第 1 章 绪论................................................................................................................................4
1.1 指纹识别概述 ................................................................................................................4
1.1.1 研究背景及意义 ..................................................................................................4
1.1.2 国内外研究状况 ..................................................................................................4
1.2 指纹识别的原理和方法 .................................................................................................5
1.2.1 指纹的基本知识 ..................................................................................................5
1.2.2 指纹识别的原理及应用 ......................................................................................7
1.3 Matlab 在指纹识别中的应用.........................................................................................8
第 2 章 指纹图像预处理............................................................................................................9
2.1 图像的分割 .....................................................................................................................9
2.1.1 图像归一化 ........................................................................................................10
2.1.2 图像分割的方向法 ............................................................................................11
2.1.3 图像分割的方差法 ............................................................................................12
2.2 图像的二值化 ..............................................................................................................13
2.2.1 方向图 ................................................................................................................13
2.2.2 指纹图像二值化 ................................................................................................14
2.2.3 静态阈值二值化 ................................................................................................15
2.2.4 基于方向场的二值化 ........................................................................................15
2.3 指纹图像的滤波 ..........................................................................................................17
2.4 图像细化 ......................................................................................................................20
2.4.1 快速细化算法 ....................................................................................................21
2.4.2 改进的 OPTA 算法............................................................................................21
第 3 章 图像特征提取和特征匹配..........................................................................................25
3.1 特征点提取 ..................................................................................................................25
3.2 找出特征点 ..................................................................................................................25
3.3 特征点匹配 ..................................................................................................................26
总结与展望................................................................................................................................30
致 谢......................................................................................................................................31
参考文献....................................................................................................................................32
附录 A 预处理代码 ..................................................................................................................33
附录 B 特征点提取代码 ..........................................................................................................37
附录 C 图像特征点代码 ..........................................................................................................39
附录 D 特征点匹配代码 ..........................................................................................................42
