Keyphrases
- image representation
- image classification
- supervised learning
- multiscale
- pattern representation
- feature representations
- learning algorithm
- feature space
- visual recognition
- scene classification
- unsupervised learning
- bag of words
- feature selection
- image classification and retrieval
- compressive sensing
- quadtree
- sparse coding
- visual words
- image retrieval
- pattern recognition
- spatial relationships
- spatial data
- support vector machine
- feature vectors
- scene recognition
- training set