首先要說(shuō)的本論文里面的效果是嘎嘎的??！
汽車號(hào)牌識(shí)別系統(tǒng)設(shè)計(jì)


摘要
隨著二十一世紀(jì)到來(lái)，經(jīng)濟(jì)快速發(fā)展和人們生活水平顯著提高，汽車逐漸成為家庭的主要交通工具。汽車的產(chǎn)量快速增多，車輛流動(dòng)也變得越來(lái)越頻繁，因此給交通帶來(lái)了嚴(yán)重問(wèn)題，如交通堵塞、交通事故等，智能交通系統(tǒng)(Intelligent Transportation System)的產(chǎn)生就是為了從根本上解決交通問(wèn)題。在智能交通系統(tǒng)中車牌識(shí)別技術(shù)占有重要位置，車牌識(shí)別技術(shù)的推廣普及必將對(duì)加強(qiáng)道路管理、城市交通事故、違章停車、處理車輛被盜案件、保障社會(huì)穩(wěn)定等方面產(chǎn)生重大而深遠(yuǎn)的影響。
該設(shè)計(jì)主要研究基于MATLAB軟件的汽車號(hào)牌設(shè)別系統(tǒng)設(shè)計(jì)，系統(tǒng)主要包括圖像采集、圖像預(yù)處理、車牌定位、字符分割、字符識(shí)別五大核心部分。系統(tǒng)的圖像預(yù)處理模塊是將圖像經(jīng)過(guò)圖像灰度化、圖像增強(qiáng)、邊緣提取、二值化等操作，轉(zhuǎn)換成便于車牌定位的二值化圖像；利用車牌的邊緣、形狀等特征，再結(jié)合Roberts 算子邊緣檢測(cè)、數(shù)字圖像、形態(tài)學(xué)等技術(shù)對(duì)車牌進(jìn)行定位；字符的分割采用的方法是將二值化后的車牌部分進(jìn)行尋找連續(xù)有文字的塊，若長(zhǎng)度大于設(shè)定的閾值則切割，從而完成字符的分割；字符識(shí)別運(yùn)用模板匹配算法完成。以上每個(gè)功能模塊用MATLAB軟件實(shí)現(xiàn)，最后識(shí)別出車牌，在研究設(shè)計(jì)的同時(shí)對(duì)其中出現(xiàn)的問(wèn)題進(jìn)行具體分析、處理，并尋求更優(yōu)的方法。

關(guān)鍵字：MATLAB，車牌識(shí)別系統(tǒng)，字符識(shí)別，圖像處理








Car number plate recognition system design
Compyter science and technology professional 2009 Cenli
Instructor Liuzhixian
Abstract
With the arrival of the twenty-first century, the rapid economic development and people's living standards have markedly improved, the car gradually become the main means of transport for the family. Rapid increase in production of motor vehicles, vehicular movement has become increasingly frequent, and therefore poses a serious problem to the traffic, such as traffic congestion, traffic accidents, the generation of the Intelligent Transportation System (Intelligent Transportation System) In order to fundamentally solve the problem of traffic problem. License plate recognition technology in the intelligent transportation system occupies an important position, a significant and far-reaching impact on the promotion of universal license plate recognition technology is bound to strengthen road management, urban traffic accidents, illegal parking, and deal with the theft of the vehicle, and safeguard social stability.
The design study based on MATLAB software car number plate set five core part of the design of other systems, the system mainly includes image acquisition, image preprocessing, license plate location, character segmentation, character recognition. The image pre-processing module of the system is the image gray image, image enhancement, edge detection, binarization operation, convert to facilitate the binary image of the license plate location; license plate edge, shape and other characteristics, combined with Roberts character segmentation method is used the plate after the binarization part Find the continuous text block, if the length is greater than the set threshold value, cutting operator the sub edge detection, digital image, morphology, such as technical positioning of the plate; thus completing the segmentation of the characters; completion of the use of character recognition template matching algorithm. Each functional module using MATLAB software, the final identification of the license plate, specific analysis of the issues that may arise in the study design, processing, and to seek a better method.
Keyword: MATLAB，License plate recognition，Character recognition，Image processing
目錄
1.概述 1
1.1 研究背景及意義 1
1.2 汽車號(hào)牌識(shí)別原理 1
1.3 論文架構(gòu) 1
1.4 MTATLAB簡(jiǎn)介 2
1.4.1概述MATLAB 2
1.4.2 MATLAB語(yǔ)言特點(diǎn) 2
2.需求分析 4
2.1車牌識(shí)別系統(tǒng)國(guó)內(nèi)外研究現(xiàn)狀 4
2.2車牌識(shí)別難點(diǎn) 5
2.3系統(tǒng)功能描述 6
2.4可行性分析 6
2.5運(yùn)行環(huán)境分析 7
2.5.1系統(tǒng)硬件分析 7
2.5.2系統(tǒng)軟件分析 7
3.概要設(shè)計(jì) 9
3.1總體設(shè)計(jì) 9
3.2總體功能模塊 9
3.3 運(yùn)行設(shè)計(jì) 10
4.詳細(xì)設(shè)計(jì) 11
4.1 圖像采集 11
4.2 圖像預(yù)處理 11
4.2.1圖像灰度化 12
4.2.2圖像增強(qiáng) 13
4.2.3 Roberts邊緣檢測(cè) 14
4.3 車牌定位與分割 15
4.3.1車牌定位 15
4.3.2車牌分割 19
4.3.3車牌進(jìn)一步處理 20
4.4 字符分割和歸一化 21
4.4.1字符分割 21
4.4.2字符歸一化 22
4.5 字符識(shí)別 22
5.汽車號(hào)牌識(shí)別系統(tǒng)實(shí)現(xiàn)與分析 25
5.1系統(tǒng)實(shí)現(xiàn) 25
5.2系統(tǒng)分析 28
6.總結(jié) 30
7.致謝 31
8.參考文獻(xiàn) 32
附錄：程序清單 34