Keyphrases
- shape descriptors
- invariant features
- invariant descriptors
- affine transformation
- affine invariant
- affine invariance
- image transformations
- feature descriptors
- discriminative power
- invariance properties
- keypoints
- feature extraction
- local image descriptors
- shape retrieval
- action recognition
- image retrieval
- feature representation
- moment invariants
- shape representation
- shape context
- shape description
- planar objects
- invariant properties
- multiresolution
- object recognition
- data sets
- rotation and scale invariant