Polygonal Approximation of Contour Shapes Using Corner Detectors
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidad Nacional Autónoma de México
2009
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| _version_ | 1876467417554616320 |
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| author | Hermilo Sánchez-Cruz |
| author_facet | Hermilo Sánchez-Cruz |
| contents | Polygonal Approximation of Contour Shapes Using Corner Detectors Hermilo Sánchez-Cruz Ernesto Bribiesca Ingeniería Binary objects 3OT chain code pattern strings corner detection polygonal approximation A great amount of corner detectors that appear in literature are based on using the Freeman chain code of eight directions, which is used to represent contour shapes. We propose a new method for corner detection based on a three¿symbol chain code representation, which requires lower storage memory and an easy way to obtain shape corners. We compare it with five existing methods, which are well known in the literature, giving our method a better performance. Furthermore, in order to reconstruct the original shapes through polygonal approximations, we propose an error parameter to quantify the efficiency. This can be accomplished by considering the redundancy of points produced when looking for corners and when computing the difference between the original region and the approximated polygon. 2009 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47413020003 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.3 Vol.7 |
| format | Artículo científico |
| id | redalyc_47413020003 |
| institution | Redalyc |
| language | en |
| publishDate | 2009 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Polygonal Approximation of Contour Shapes Using Corner Detectors Hermilo Sánchez-Cruz Ingeniería Binary objects 3OT chain code pattern strings corner detection polygonal approximation Polygonal Approximation of Contour Shapes Using Corner Detectors Hermilo Sánchez-Cruz Ernesto Bribiesca Ingeniería Binary objects 3OT chain code pattern strings corner detection polygonal approximation A great amount of corner detectors that appear in literature are based on using the Freeman chain code of eight directions, which is used to represent contour shapes. We propose a new method for corner detection based on a three¿symbol chain code representation, which requires lower storage memory and an easy way to obtain shape corners. We compare it with five existing methods, which are well known in the literature, giving our method a better performance. Furthermore, in order to reconstruct the original shapes through polygonal approximations, we propose an error parameter to quantify the efficiency. This can be accomplished by considering the redundancy of points produced when looking for corners and when computing the difference between the original region and the approximated polygon. 2009 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47413020003 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.3 Vol.7 |
| title | Polygonal Approximation of Contour Shapes Using Corner Detectors |
| topic | Ingeniería Binary objects 3OT chain code pattern strings corner detection polygonal approximation |
| url | https://www.redalyc.org/articulo.oa?id=47413020003 |