W-Tree Indexing for Fast Visual Word Generation.
Miaojing ShiRuixin XuDacheng TaoChao XuPublished in: IEEE Trans. Image Process. (2013)
Keyphrases
- visual words
- object retrieval
- bag of words
- image classification
- bag of visual words
- visual vocabulary
- visual phrases
- vocabulary tree
- image representation
- bag of features
- discriminative power
- co occurrence
- image features
- keypoints
- sift descriptors
- image retrieval
- visual content
- weighting scheme
- scene classification
- object categories
- feature space
- visual dictionary
- spatial relationships
- text retrieval
- soft assignment
- gaussian mixture model
- spatial information
- information retrieval
- action recognition
- index structure
- text classification
- data mining
- image database
- feature vectors
- feature extraction