平面葉柵紋影圖像處理與測(cè)量系統(tǒng)開(kāi)發(fā).pdf

1、西北工業(yè)大學(xué)碩士學(xué)位論文平面葉柵紋影圖像處理與測(cè)量系統(tǒng)開(kāi)發(fā)姓名：張雷申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：馬存寶20050301Abstract西北工業(yè)大學(xué)G4is畢業(yè)論文AbstractExperimentalresearchoftwodimensional(2D)cascadeflowfieldplaysanimportantroleinaeroenginebladedesign.Thedatareductionproce

2、dureofschlierenimageisoneofthekeytasksofthetesting.Theimagecharacteristicparametersweredistinguishedbyexperiencetraditionally.Toobtaintheaccuratetestingresultsthequantitativeanalysisandmeasurementmethodswerepresenteddepe

3、ndonimageprocessingandtheschlierenimageprocessingsystemwasdesignedanddeveloped.Theprojectofschlierenimageparametersmeasurementandanalysissystemwaspresentedbasedonanintegratedanalysisof(2D)cascadeshockwavephenomenaandthei

4、rdistributionsundervarietyexperimentalconditions.Firsttheappropriatepreprocessingalgorithmswerechosentoimprovetheimagequality.Thelegibleoutlinesoftheshockwavesweregivenbyusingtheedgedetectionalgorithm.Anoptimalalgorithmc

5、ombinedthethresholdwiththemorphologicalgorithmwasproposedtoseparatethefiguresofbladesandshockwavesandthebinaryimagesofthebladesandshockwaveswereobtainedseparately.Therefinedcavitymethodbyimagemomentswaspresentedtoacquire

6、theindividualfigures.Thenthegeometricprojectionmethodwasusedtomeasurethecharacteristicparametersoftheimages.Furthermoreasemiautomaticshockwavequantitativemeasurementmethodfortheanglelengthandpositionparameterswasgiventom