基于機器視覺的紡織品外觀疵點檢測與質量評價的研究.pdf

1、湖北工業(yè)大學碩士學位論文基于機器視覺的紡織品外觀疵點檢測與質量評價的研究姓名：王璜申請學位級別：碩士專業(yè)：機械設計及理論指導教師：趙大興20090501湖北工業(yè)大學碩士學位論文●———●I!——————I■—●———————●■————■■■■●————■—●———AbstractAsproductsquailtyautomaticinspectiontechniquebasedonmachinevisionisbecomingmore

2、valuableitprovidesanimportantmethodfortherealizationofhi曲一speed，highprecisionautomaticdetectionproductsqualityFocusingontextiledefectautomaticdetectiontechniquesbasedonmachinevisionthethesisstudiesthehardwaresystemarchit

3、ectureandmajorimpactonthesystemimplementationdesignstextileimageprocessingalgorithmsanddevelopsatextiledefectdetectiondevicebasedonthesestudiesFirstofa11fordifferentdetectionrequirementsoftextileswidthandhighspeedhigh—pr

4、ecision，thecharacteristicsoftextilesintheimageacquisition，processinganddefectclassificationareconsideredcomprehensivelyEspeciallythedistributedsystemiSconducivetotheachievementofthecompletedetectionofwidetextilesurfacean

5、dCaneffectivelyreducesystemloadcalculationsAnadaptivefilterbasedonGaussiankemeliSdesignedanddevelopedafteranalyzingthetextileimagewithnoiseandtextureandthelinearfilteringmethodofdigitalimageprocessingComparingwithtraditi

6、onallinearsmoothingfilterthisfilterCaneffectivelyreducethenoiseofthetextileimageandthetargetareaoftheimagefuzzywhichiSbeneficialforthefollowingprocessingGettingdefectsregionintextileimagewithcyclicaltexture，thethesisdesi

7、gnsanimageedgeenhancementmethodbasedonadaptivefirstderivativesoperatorandmorphologicalgradient，andathresholdsegmentationoperatorwithhighprecisionselfadaptivecapacitybasedonimagestatisticsvaluesTheninorderteducethelOSSoft

8、hedetectpixelvalueafterimagepre—processing，thethesisdesignsafastdefectclusteralgorithmusingmultiscalescanningByanglicizingtextileimagesanddefectsfeatures，thethesisdesignsamethodoftextiledefectscharactersinspatialdomainan

9、dfrequencydomainextractionandsetsalibraryincludingthecharactersaStheclassificationstandard，theninputstheclassificationvaluesintotextiledefectsclassifierbasedonmendedBPneuralnetworkandgetsthedefecttypesTextilesurfacequali

10、tyevaluationsystemisdesignedbasedonChinatextileindustrystandardFZO10l8一l992andinternationalstandardISO／DIS84981990tOevaluatetextilequalityFinallyonthebasisofalgorithmsandmethodsabove—mentioned，thetextiledefectsdetectiond

11、eviceisdesignedanddevelopedTheexperimentshowsthatthedetectspeedofthedeviceiS270m／min(realtimedetection)to80~200m／rain(offlinedetection)Thehi曲estdetectionprecisioniS05mmThedeviceCandetectthedifferenttextilewidthofwhichiSf