Keyphrases
- sift features
- image classification
- visual words
- visual features
- bag of words
- iris recognition
- mean shift
- bag of features
- image features
- image representation
- image search
- keypoints
- feature extraction
- web images
- feature detection
- sift descriptors
- discriminative power
- scale invariant feature transform
- feature matching
- multi label
- sparse coding
- sparse representation
- machine learning