelet domain
- artifact reduction
- spatial domain
- compressed images
- dct domain
- projections onto convex sets
- denoising
- wavelet coefficients
- discrete wavelet transform
- wavelet transform
- multiscale
- human visual system
- image denoising
- multiresolution
- subband
- high frequency
- transform domain
- frequency domain
- image compression
- watermarking algorithm
- image quality
- sparse representation
- dictionary learning
- visual information
- maximum likelihood
- noisy images
- visual quality
- higher order
- compressive sensing
- object recognition
- image processing