基于ICT图像的轮廓特征重构研究与应用

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1、西南交通大学硕士学位论文基于ICT图像的轮廓特征重构研究与应用姓名：董方申请学位级别：硕士专业：机械设计及理论指导教师：李柏林20090301西南交通大学硕士研究生学位论文第Ⅱ页ABSTRACTAlongwiththedevelopmentofICTtechnologyandintroductionoffeaturetechnologyintoreverseengineering，thefeature—basedreverseengineeringofICTslicingimageisproposedandhasbeenbecomingahottopic

2、ofcurrentresearchinthisarea．Inthisdissertation,somekeytechnologiesrelatedtothegeometricfeaturemodelreconstructionbasedonIndustrialCTslicingdatesarestudied．Itmainlyincludes：ImageprocessingofICTgrayimagesisfirstlyaccomplished．OnthebasisofanalyzingthefeaturesofindustrialCTimagesandt

3、hemethodsofexistentimagesegmentation，theexistingOtsumethodisresearched．TheimageissegmentedthroughimprovedmethodofchaoticPSOandtwo—dimensionalOtsu．Themethodhasstronganti-noiseabilityandgoodsegmentationresults．Atthesametime，chaoticparticleoptimizationisintroducedandprovidesanewwayf

4、ortwo—dimensionalOtsumethodofreal-timeapplications．ClassificationandPresentationoffeaturesisanalyzedandsummarizedthoroughlyinvariationdesignbasedCADmodelingmethodologyinreverseengineering．Curvaturebasedfeatureidentificationmethodaresynthesized．Theoryofmultiscaleisintroducedintose

5、ctionfeaturecurvesegmentation．Atechnicalideaofautomaticfeaturesegmentationisproposedbasedoncurvaturemulti-scaleanalysis．Basedoncurvaturescalespace，theoverallcontourgeometricfeatureandthedetailsfeatureareretained．Anewtechnicalapproachisprovidedforcapturinghighlevelproductstructure

6、．Basedontheforegoingresearch,thispaperstudiedthecontoursegmentationbasedonfeaturepoints，thesefeaturepointsareregardedasthegisttOrecognizesectionfeature．Whenthesectionfeatureisrecognized,theyshouldbefittedwithLSM．Whenthesectioncurvefeatureisfitted,theconstrainedoptimizationtechniq

7、uebetweenthecontourcurvesisstudied．TheresearchresultsofthispaperCanbeanimportantreferenceforthe西南交通大学硕士研究生学位论文第1ll页futureresearch．Keywords：IndustrialCT；Imageprocessing；Scale-space；Curvature；Featurepointdetection西南交通大学．曲南父逋大罕。学位论文版权使用授权书本学位论文作者完全了解学校有关保留、使用学位论文的规定，同意学校保留并向国家有关部门或机

8、构送交论文的复印件和电子版，允许论文被查阅和借阅。本人授权西南交通大学可以将本学