Keyphrases
- image representation
- multiscale
- image classification
- image content
- bag of words
- image features
- quadtree
- object recognition
- sparse coding
- human faces
- scene recognition
- feature representations
- visual words
- image retrieval
- face images
- receptive fields
- sparse representation
- low level features
- co occurrence
- spatial pyramid
- region segmentation
- hierarchical structure
- image classification and retrieval
- visual recognition tasks
- bag of features
- natural scenes
- feature selection
- decision trees