基于PCA的人脸识别matlab_matlab_matlab例程_数值算法/人工智能下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/62684ab84c65f41259823b9a/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62684ab84c65f41259823b9a/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">沈阳理工大学学士学位论文</div><div class="t m0 x2 h4 y3 ff1 fs1 fc0 sc0 ls0 ws0">摘 要</div><div class="t m0 x3 h5 y4 ff1 fs2 fc0 sc0 ls0 ws0">随着现代社会的发展，各个方面对快速有效的自动身份验证的要求日益迫切。</div><div class="t m0 x4 h5 y5 ff1 fs2 fc0 sc0 ls0 ws0">由于生物特征是人的内在属性，具有很强的自身稳定性和个体差异性，因此是身</div><div class="t m0 x4 h5 y6 ff1 fs2 fc0 sc0 ls0 ws0">份验证的理想依据。这其中，利用人脸特征又是最自然直接的手段，相比其他生</div><div class="t m0 x4 h5 y7 ff1 fs2 fc0 sc0 ls0 ws0">物特征，它具有直接、友好、方便的特点，易于为用户接受。人脸识别概念可简</div><div class="t m0 x4 h5 y8 ff1 fs2 fc0 sc0 ls0 ws0">单的描述为：给定某一场景的静态图片或动态视频图像，根据所存储的脸面数据</div><div class="t m0 x4 h5 y9 ff1 fs2 fc0 sc0 ls0 ws0">库识别或确认一个或更多的人。在计算机视觉领域里，人脸识别过程分为人脸检</div><div class="t m0 x4 h5 ya ff1 fs2 fc0 sc0 ls0 ws0">测、特征提取、识别或确认三部分完成。</div><div class="t m0 x3 h5 yb ff1 fs2 fc0 sc0 ls0 ws0">本文主要研究基于主成分分析的人脸识别，并建立了人脸在线识别系统。主</div><div class="t m0 x4 h5 yc ff1 fs2 fc0 sc0 ls0 ws0">要内容包括人脸分割，人脸库的建立，预处理，基于PCA的特征提取以及算法研</div><div class="t m0 x4 h5 yd ff1 fs2 fc0 sc0 ls0 ws0">究。重点研究了人脸库的建立，人脸图像的预处理及PCA的算法。PCA是一种非</div><div class="t m0 x4 h5 ye ff1 fs2 fc0 sc0 ls0 ws0">常流行和实用的数据分析技术，最重要的应用是对原有数据进行简化，被称为应</div><div class="t m0 x4 h5 yf ff1 fs2 fc0 sc0 ls0 ws0">用线形代数最有价值的结果之一。在实验中我们发现基于PCA的人脸识别系统的</div><div class="t m0 x4 h5 y10 ff1 fs2 fc0 sc0 ls0 ws0">识别率很高，可以达到百分之九十，所以基于PCA的人脸识别算法的实现的研究</div><div class="t m0 x4 h5 y11 ff1 fs2 fc0 sc0 ls0 ws0">还是很有意义的。</div><div class="t m0 x4 h5 y12 ff1 fs2 fc0 sc0 ls0 ws0">关键词：在线人脸识别; PCA; 图像预处理</div><div class="t m0 x5 h6 y13 ff2 fs1 fc0 sc0 ls0 ws0">Abstract</div><div class="t m0 x6 h7 y14 ff2 fs2 fc0 sc0 ls0 ws0">W i t h t h e d e v e l o p m e n t o f m o d e r n s o c i e t y, t h e r e i s a n i n c r e a s i n g d e m a n d f o r f a s t a n d</div><div class="t m0 x4 h7 y15 ff2 fs2 fc0 sc0 ls0 ws0">e f f e c t i v e a u t o m a t i c a u t h e n t i c a t i o n . B e c a u s e t h e b i o l o g i c a l c h a r a c t e r i s t i c s a r e i n t r i n s i c t o</div><div class="t m0 x4 h7 y16 ff2 fs2 fc0 sc0 ls0 ws0">human beings, they have strong self-stability and individual differences, so they are bodies</div><div class="t m0 x4 h7 y17 ff2 fs2 fc0 sc0 ls0 ws0">the ideal basis for the verification. In this case, the use of facial features is the most natural</div><div class="t m0 x4 h7 y18 ff2 fs2 fc0 sc0 ls0 ws0">a n d d i r e c t w a y , c o m p a r e d t o o t h e r s t u d e n t s .I t i s c h a r a c t e r i z e d b y d i r e c t , f r i e n d l y a n d</div><div class="t m0 x4 h7 y19 ff2 fs2 fc0 sc0 ls0 ws0">c o n v e n i e n t , w h i c h i s e a s y f o r u s e r s t o a c c e p t . F a c e r e c o g n i t i o n c o n c e p t i s s i m p l e</div><div class="t m0 x7 h8 y1a ff2 fs3 fc0 sc0 ls0 ws0">I</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62684ab84c65f41259823b9a/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">沈阳理工大学学士学位论文</div><div class="t m0 x4 h7 y1b ff2 fs2 fc0 sc0 ls0 ws0">a single description: a static image for a particular scene or a dynamic video image, based on</div><div class="t m0 x4 h7 y1c ff2 fs2 fc0 sc0 ls0 ws0">t h e f ac e d at a s t o re d the l i br a r y i d en t i f ie s o r id e n t if i e s o ne o r m o r e p e o pl e . I n t h e fi e l d o f</div><div class="t m0 x4 h7 y1d ff2 fs2 fc0 sc0 ls0 ws0">c o m p u t e r v i s i o n , f a c i a l r e c o g n i t i o n i s d i v i d e d i n t o f a c e d e t e c t i o n</div><div class="t m0 x4 h7 y1e ff2 fs2 fc0 sc0 ls0 ws0">test, feature extraction, identification or confirmation of three parts.