【正文】 was programmed with VC++ using above principles. The license location and the digital characters recognition in the license plate were implemented.Keywords: license location, characters segmentation, BP nerve work, license plate recognition, VC++ 西南科技大學(xué)本科生畢業(yè)論文 III 目 錄第 1 章 緒論 ......................................................................................................................1 課題研究背景 ..............................................................................................................1 車輛牌照識(shí)別系統(tǒng)原理 ..............................................................................................1 車輛牌照識(shí)別在國(guó)內(nèi)外研究現(xiàn)狀 ..............................................................................2 本文主要工作及內(nèi)容安排 ..........................................................................................3第 2 章 車輛牌照的定位方法 .....................................................................................4 車輛牌照?qǐng)D像的預(yù)處理 ..............................................................................................4 256 色位圖灰度化 .................................................................................................4 灰度圖像二值化 ...................................................................................................5 消除背景干擾去除噪聲 .......................................................................................6 車輛牌照的定位方法簡(jiǎn)介 ..........................................................................................6 系統(tǒng)采用的定位方法 ..................................................................................................7 車輛牌照的水平定位 ...........................................................................................7 車輛牌照的垂直定位 ...........................................................................................7 定位的算法實(shí)現(xiàn) .................................................................................................10 實(shí)驗(yàn)結(jié)果分析 ............................................................................................................12第 3 章 車輛牌照的字符分割 .................................................................................13 車牌預(yù)處理 ................................................................................................................13 去邊框處理 .........................................................................................................13 去噪聲處理 .........................................................................................................13 梯度銳化 .............................................................................................................15 傾斜調(diào)整 .............................................................................................................16 字符分割方法簡(jiǎn)介 ....................................................................................................17 系統(tǒng)采用的分割方法 ................................................................................................19 算法介紹 .............................................................................................................19 算法的實(shí)現(xiàn) .........................................................................................................20 字符分割實(shí)驗(yàn)結(jié)果 ....................................................................................................21 西南科技大學(xué)本科生畢業(yè)論文 IV 第 4 章 特征提取與字符識(shí)別 .................................................................................22 字符的特征提取 ........................................................................................................22 字符的識(shí)別方法簡(jiǎn)介 ................................................................................................23 系統(tǒng)采用的識(shí)別方法 ................................................................................................24 人工神經(jīng)網(wǎng)絡(luò)簡(jiǎn)介 .............................................................................................24 BP 神經(jīng)網(wǎng)絡(luò)識(shí)別車牌 .....................................................................................25 BP 神經(jīng)網(wǎng)絡(luò)識(shí)別算法實(shí)現(xiàn) .............................................................................28 實(shí)驗(yàn)結(jié)果分析 ............................................................................................................29總結(jié) ....................................................................................................................................32致謝 ....................................................................................................................................33參考文獻(xiàn) ...........................................................................................................................34 西南科技大學(xué)本科生畢業(yè)論文 1第 1 章 緒論 課題研究背景現(xiàn)代社會(huì)已經(jīng)進(jìn)入信息時(shí)代，計(jì)算機(jī)技術(shù)、通信技術(shù)和計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)的不斷發(fā)展，自動(dòng)化信息處理能力的不斷提高，在人們社會(huì)活動(dòng)和生活的各個(gè)領(lǐng)域得到了廣泛的應(yīng)用，在這種情況下，作為信息來(lái)源的自動(dòng)檢測(cè)、圖像識(shí)別技術(shù)越來(lái)越受到人們的重視。關(guān)鍵詞：車牌定位；字符分割；BP神經(jīng)網(wǎng)絡(luò)；車牌識(shí)別； VC++ 西南科技大學(xué)本科生畢業(yè)論文 II Research and Realization of License Plate Recognition AlgorithmAbstract: In recent years, with the vigorous development of the national economy，there are more and more construct in the domestic expressway, urban road, and parking area. The requisition on the traffic control, safety management improves day by day. Therefore, license plate recognition technology has the particularly important practical application value in the public security and the traffic control. In the paper, a preliminary research was made on the license location, characters segment and characters recognition of the license plate recognition. On the license location，the projection was used to locate the license plate。在學(xué)習(xí)并掌握了數(shù)字圖像處理和模式識(shí)別的一些基本原理后，使用 VC++ 軟件利用以上原理針對(duì)車牌識(shí)別任務(wù)進(jìn)行編程。本文對(duì)車牌識(shí)別系統(tǒng)中的車牌定位、字符分割和字符識(shí)別進(jìn)行了初步研究。 Q260046902 專業(yè)做論文 西南科技大學(xué)畢業(yè)設(shè)計(jì)（論文）題目名稱：車輛牌照?qǐng)D像識(shí)別算法研究與實(shí)現(xiàn) 西南科技大學(xué)本科生畢業(yè)論文