Quaternion Collaborative and Sparse Representation With Application to Color Face Recognition.
Cuiming ZouKit Ian KouYulong WangPublished in: IEEE Trans. Image Process. (2016)
Keyphrases
- sparse representation
- face recognition
- dictionary learning
- sparse coding
- image patches
- subspace learning
- image classification
- joint optimization
- compressed sensing
- object tracking
- random projections
- reconstruction error
- regularized least squares
- piecewise smooth
- color images
- face images
- sparse reconstruction
- computer vision
- facial expressions
- signal processing
- negative matrix factorization
- compressive sensing
- high dimensional data
- test images
- single image
- image representation
- unsupervised learning
- sparse coefficients