Keyphrases
- object detection
- object recognition
- keypoints
- scale invariant feature transform
- feature descriptors
- shape context
- rotational symmetry
- local image descriptors
- sift descriptors
- scene understanding
- highly discriminative
- symmetry detection
- scale and rotation invariant
- computer vision
- category recognition
- face detection
- color descriptors
- object categories
- image retrieval
- image features
- multi class
- global features
- histograms of oriented gradients
- scene recognition
- feature points
- image matching
- edge detection
- orientation histogram
- shape retrieval
- edge information
- action detection
- background subtraction
- sift features
- shape recognition
- region descriptors
- scale invariant
- image descriptors
- shape descriptors
- texture descriptors
- feature detection
- pedestrian detection
- edge detector
- image representation
- multiscale
- feature extraction
- human detection
- fourier descriptors
- feature representation
- local binary pattern
- invariance properties
- natural images
- scale space