巖石裂隙圖像分割及裂隙間距測(cè)量方法研究.pdf

1、重慶郵電大學(xué)碩士學(xué)位論文巖石裂隙圖像分割及裂隙間距測(cè)量方法研究姓名：楊民申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：計(jì)算機(jī)應(yīng)用技術(shù)指導(dǎo)教師：王衛(wèi)星20100529AbstractRocksinthenaturehavefracturesusuallySo，researchofrockfractureplaysanimportantroleinthefieldsofgeologyphysicalgeographymining，oilengineering，h

2、ydrologyandnuclearwasteinsulationObtainmentofsurfacemorphologyattributedataisveryimportantintheresearchofrockfracturesManualworkisthetraditionaldataobtainingmethodComparedwithmanualwork，automaticmeasurementbyimageprocess

3、ingissafe，fastandhighpreciseAndsomeinformation(suchasfracturenetworkfeaturesofeliffrock)thatcan’tbeobtainedbymanualworkcanbeobtainedbythismethodMethodofrockfractureimagesegmentationandrockfracturesspacingmeasurementwasst

4、udiedhereFirstanimprovedsegmentationmethodbasedonMarkovrandomfieldwasappliedtorockfractureimagesImagesegmentationisabasicandimportantstepindigitalimageprocessing。Thesegmentingresultwillaffectthesubsequentanalysisofrockfr

5、acturedirectlySegmentationbasedonMarkovRandomField(MRF)isusedhereSegmentationbasedonMRFisoneoftheregionsegmentations；itconsidersbothspatialrelationshipandcolorspaceoftheimageTheimprovedmethodaddsanotheredgeMRFtotheimageA

6、lltheconfigurationsofthelabelMRFandedgeMRFwaslisted，andwemaketheenergyofpreferredcaseslowandpenalizetheotherwhichcanimprovethesegmentationaccuraeyAnotherimprovementisintheparameterestimationprocedureOstuisusedtosegmentth

7、eimagefirstandsimulatedannealingalgorithmisimprovedbasedonthegrayleveloftheimageThesetwostepsmaketheMaximum—expectationalgorithmconvergequicklyTraditionalmethodofmeasuringrockfracturespacingismanualwhichhasmoreworkandnar

8、rowerapplicationAnimprovedmethodbasedonimagetechniqueisproposedhereTheimprovedmethodhasfourmainsteps：segmentation，skeletonextraction，settingmeasurepointsandcalculatingrockfracturesspacingFinallydistributionoftherockfract