Hierarchical sparse coding based on spatial pooling and multi-feature fusion.
Chaoqun WengHongxing WangJunsong YuanPublished in: ICME (2013)
Keyphrases
- sparse coding
- subspace learning
- spatial pyramid matching
- sparse representation
- unsupervised learning
- natural images
- image classification
- linear combination
- discriminative power
- image representation
- feature space
- generative model
- visual words
- image patches
- multiscale
- feature extraction
- dimensionality reduction
- image features
- face recognition
- higher order
- probabilistic model
- pattern recognition