Reduced quaternion matrix-based sparse representation and its application to colour image processing.
Zhongyun BaoShan GaiPublished in: IET Image Process. (2019)
Keyphrases
- sparse representation
- image processing
- signal processing
- dictionary learning
- sparse coding
- reconstruction error
- fourier transform
- face recognition
- compressive sensing
- image classification
- random projections
- compressed sensing
- pattern recognition
- negative matrix factorization
- sparse reconstruction
- sparse approximations
- regularized least squares
- image patches
- high dimensional data
- test images
- joint optimization
- denoising
- piecewise smooth
- computer vision
- image representation
- image denoising
- total variation
- multiscale
- image segmentation
- data mining
- image restoration
- unsupervised learning
- sparse learning
- sparse codes