目录摘要......................................................1Abstract..................................................2第一章绪论...............................................31.1课题背景及意义........................................31.2OCT技术简介及应用现状................................41.2.1OCT技术发展简介....................................41.2.2OCT技术应用现状....................................41.3本文研究目的和主要研究内容............................6第二章扫频OCT系统及算法设计.............................72.1频域OCT系统介绍......................................72.2扫频OCT系统搭建......................................72.3图像处理与厚度算法设计................................92.3.1图像去噪...........................................102.2.2图像二值化.........................................112.2.3闭运算.............................................112.2.4边缘检测...........................................112.2.5厚度计算...........................................12第三章实验及结果分析....................................133.1单层薄膜实验及结果...................................133.2多层薄膜实验及结果...................................15第四章总结与展望........................................20参考文献.................................................21致谢.....................................................22摘要非破坏性测试和评估（NDTE）以其独特的非侵入性的特点已经在工业生产上取得了广泛的应用。但是在微米级物品内部快速、非接触、非侵入性和高分辨率成像技术仍然稀缺。光学相干层析成像技术（OCT）作为一种新颖的NDTE工具受到了越来越多的关注。论文主要介绍了OCT技术，并根据实验要求在实验室完成扫频OCT系统搭建。使用扫频OCT系统分别对单层塑料薄膜、两层塑料薄膜以及三层塑料薄膜进行扫描成像。通过对三幅图像进行图像处理，完成各层薄膜的边界提取，并根据像素与实际厚度的对应关系，完成塑料薄膜厚度的计算。并依据边界提取结果，对塑料薄膜的平整性进行定量可视化分析，突出了光学相干层析技术其无损性和高精度的特点，展现了光学相干层析成像技术对多层塑料薄膜各层厚度精确检测以及平整性检测方面有着广泛的应用前景。关键词：非破坏性测试和评估、光学相干断层扫描技术、薄膜厚度AbstractNon-destructivetestingandevaluation(NDTE)hasbeenwidelyusedinindustrialproductionwithitsuniquenon-invasivecharacteristics.Butrapid,non-contact,non-invasive,andhigh-resolutionimagingarestillscarceinmicron-sizedobjects.Opticalcoherencetomography(OCT)hasattractedmoreandmoreattentionasanovelNDTEtool.[1]thepapermainlyintroducestheOCTtechnology,andthencompletesthescanningoftheOCTsysteminthelaboratoryaccordingtotheexperimentrequirements.Thescanningimageofsingle-layerplasticfilm,two-layerplasticfilmandthree-layerplasticfilmwereused.Throughimageprocessingofthreeimages,theboundaryextractionofeachlayeroffilmiscompleted,andthethicknessofplasticfilmiscalculatedaccordingtothecorrespondingrelationshipbetweenthepixelandtheactualthickness.Andaccordingtotheresultsofboundaryextraction,quantitativevisualizationanalysiswascarriedoutonthesmoothnessofplasticfilm,highlightitsconditionoftheopticalcoherencetomographytechniqueandthecharacteristicsofhighprecision,showingtheopticalcoherencetomographytechnologyofmultilayerplasticfilmthicknessofeachlayeraccuratedetectionandsmoothnessdetectionhasawideapplicationprospect.Keywords:Opticalcoherencetomography,thicknessoftheplasticfilm，non-destructivetestingandevaluation第一章绪论1.1课题背景及意义无损检测因为其独特性...
