In the field of image processing and machine vision, it is sometimes necessary to obtain common tangent line equations and tangent point coordinates from ellipses. A rolling tangent line method was proposed to obtain the 4 common tangent line equations and 8 tangent point coordinates from two ellipses in this paper. The principle of this method is simple and it is easy to program on a computer. Use this method to process two ellipse targets in an image and the experiment results show that the 4 common tangent equations and 8 tangent point coordinates can be obtained in high precision and the maximum execution time is less than 0.1 s.
CITATION STYLE
Feng, N., Jiang, T., Duan, S., & Sun, M. (2018). Obtaining Ellipse Common Tangent Line Equations by the Rolling Tangent Line Method. In Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST (Vol. 227 LNICST, pp. 569–576). Springer Verlag. https://doi.org/10.1007/978-3-319-73447-7_61
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