</div><div class="t m0 x6 h7 y1f ff2 fs2 fc0 sc0 ls0 ws0">This paper mainly studies face re cognit ion based on princ ipal component analysis and</div><div class="t m0 x4 h7 y20 ff2 fs2 fc0 sc0 ls0 ws0">h a s e s t a b l i s h e d a f a c i a l r e c o g n i t i o n s y s t e m . T h e m a i n th e c o n t e n t i n c l u d e s f a c e</div><div class="t m0 x4 h7 y21 ff2 fs2 fc0 sc0 ls0 ws0">segmentation, the establishment of face bank, pretreatment, the feature extraction based on</div><div class="t m0 x4 h7 y22 ff2 fs2 fc0 sc0 ls0 ws0">PCA and the algorithm investigate. The paper focuses on the establishment of face library,</div><div class="t m0 x4 h7 y23 ff2 fs2 fc0 sc0 ls0 ws0">t h e p r e t r e a t m e n t o f f a c e i m a g e a n d t h e a l g o r i t h m o f P C A . P C A i s a k i n d o f</div><div class="t m0 x4 h7 y24 ff2 fs2 fc0 sc0 ls0 ws0">popular and practical data analysis techniques, the most important application is to simplify</div><div class="t m0 x4 h7 y25 ff2 fs2 fc0 sc0 ls0 ws0">the original data and be called the should one of the most valuable results of linear algebra. In</div><div class="t m0 x4 h7 y26 ff2 fs2 fc0 sc0 ls0 ws0">the experiment we found a PCA based face recognition system the recognition rate is high,</div><div class="t m0 x4 h7 y27 ff2 fs2 fc0 sc0 ls0 ws0">an d it ca n be u p t o 90 pe rc en t, so P CA ' s im pl em en tat i o n of f ace r ec og nit io n al go rit hm i s</div><div class="t m0 x4 h7 y28 ff2 fs2 fc0 sc0 ls0 ws0">studied it makes sense. </div><div class="t m0 x4 h9 y29 ff4 fs2 fc0 sc0 ls0 ws0">Keywords: Online Face Recognition; PCA;image preprocessing</div><div class="t m0 x8 h4 y2a ff1 fs1 fc0 sc0 ls0 ws0">目 录</div><div class="t m0 x4 h5 y2b ff2 fs2 fc0 sc0 ls0 ws0">1 绪论.......................................................................................................................................1</div><div class="t m0 x3 h5 y2c ff2 fs2 fc0 sc0 ls0 ws0">1.1 课题的来源及研究意义.............................................................................................1</div><div class="t m0 x9 h5 y2d ff2 fs2 fc0 sc0 ls0 ws0">1.1.1 课题的来源.......................................................................................................1</div><div class="t m0 x9 h5 y2e ff2 fs2 fc0 sc0 ls0 ws0">1.1.2 课题的目的及意义...........................................................................................1</div><div class="t m0 x3 h5 y2f ff2 fs2 fc0 sc0 ls0 ws0">1.2 人脸识别的国内外发展概况.....................................................................................1</div><div class="t m0 x3 h5 y30 ff2 fs2 fc0 sc0 ls0 ws0">1.3 课题主要设计内容.....................................................................................................2</div><div class="t m0 x4 h5 y31 ff2 fs2 fc0 sc0 ls0 ws0">2 人脸图像的获取...................................................................................................................2</div><div class="t m0 x3 h5 y32 ff2 fs2 fc0 sc0 ls0 ws0">2.1人脸图像的获取..........................................................................................................2</div><div class="t m0 x3 h5 y33 ff2 fs2 fc0 sc0 ls0 ws0">2.2 人脸分割.....................................................................................................................3</div><div class="t m0 x3 h5 y34 ff2 fs2 fc0 sc0 ls0 ws0">2.3人脸数据库..................................................................................................................3</div><div class="t