图像融合算法研究毕业论文

本科学生毕业论文2014年5月10日论文题目：图像融合算法研究学院：电子工程学院年级：2010级专业：电子信息工程姓名：学号：指导教师：杜宝祥I摘要对多元图像信息进行的一系列提取和合成，统称为图像融合。通过对多元图像信息的提取与合成，从而获得对同一目标的更为准确、更为全面、更为可靠的图像描述。研究者可以得到包含多种情况下，不同条件下、不同环境下、不同模式下、不同观察角度下，对同一目标的综合特征描述的图像。图像融合通常可分为像素级融合、特征级融合以及决策级融合三个层次。本文首先介绍了图像融合的大概、国内外研究现状、面临的问题以及本文的主要工作。接着重点论述了图像融合的三个层次以及像素级图像融合的几种常用方法，并通过matlab仿真，比较加权平均法、主成分分析(PCA)法、IHS融合法以及小波变换法的融合效果。关键词图像融合；主成分分析（PCA）；IHS；小波变换IIAbstractToaseriesofmultipleimageinformationextractionandsynthesis,collectivelyknownasimagefusion.Basedonmultipleimageinformationextractionandsynthesis,therebygainingthesametargetismoreaccurate,morecomprehensive,morereliableimagedescription.Theresearcherscangetcontainsavarietyofsituations,differentconditions,differentenvironment,differentmode,differentobservationangles,thecomprehensivedescriptionoftheimageonthesametarget.Imagefusionisusuallydividedintopixellevelfusion,featurelevelfusionanddecisionlevelfusionthreelevels.Thispaperfirstintroducesthepurposeofimagefusion,domesticandforeignresearchpresentsituation,problemsandthemainworkofthisarticle.Thenmainlydiscussesthethreelevelsofimagefusion,andseveralcommonlyusedmethodsofimagefusionatpixellevel,andthroughmatlabsimulation,comparingtheweightedaveragemethod,principalcomponentanalysis(PCA)method,IHSfusionmethodandwavelettransformfusioneffect.KeywordsImagefusion;principlecomponentsanalysis（PCA）;Intensity-Hude-Saturation（IHS）;wavelettransform目录摘要............................................................................................................................................IAbstract...................................................................................................................................II第一章前言.............................................................................................................................11.1概述.............................................................................................................................11.2国际研究现状.............................................................................................................11.3国内研究现状.............................................................................................................11.4图像融合技术发展历程.............................................................................................21.5本文的主要内容.........................................................................................................3第二章图像融合理论.............................................................................................................52.1图像融合的三个层次.................................................................................................52.2图像融合规则.............................................................................................................8第三章像素级图像融合的常用方法...................................................................................103.1加权平均法...............................................................................................................103.2主成分分析法（PCA法）........................................................................................103.3基于IHS变换的图像融合方法...............................................................................123.4基于小波变换的图像融合方法..................................................错误!未定义书签。第四章MATLAB仿真.................................................................................错误!未定义书签。4.1MATLAB仿真结果........................................................................错误!未定义书签。4.2图像融合的客观评价参数.......................................................................................154.2.1信息熵..............................................................................错误!未定义书签。4.2.2均方根误差.......................................................................错误!未定义书签。4.2.3信噪比...............................................................................错误!未定义书签。4.2.4平均梯度...........................................................................错误!未定义书签。4.3四种方法的客观评价...............................................................................................17结论.........................................................................................................................................18参考文献.................................................................................................................................19附录一.....................................................................................................................................21附录二.....................................................................................................................................25附录三.....................................................................................................................................32致谢.........................................................................................................................................36图像融合算法研究1第一章前言1.1概述图像融合是指将多源信道所采集到的关于同一目标的图像数据经过图像处理和计算机技术等，最大限度的提取各自信道中的有利信息，最后综合成高质量的图像，以提高图像信息的利用率、改善计算机解译精度和可靠性、提升原始图像的空间分辨率和光谱分辨率，利于监测[1]。本文重