An on-line signature verification based on timely nonlinear sampling and sparse representation.
Zhihua YangYishu LiuPublished in: SPAC (2014)
Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- face recognition
- compressed sensing
- image classification
- orthogonal matching pursuit
- joint optimization
- image patches
- reconstruction error
- sparse reconstruction
- negative matrix factorization
- compressive sensing
- regularized least squares
- signature verification
- subspace learning
- sparse approximations
- random sampling
- piecewise smooth
- random projections
- dimensionality reduction
- sparsity constraints
- object tracking
- signal processing
- image representation
- high dimensional data
- parameter space
- principal component analysis
- sparse coefficients
- image processing
- norm minimization
- image data
- pattern recognition