Sparse representation for image classification by using feature dictionary.
Wei ZhangJiaojie LiYupu YangPublished in: ICDIP (2013)
Keyphrases
- sparse representation
- image classification
- image features
- image representation
- dictionary learning
- sparse coding
- bag of words
- sparse codes
- compressive sensing
- random projections
- feature extraction
- face recognition
- learned dictionary
- regularized least squares
- image patches
- compressed sensing
- reconstruction error
- dimensionality reduction
- negative matrix factorization
- feature vectors
- joint optimization
- signal processing
- test images
- visual words
- piecewise smooth
- high dimensional data
- sparse reconstruction
- neural network
- sparse approximations
- pattern recognition
- norm minimization
- object recognition
- image super resolution
- high dimensional
- probabilistic model