α-shapes for local feature detection.
Christos VarytimidisKonstantinos RapantzikosYannis AvrithisStefanos D. KolliasPublished in: Pattern Recognit. (2016)
Keyphrases
- feature detection
- planar objects
- deformable shapes
- detection algorithm
- preprocessing
- scale space
- object recognition
- detection method
- keypoints
- feature detectors
- image features
- image analysis
- robust detection
- shape matching
- shape model
- phase congruency
- image description
- ridge detection
- shape analysis
- computer vision
- machine learning
- shape descriptors
- radial symmetry
- facial expressions
- neural network