6533b7d9fe1ef96bd126c019
RESEARCH PRODUCT
Local symmetries of digital contours from their chain codes
José M. IñestaM. BuendíaMariáángeles Sartisubject
Chain codeFeature extractionParallel algorithmEdge detectionChain (algebraic topology)Artificial IntelligenceFeature (computer vision)Signal ProcessingPoint (geometry)Computer Vision and Pattern RecognitionSymmetry (geometry)AlgorithmSoftwareMathematicsdescription
In this work symmetry is evaluated as a numeric feature for each point of a contour, using only the positions of a local vicinity of points. A measurement is defined, named as Local Symmetric Deficiency (LSD), so that the lower this quantity is, the higher the symmetry will be in the local region considered. This approach is very simple and it is based on a suitable manipulation of the chain code of the curve. Its computational cost is very low and it has the advantages of a parallel algorithm, since values for LSD can be computed for each point independently.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-10-01 | Pattern Recognition |