Similarity-invariant signatures for partially occluded planar shapes
International Journal of Computer Vision
Differential invariants of planar curves and recognizing partially occluded shapes
IAPR Proceedings of the international workshop on Visual form: analysis and recognition
Geometric invariants and object recognition
International Journal of Computer Vision
Invariant signatures for planar shape recognition under partial occlusion
CVGIP: Image Understanding
Using affine invariants on perspective projections of plane curves
Computer Vision and Image Understanding
The characterization and detection of skewed symmetry
Computer Vision and Image Understanding
Foundations of semi-differential invariants
International Journal of Computer Vision
Recognition of planar shapes under affine distortion
International Journal of Computer Vision
Differential and Numerically Invariant Signature Curves Applied to Object Recognition
International Journal of Computer Vision
Noise-Resistant Invariants of Curves
IEEE Transactions on Pattern Analysis and Machine Intelligence
An Algorithm for Binary Contour Objects Representation and Recognition
ICIAR '08 Proceedings of the 5th international conference on Image Analysis and Recognition
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In this paper we propose to use invariant signatures of polygonal approximations of smooth curves for projective object recognition. The proposed algorithm is not sensitive to the curve sampling scheme or density, due to a novel re-sampling scheme for arbitrary polygonal approximations of smooth curves. The proposed re-sampling provides for weak-affine invariant parameterization and signature. Curve templates characterized by a scale space of these weak-affine invariant signatures together with a metric based on a modified Dynamic Programming algorithm can accommodate projective invariant object recognition.