多標的汽機車車牌辨識系統之研究

王振興

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多標的汽機車車牌辨識系統之研究

A Multi-target Vehicle License Plate Recognition System

王振興 , Masters　　Advisor：李錫捷　　

繁體中文

車牌定位；車牌辨識；字元辨識；類神經網路； Vehicle License Plate Recognition ； License Plate Detection ； Character Recognition ； Neural Networks ； SimNet

Abstract │ Reference (20) │ Times Cited (11) │ Altmetrics

Abstract 〈TOP〉

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The study of vehicle license plate recognition has been undergone for decades, but studies for identifying vehicle colors, license plates for multi-target vehicles, and license plates for motorcycles are still being greatly missed. It is considered important to study the license plate recognition also for motorcycles since in many countries the number of motorcycles is even more than that of cars. Since the pictures taken by surveillance cameras hardly contain only a single vehicle, it is inevitable to analyze and identify all the vehicles appeared in the picture. Moreover, if the pictures take outside, it is also known for their complex background objects such as trees, billboards, traffic signs, etc. which will impose difficulties for license plate recognition.
           In this study, a system is proposed for multi-target vehicle license plate recognition. This system is capable of recognizing license plate as well as the color of a vehicle with a complex background. The vehicle license plate recognition system may be divided into three major components, namely, license plate detection, character segmentation, and character recognition. To demonstrate the performance of the system, there are 894 different images used for testing. The average accuracy is 97.65% for the single-target license plate detection and 96.59% for the multi-target license plate detection. In addition, the average accuracy is 98.02% for the character recognition phase, and 82.96% for car colors classification phase.

Reference ( 20 ) 〈TOP〉

[1] T. Naito, T. Tsukada, K. Yamada, K. Kozuka, and S. Yamamoto, "Robust License-Plate Recognition Method for Passing Vehicles Under Outside Environment", IEEE Transactions on Vehicular Technology, Vol.49, No.6, November 2000.
連結：
[2] D.S. Kim, and S.I. Chien, "Automatic car license plate extraction using modified generalized symmetry transform and image warping", Kyungpook National University, School of Electronic and Electrical Engineering, Korea, 2001.
連結：
[5] 仲崇實，「影像處理與類神經乏晰方法於車輛牌照自動辨識之應用研究」，私立元智大學，資訊管理研究所，碩士論文，民國87年。
連結：
[7] N. Otsu, "A Threshold Selection Method from Gray-Level Histograms", IEEE Transactions on System,Man,and Cybernetics, vol. SMC-9, 1979, pp.62-66.
連結：
[9] 魏銪志，「動態多標的車牌辨識系統之研究」，私立元智大學，資訊管理研究所，碩士論文，民國89年。
連結：

Times Cited (11) 〈TOP〉

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