Keyphrases
- image features
- geometrical features
- feature descriptors
- input image
- image data
- low level
- feature vectors
- extracting features
- image noise
- object features
- normalized gradient
- contour segments
- image regions
- extracted features
- image segmentation
- spatial distribution
- highly discriminative
- scale invariant features
- image retrieval
- contour extraction
- multiscale
- single image
- keypoints
- test images
- edge map
- relative position
- image structure
- spatial information
- image classification
- corner points
- feature points
- singular points
- scale invariant feature transform
- feature space
- edge detection
- feature values
- fourier descriptors
- image representation
- invariant features
- image content
- vector space
- intensity gradient
- feature matching
- contour detection
- image sequences
- spatial location
- sift descriptors
- image gradient
- geometric features
- partial occlusion
- segmentation algorithm
- feature set
- filter responses
- active contour model
- image set
- deformable template
- minimal surface
- segmentation method
- active contours
- object recognition