Efficient algorithm for sparse coding and dictionary learning with applications to face recognition.
Zhong ZhaoGuocan FengPublished in: J. Electronic Imaging (2015)
Keyphrases
- dictionary learning
- sparse coding
- sparse representation
- single image super resolution
- sparse representation based classification
- face recognition
- learning algorithm
- natural images
- discriminative power
- object category recognition
- group sparsity
- image representation
- linear combination
- image classification
- motion estimation
- machine learning
- sparsity constraints
- denoising
- k means
- high dimensional data
- feature space
- image patches
- multiscale
- similarity measure
- unsupervised learning
- high dimensional
- feature extraction
- sparse codes
- facial expressions