| Autor: |
Horn BK; Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139., Weldon EJ |
| Jazyk: |
angličtina |
| Zdroj: |
IEEE transactions on pattern analysis and machine intelligence [IEEE Trans Pattern Anal Mach Intell] 1986 May; Vol. 8 (5), pp. 665-8. |
| DOI: |
10.1109/tpami.1986.4767839 |
| Abstrakt: |
A closed curve in the plane can be described in several ways. We show that a simple representation in terms of radius of curvature versus normal direction has certain advantages. In particular, convolutional filtering of the extended circular image leads to a closed curve. Similar filtering operations applied to some other representations of the curve do not guarantee that the result corresponds to a closed curve. In one case, where a closed curve is produced, it is smaller than the original. A description of a curve can be based on a sequence of smoothed versions of the curve. This is one reason why smoothing of closed curves is of interest. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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