结构光三维视觉测量系统标定方法研究

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1、工学硕士学位论文结构光三维视觉测量系统标定方法研究戴强哈尔滨理工大学哈尔滨理J：大学J‘学硕士学位论文Calibrationmethodstudyofthree—dimensionalStructuredLightVisionMeasurementSystemAbstractThemeasurementofthreedimensional(3-D)object’sSurfaceisimportantinmachinevisionandon-line3Dmeasuringinindustrylocale．Throe-dimensionals

2、tructuredlightvisionmeasurementsystemhastheadvantagesofnon-contact，hi【曲speed，on—lineanddevelopfast．Everykindofmeasurementsystemneedscalibration．Basingonthestudyofintemalandinternationalsystemmeasurementdevelopmentsituationandcalibrationmethods，weputforwardanewcalibrationm

3、ethod．Wemovespecialfilamentinsystemtwo-dimensionalmeasuresectionwithstandardorthogona]gridmode，sothatthewhole1Tleastkresectionisdividedasstandardspacegridinterval．Wehandleeverygridnodewithsub—pixelorientationmethodandfindoutsubsectionlinearityeqttationbetweeneveryspace鲥di

4、ntervalbystandarddifferencecontrastingmethodWecalibratesystemmeasurecoordinatesofeverygridareaaccordingtothelinearityequation．Inthewholesystemmeasurementsection，thesa／negroupgridcancalibrateeverysub—system．Fromtheconversionofcoordinates，thewholesystemiscalibrated．Themaini

5、obsarcasfollows：I，Accordingtothesystemprinciple，weconstructsystemmathematicsmodeI．Atthesametimewedesignthewholesystemparameters．2．Accordingtheneedofsystemcalibration，westudythetechniqueofsub—pixelorientationincludingmethodofcentroidandgreycentroidmoment，andothercorrelatio

6、nmethod3．Weputforwardthecalibrationmethodandlistthedetailedcalibrationprocessanddata，thenacquiresystemmeasurementresults．Thesystemcalibrationresultsshow：thismethodissimpleandreliability,speedishigh，needsnoiterative．Undertheconditionofnoprecisionexperimentdevicethesystemme

7、asurementerrorsarelessthan02mmwithin100mmdepthmeasurement．Theresearchfruitshaveimportantapplicationvaluesandeconomicbenefitinon—linemeasurementofcablecore，opticalfibreproductsandstampingsteelribbon．．1I．哈尔滨理工人学l。学硕十学位论文Keywordscalibration；sub-pixelorientation；structuredlig

8、ht；3-Dmeasurement哈尔滨理工大学丁学硕士学位论文第1章绪论1．1课题研究的背景和意义现代大工业生产中，为获得产品的空间信息而进行的三维自动测量是人们普遍关注的技术。现代化生产需