動態車牌辨識系統之實作研究

The Implementation of a Dynamic Car License Recognition System

 

廖鴻圖         邱孟佑         陳詩雅

Horng-twu Liaw   Meng-yu Chiu   Shi-ya Chen

世新大學資訊管理學系

木柵路一段17巷1號

台北市116文山區

htliaw@cc.shu.edu.tw

cmy@cc.shu.edu.tw

 

 

摘要

        近年來,國內交通公共工程陸續完工通車;當這些硬體基礎建設完成後,很多相關的軟體措施如超速違規取締系統、道路旅行時間預測系統、公車優先觸動系統、停車管理系統…等ITS (Intelligent Transportation System)智慧型運輸系統儼然已成為未來發展的趨勢。由於數位影像技術近年來的突飛猛進,加上國內外發展文字辨識的文章如雨後春筍般地大量出現,因此在文數字辨識的領域有顯著的突破,但在此類型的應用中,影像擷取技術及辨識演算法仍有許多進步的空間;因此,我們的研究開發重點便放在要如何改善動態影像擷取及快速辨識的要求上,除了利用新式快速的影像擷取系統以縮短車牌辨識時間外,並研究發展辨識演算法來提高其辨識率。最後,並將此車牌辨識功能給予模組化,作為 ITS或各類警政相關應用系統之參考依據。

關鍵詞:數位影像處理,影像擷取卡,光學字元辨識。

 

 


Abstract

Recently, lots of domestic public constructions have been completed. After that, many ITS (Intelligent Transportation System) such as overspeed detecting system, prediction system of the road travelling time, the bus priority touching system, parking management system, etc, will become the trend in the feature. There is a common feature in these related application systems that they need the key component about AVI (Auto Vehicle Identify). To date, many recognition systems have been proposed. The main research point of the previous work is how to successfully recognize the number. Therefore, The available technique and resource decide the recognition time and recognition rate. Today, the rapid development of digital image processing technique has increased the ability of alphanumeric recognition. Moreover, there still exist many improving area at image retrieve technique and recognition algorithm. Therefore, in this paper, we propose some new techniques to improve the dynamic image retrieval and speed up the recognition. Furthermore, we give the module of the function for the car license recognition in order to provide the basis for the other ITS application systems.

KeywordsDigital image processing, Image grab card, Optical character recognition.