【正文】 論文題目： 數(shù)字圖像處理技術(shù)在指紋識別中的應(yīng)用研 究 目錄 摘要 .............................................................................................................................................. I Abstract.........................................................................................................................................II 第 1 章 緒論 ................................................................................................................................. 1 課題背景 ........................................................................................................................ 1 研究現(xiàn)狀 ......................................................................................................................... 1 目的和意義 ...................................................................................................................... 2 第 2 章 指紋圖像預(yù)處理 ................................................................................................................ 4 指紋的概述 ..................................................................................................................... 4 ....................................................................................................... 4 .............................................................................................................. 5 .............................................................................................................. 6 圖像平滑 ........................................................................................................................ 8 ....................................................................................................... 8 .......................................................................................................... 8 Matlab 仿真 ..........................................................................................10 圖像腐蝕 ....................................................................................................................... 11 ......................................................................................................... 11 .................................................................................................. 11 ......................................................................................................... 11 Matlab 仿真 ..........................................................................................12 圖像銳化 .......................................................................................................................13 .............................................................................................................13 .............................................................................................................14 算子 ..........................................................................................................15 Matlab 仿真 ...............................................................................15 灰度圖像二值化 .............................................................................................................20 ...........................................................................................20 Matlab 仿真 ...................................................................................20 指紋圖像骨架的細(xì)化 ......................................................................................................21 指紋圖像細(xì)化簡介 ................................................................................................21 . 細(xì)化算法的 Matlab 仿真 ....................................................................................22 第 3 章 指紋特征的提取 ...............................................................................................................24 指紋圖像特征值的提取 ...................................................................................................24 指紋圖像偽特征值的剔除 ................................................................................................24 第 4 章 總結(jié)與展望 ......................................................................................................................26 總結(jié) ..............................................................................................................................26 展望 ..............................................................................................................................26 致謝 ............................................................................................................................................29 參考文獻(xiàn) .....................................................................................................................................28 福建農(nóng)林大學(xué)東方學(xué)院計(jì)算機(jī)科學(xué)系畢業(yè)設(shè)計(jì)（論文） 2 附錄 1 配準(zhǔn)函數(shù) Matlab 程序 .......................................................................................................30 附錄 2 Matlab 仿真程序 ..................................................................................................33 I 摘要 在信息化時(shí)代，身份鑒別將越來越重要，應(yīng)用也變得日益廣泛。而指紋作為一種人所固有的生理特征，擁有其唯一性和終生不變性的特點(diǎn)以及指紋識別技術(shù)的可行性與實(shí)用性，指紋識別已成為當(dāng)前最方便、最流行、最可靠的身份認(rèn)證技術(shù)之一。基于指紋識別技術(shù)的身份識別系統(tǒng)以其獨(dú)特的成本低廉性及技術(shù)優(yōu)越性正被廣泛被應(yīng)用在各個(gè)場合。 而指紋圖像 預(yù)處理是指紋識別的前提 ,它的好壞直接影響到指紋識別的成敗。本文將就指紋識別系統(tǒng)的圖像預(yù)處理進(jìn)行研究。在指紋圖像預(yù)處理的過程中由于指紋圖像質(zhì)量問題 ,本文將根據(jù)指紋圖像的特征提出假設(shè)，再根據(jù)假設(shè)提出了增強(qiáng)指紋圖像的算法，這些算法簡單且能有效地解決指紋圖像預(yù)處理問題。 用 Matlab 實(shí)現(xiàn)這種方法，不僅能分步對指紋圖像預(yù)處理算法進(jìn)行仿真測試，又可以很直觀地看到圖像預(yù)處理算法的效果。本文介紹用 matlab 實(shí)現(xiàn)對指紋圖像的平滑處理、腐蝕處理、 sobel 算子銳化處理、圖像旋轉(zhuǎn)、旋轉(zhuǎn)后配準(zhǔn)相加、指紋圖像的二值化細(xì)化等。 關(guān)鍵詞： 圖像預(yù)處理；圖像增強(qiáng)；平滑；配準(zhǔn)；二值化；細(xì)化 II Abstract In the information age, the authentication will be more and more important, the application has bee increasingly widespread. Fingerprint inherent physiological characteristics as a person, with the feasibility and practicality