x射线焊缝数字图像的缺陷提取技术分析

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1、中北大学学位论文morphologicalgradientoperatorwasproposed.Byexperiments,itisprovedthatthemethodhasbetternoiseimmunity,andmeanwhileperformswellespeciallyfortheextractionoflinedefects,whichlaidagoodfoundationforthefutureresearchofautomaticrecognitionofwelddefects.Keywords:X-rayradiography,imageprocessing,def

2、ectsextraction,graycurve,multi-scalemorphology.中北大学学位论文目录1.绪论...................................................................................................11.1论文背景...............................................................................................................11.2射线检测技术发展现状.....

3、.................................................................................21.2.1射线数字成像系统发展现状...................................................................21.2.2X射线缺陷自动识别技术发展...............................................................61.3论文目的和意义.......................................

4、..........................................................91.4本文的内容组织安排.......................................................................................102.X射线底片的数字化.......................................................................112.1底片数字化的要求...........................................

5、.................................................112.2胶片数字化系统...............................................................................................122.2.1胶片数字化系统原理及组成.................................................................122.2.2Array2905HD系统介绍....................................

6、...................................142.3影响底片数字化质量的因素..........................................................................162.4底片数字化结果分析.......................................................................................182.5本章小结..............................................................

7、..............................................203.X射线焊缝数字图像的预处理技术研究........................................213.1X射线底片数字化图像的特点.......................................................................213.2焊缝缺陷图像的降噪..