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Proceedings Paper

Detection method of an automobile number plate using optical rank order HMT
Author(s): Ha-Woon Lee; Jung-Tag Gong; Jong-Chan Kim; Soo-Joong Kim
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Paper Abstract

A new method to detect an automobile registration plate using optical rank order hit-miss transform (HMT) is proposed. In this method, the optimal structuring elements are designed to recognize the corners of the registration plate and then they are applied to the optical rank order HMT. Optical rank order HMT gives better performance than the standard HMT in noisy or cluttered images. We present that whether the input images have random noise, clutter or not, the proposed method can easily detect automobile registration plates, and also when the detected plate have noise or clutter, they are presented after eliminating the noise or clutter from the detected plates by morphological opening and closing. Computer simulation shows the proposed method has good detection capability and we confirmed this by optical experiment.

Paper Details

Date Published: 27 March 1997
PDF: 11 pages
Proc. SPIE 3073, Optical Pattern Recognition VIII, (27 March 1997); doi: 10.1117/12.270356
Show Author Affiliations
Ha-Woon Lee, Dongyang Univ. (South Korea)
Jung-Tag Gong, Kyungpook National Univ. (South Korea)
Jong-Chan Kim, Kyungpook Junior College (South Korea)
Soo-Joong Kim, Kyungpook National Univ. (South Korea)


Published in SPIE Proceedings Vol. 3073:
Optical Pattern Recognition VIII
David P. Casasent; Tien-Hsin Chao, Editor(s)

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