Hierarchical discriminative sparse coding via bidirectional connections.
Zhengping JiWentao HuangGarrett T. KenyonLuís M. A. BettencourtPublished in: IJCNN (2011)
Keyphrases
- sparse coding
- discriminative dictionary
- sparse codes
- discriminative power
- unsupervised learning
- object category recognition
- dictionary learning
- natural images
- sparse representation
- image classification
- linear combination
- visual categorization
- generative model
- image representation
- single image super resolution
- semi supervised
- high dimensional
- feature space
- visual words
- image patches
- deep belief networks
- visual recognition
- feature extraction
- linear classifiers
- feature selection
- alternating optimization
- test images
- language model
- text mining
- small number
- ground truth
- object recognition
- multiscale
- high quality
- face recognition