Keyphrases
- visual words
- bag of words
- feature space
- image classification
- bag of visual words
- visual vocabulary
- image representation
- visual phrases
- object categories
- discriminative power
- image retrieval
- co occurrence
- scene classification
- kernel function
- keypoints
- image descriptors
- image features
- bag of features
- spatial information
- object retrieval
- visual content
- sift descriptors
- bag of words models
- gaussian mixture model
- text classification
- spatial relationships
- object recognition
- support vector
- visual dictionary
- action recognition
- soft assignment
- machine learning
- image database
- pairwise
- vocabulary tree
- spatial pyramid
- feature extraction