m0 x4 h5 y35 ff2 fs2 fc0 sc0 ls0 ws0">3 人脸图像的预处理...............................................................................................................4</div><div class="t m0 xa h8 y1a ff2 fs3 fc0 sc0 ls0 ws0">II</div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62684ab84c65f41259823b9a/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">沈阳理工大学学士学位论文</div><div class="t m0 x3 h5 y36 ff2 fs2 fc0 sc0 ls0 ws0">3.1 图像二值化.................................................................................................................4</div><div class="t m0 x3 h5 y37 ff2 fs2 fc0 sc0 ls0 ws0">3.2 图像平滑.....................................................................................................................5</div><div class="t m0 x3 h5 y38 ff2 fs2 fc0 sc0 ls0 ws0">3.3 图像锐化.....................................................................................................................6</div><div class="t m0 x3 h5 y4 ff2 fs2 fc0 sc0 ls0 ws0">3.4 直方图均衡化.............................................................................................................7</div><div class="t m0 x3 h5 y5 ff2 fs2 fc0 sc0 ls0 ws0">3.5 灰度拉伸.....................................................................................................................7</div><div class="t m0 x4 h5 y6 ff2 fs2 fc0 sc0 ls0 ws0"> 4 基于PCA的人脸识别系统..................................................................................................8</div><div class="t m0 x3 h5 y7 ff2 fs2 fc0 sc0 ls0 ws0">4.1 人脸识别的基本步骤.................................................................................................8</div><div class="t m0 x3 h5 y8 ff2 fs2 fc0 sc0 ls0 ws0">4.2 PCA算法介绍.............................................................................................................9</div><div class="t m0 x9 h5 y9 ff2 fs2 fc0 sc0 ls0 ws0">4.2.2 基变换.............................................................................................................11</div><div class="t m0 x9 h5 ya ff1 fs2 fc0 sc0 ls0 ws0">下面是对最后一个含义的说明：..........................................................................12</div><div class="t m0 x9 h5 yb ff2 fs2 fc0 sc0 ls0 ws0">4.2.3 方差.................................................................................................................13</div><div class="t m0 x9 h5 yc ff2 fs2 fc0 sc0 ls0 ws0">4.2.4 特征根分解.....................................................................................................16</div><div class="t m0 x3 h5 yd ff2 fs2 fc0 sc0 ls0 ws0">4.3 基于PCA的人脸识别...............................................................................................18</div><div class="t m0 x9 h5 ye ff2 fs2 fc0 sc0 ls0 ws0">4.3.1 数学模型.........................................................................................................18</div><div class="t m0 x9 h5 yf ff2 fs2 fc0 sc0 ls0 ws0">4.3.2 计算特征脸.....................................................................................................19</div><div class="t m0 x9 h5 y10 ff2 fs2 fc0 sc0 ls0 ws0">4.3.3 算法实现.........................................................................................................20</div><div class="t m0 x4 h5 y11 ff2 fs2 fc0 sc0 ls0 ws0"> 5 GUI界面设计....................................................................................................................23</div><div class="t m0 x3 h5 y39 ff2 fs2 fc0 sc0 ls0 ws0">5.1 图形用户界面概述...................................................................................................23</div><div class="t m0 x3 h5 y12 ff2 fs2 fc0 sc0 ls0 ws0">5.2 