An Efficient Orthonormalization-Free Approach for Sparse Dictionary Learning and Dual Principal Component Pursuit.
Xiaoyin HuXin LiuPublished in: Sensors (2020)
Keyphrases
- dictionary learning
- principal components
- sparse representation
- sparse coding
- principal component analysis
- dimensionality reduction
- natural images
- group sparsity
- dictionary learning for sparse
- sparse codes
- generative model
- principal component regression
- hyperplane
- sparsity constraints
- image representation
- linear combination
- test images
- covariance matrix
- linear classifiers
- compressive sensing
- computer vision
- face recognition
- multiscale
- signal processing
- image classification
- low dimensional
- super resolution
- unsupervised learning