Robust Sparse Representation in Quaternion Space.
Yulong WangKit Ian KouCuiming ZouYuan Yan TangPublished in: IEEE Trans. Image Process. (2021)
Keyphrases
- sparse representation
- dictionary learning
- norm minimization
- illumination variations
- sparse coding
- face recognition
- compressive sensing
- image patches
- reconstruction error
- sparsity constraints
- basis vectors
- compressed sensing
- object tracking
- image classification
- signal processing
- sparse approximations
- dimensionality reduction
- random projections
- high dimensional data
- image representation
- regularized least squares
- negative matrix factorization
- subspace learning
- joint optimization
- sparse reconstruction
- piecewise smooth
- partial occlusion
- robust face recognition
- image reconstruction
- high dimensional
- test images
- low dimensional
- data sets