界面设计工具集.......................................................................................................24</div><div class="t m0 x9 h5 y2b ff2 fs2 fc0 sc0 ls0 ws0">5.2.1 界面设计编辑器.............................................................................................24</div><div class="t m0 x9 h5 y2c ff2 fs2 fc0 sc0 ls0 ws0">5.2.2 属性检查器.....................................................................................................25</div><div class="t m0 x9 h5 y2d ff2 fs2 fc0 sc0 ls0 ws0">5.2.3 对象浏览器.....................................................................................................25</div><div class="t m0 x9 h5 y2e ff2 fs2 fc0 sc0 ls0 ws0">5.2.4 菜单编辑器.....................................................................................................25</div><div class="t m0 x3 h5 y2f ff2 fs2 fc0 sc0 ls0 ws0">5.3 GUI界面设计...........................................................................................................26</div><div class="t m0 x3 h5 y30 ff2 fs2 fc0 sc0 ls0 ws0">5.4 人脸识别的演示程序...............................................................................................27</div><div class="t m0 x9 h5 y31 ff2 fs2 fc0 sc0 ls0 ws0">5.4.1 程序功能描述.................................................................................................27</div><div class="t m0 x9 ha y32 ff2 fs2 fc0 sc0 ls0 ws0">5.4.2 程序运行.........................................................................................................27</div><div class="t m0 x4 ha y33 ff1 fs2 fc0 sc0 ls0 ws0">点击开始识别后，稍等片刻，如果人脸识别系统识别成功，会将人脸库中的人脸和编号</div><div class="t m0 x4 ha y34 ff5 fs2 fc0 sc0 ls0 ws0">显示在界面。如果识别失败，将会弹出警告“Warning!!!当前用户不在数据库，显示最相</div><div class="t m0 x4 ha y35 ff5 fs2 fc0 sc0 ls0 ws0">似目标”。并且在窗口显示最相似人脸。..........................................................................30</div><div class="t m0 xb h8 y1a ff2 fs3 fc0 sc0 ls0 ws0">III</div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62684ab84c65f41259823b9a/bg4.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">沈阳理工大学学士学位论文</div><div class="t m0 x4 h5 y36 ff2 fs2 fc0 sc0 ls0 ws0"> 结论.......................................................................................................................................30</div><div class="t m0 x4 ha y37 ff5 fs2 fc0 sc0 ls0 ws0">致谢........................................................................................................................................31</div><div class="t m0 x4 ha y38 ff5 fs2 fc0 sc0 ls0 ws0">参考文献................................................................................................................................32</div><div class="t m0 x4 ha y4 ff5 fs2 fc0 sc0 ls0 ws0">附录........................................................................................................................................33</div><div class="t m0 x3 ha y5 ff5 fs2 fc0 sc0 ls0 ws0">附录A 英文原文.............................................................................................................33</div><div class="t m0 x4 h7 y20 ff2 fs2 fc0 sc0 ls0 ws0">REFERENCES......................................................................................................................40</div><div class="t m0 x3 ha y7 ff5 fs2 fc0 sc0 ls0 ws0">附录B 中文翻译.............................................................................................................41</div><div class="t m0 x4 ha y8 ff2 fs2 fc0 sc0 ls0 ws0">1.引言.....................................................................................................................................42</div><div class="t m0 x4 h5 y9 ff2 fs2 fc0 sc0 ls0 ws0">2.