【正文】
北京聯(lián)合大學(xué) 畢業(yè)設(shè)計畢業(yè)設(shè)計題目: 基于MATLAB的車牌定位算法設(shè)計摘 要車牌自動識別系統(tǒng)是現(xiàn)代智能交通管理的重要組成部分,可用于各級各類車輛管理場所。與傳統(tǒng)的車輛管理方法相比,它大大地提高了管理效率與水平,節(jié)省了人力、物力,實現(xiàn)了車輛管理的科學(xué)化、規(guī)范化,對交通治安起到了一定的保障作用,因此有著廣泛的應(yīng)用前景。車牌自動識別系統(tǒng)一般包括車牌定位、字符分割和字符識別三個模塊。它的研究主要涉及到模式識別、人工智能、計算機(jī)視覺、數(shù)字圖像處理等眾多學(xué)科領(lǐng)域。車牌的定位、分割更是該系統(tǒng)的關(guān)鍵,由于圖像場景的復(fù)雜性以及車牌位置和圖像質(zhì)量的不可預(yù)知性,牌照定位分割系統(tǒng)一直都未做到令人滿意,所以有必要對其進(jìn)行進(jìn)一步的研究。本文通過對大量資料的搜集、整理,總結(jié)了近年來國內(nèi)外在車牌定位分割領(lǐng)域的最新研究成果和進(jìn)展,對車牌區(qū)域的固有特征和目前的車牌定位、分割技術(shù)進(jìn)行了分析和比較,提出了自己的觀點并設(shè)計了一個車牌定位、分割系統(tǒng)。本文利用MATLAB工具實現(xiàn)車牌定位算法研究。利用灰度修正.濾波和圖像增強(qiáng)等處理方法.較好地消除了圖像的噪音,提高了圖像質(zhì)量。通過對車牌特征的研究,利用邊緣掃描方法實現(xiàn)車牌定位。關(guān)鍵詞:車牌定位;傾斜矯正;圖像預(yù)處理;圖像分割A(yù)bstractVehicles License Plate Recognition System(LPRS),which is all important part of the contemporary Intelligent Transportation System(ITS),can be applied to vehicle management situations of all levels and all kinds.Compared with traditional vehicles managements,LPRS has greatly improved the efficiency and level of management and saved manpower and material resources,laying a good foundation for the realization of standardized management.We Call safely e to the conclusion that LPRS has already improved the order of the traffic system, illustrating a good prospect of application for us.Generally, the LPR system consists of three modules: license plate location、character segmentation and character recognition.Its study concerns various disciplines including Pattern Recognition、Artificial Intelligence, Computer Vision、Digital Image Processing and SO 011.It is the location and segmentation of license plates standing at the heart of LPR system.Considering that the plexity of image background and the uncertainly of plate position and image quality,it is necessary to do further research into it. By summarizing the latest research achievements and development in the area of license plate location and segmentation both here and abroad,this paper, after making a deep parison between the intrinsic characteristics of license plate and the current location and segmentation technologies on it,proposes its own understanding and designs a new LP location and segmentation system.The paper introduces a method of car license plate location and realizes a system of car license plate location based on MATLAB.The preprocessing methods including gray level modification,filter and image enhancement,are used to improve image quality and cut image noise.Car license plate location is realized by the method of edge detection and according to the car plate feature.key words:License plate location; Slant correction; Image preprocess ;car Image Segmentation.目錄摘要 1Abstract 2引言 4一、緒論 51 . 1 、課題的背景和意義 51 . 國內(nèi)外研究狀況 61 . 車牌識別系統(tǒng)的應(yīng)用范圍 7二、系統(tǒng)概述 9三、硬件系統(tǒng)設(shè)計 硬件系統(tǒng)設(shè)計 各模塊功能 1各模塊與DSP的接口設(shè)計 11.系統(tǒng)原理圖和生成的PCB板 16四、在MATLAB環(huán)境下實現(xiàn)車牌定位的功能 1車牌定位系統(tǒng)介紹 1圖像預(yù)處理 1灰度化 1圖像邊緣檢測 2形態(tài)學(xué)處理 2車牌提取 23五、結(jié)論 25問題和不足: 26不足之處: 28六、主要參考資料如下: 28七、致謝 29引言隨著我國交通運輸?shù)牟粩喟l(fā)展,智能交通系統(tǒng)(Intelligent Traffic System,簡稱ITS)的推廣變的越來越重要,而作為ITS的一個重要組成部分,車輛牌照識別系統(tǒng)(vehicle license plate recognition system,簡稱LPR)對于交通管理、治安處罰等工作的智能化起著十分重要的作用。它可廣泛應(yīng)用于交通流量檢測,交通控制于誘導(dǎo)