人脸检测.............................................................................................................................42</div><div class="t m0 x3 ha ya ff2 fs2 fc0 sc0 ls0 ws0">2.1肤色分类....................................................................................................................43</div><div class="t m0 x3 ha yb ff2 fs2 fc0 sc0 ls0 ws0">2.2动作检测....................................................................................................................43</div><div class="t m0 x4 ha yc ff2 fs2 fc0 sc0 ls0 ws0">3.人脸跟踪.............................................................................................................................44</div><div class="t m0 x4 h5 yd ff2 fs2 fc0 sc0 ls0 ws0">4.结论.....................................................................................................................................46</div><div class="t m0 x3 ha ye ff5 fs2 fc0 sc0 ls0 ws0">附录C 程序清单.............................................................................................................46</div><div class="t m0 xb h8 y1a ff2 fs3 fc0 sc0 ls0 ws0">IV</div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>

<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/62684ab84c65f41259823b9a/bg5.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">沈阳理工大学学士学位论文</div><div class="t m0 xc h4 y3a ff2 fs1 fc0 sc0 ls0 ws0">1 绪论</div><div class="t m0 x4 hb y3b ff3 fs4 fc0 sc0 ls0 ws0">1.1 课题的来源及研究意义</div><div class="t m0 x4 h5 y3c ff2 fs2 fc0 sc0 ls0 ws0">1.1.1 课题的来源</div><div class="t m0 xd ha y3d ff1 fs2 fc0 sc0 ls0 ws0">随着安全入口控制和金融贸易方面应用需要的快速增长，生物统计识别技术得到了</div><div class="t m0 x4 ha y3e ff5 fs2 fc0 sc0 ls0 ws0">新的重视。目前，微电子和视觉系统方面取得的新进展，使该领域中高性能自动识别技</div><div class="t m0 x4 ha y3f ff1 fs2 fc0 sc0 ls0 ws0">术的实现代价降低到了可以接受的程度。而人脸识别是所有的生物识别方法中应用最广</div><div class="t m0 x4 ha y40 ff5 fs2 fc0 sc0 ls0 ws0">泛的技术之一，人脸识别技术是一项近年来兴起的，但不大为人所知的新技术。人们更</div><div class="t m0 x4 ha y41 ff1 fs2 fc0 sc0 ls0 ws0">多的是在电影中看到这种技术的神奇应用：警察将偷拍到的嫌疑犯的脸部照片，输入到</div><div class="t m0 x4 ha y42 ff5 fs2 fc0 sc0 ls0 ws0">电脑中，与警方数据库中的资料进行比对，并找出该嫌犯的详细资料和犯罪记录。这并</div><div class="t m0 x4 ha y43 ff1 fs2 fc0 sc0 ls0 ws0">非虚构的情节。在国外，人脸识别技术早已被大量使用在国家重要部门以及军警等安防</div><div class="t m0 x4 ha y44 ff1 fs2 fc0 sc0 ls0 ws0">部门。在国内，目前主要应用在公安、金融、网络安全、物业管理以及考勤等领域</div><div class="t m0 x4 hc y45 ff2 fs5 fc0 sc0 ls0 ws0">[1]</div><div class="t m0 xe h5 y46 ff1 fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x4 h5 y47 ff2 fs2 fc0 sc0 ls0 ws0">1.1.2 课题的目的及意义</div><div class="t m0 xd ha y48 ff1 fs2 fc0 sc0 ls0 ws0">人脸识别是机器视觉和模式识别领域最富有挑战性的课题之一，同时也具有较为广</div><div class="t m0 x4 ha y49 ff5 fs2 fc0 sc0 ls0 ws0">泛的应用意义。人脸识别技术是一个非常活跃的研究领域，它覆盖了数字图像处理、模</div><div class="t m0 x4 ha y4a ff5 fs2 fc0 sc0 ls0 ws0">式识别、计算机视觉、神经网络、心理学、生理学、数学等诸多学科的内容。如今，虽</div><div class="t m0 x4 ha y4b ff1 fs2 fc0 sc0 ls0 ws0">然在这方面的研究已取得了一些可喜的成果，但是在实用应用中仍面临着很严峻的问题</div><div class="t m0 x4 ha y4c ff5 fs2 fc0 sc0 ls0 ws0">如何能正确识别大量的人并满足实时性要求是迫切需要解决的问题。</div><div class="t m0 x4 hb y4d ff2 fs4 fc0 sc0 ls0 ws0">1.2 人脸识别的国内外发展概况</div><div class="t m0 xd ha y4e ff1 fs2 fc0 sc0 ls0 ws0">人脸识别系统现在在大多数领域中起到举足轻重的作用，尤其是用在机关单位的安</div><div class="t m0 x4 ha y4f ff5 fs2 fc0 sc0 ls0 ws0">全和考勤、网络安全、银行、海关边检、物业管理、军队安全、智能身份证、智能门禁</div><div class="t m0 x4 ha y50 ff5 fs2 fc0 sc0 ls0 ws0">司机驾照验证、计算机登录系统。我国在这方面也取得了较好的成就，国家863项目</div><div class="t m0 x4 ha y51 ff5 fs2 fc0 sc0 ls0 ws0">“面像检测与识别核心技术”通过成果鉴定并初步应用，就标志着我国在人脸识别这一当</div><div class="t m0 xf h8 y1a ff2 fs3 fc0 sc0 ls0 ws0">1</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div>