(英)基于形态学的分水岭算法牙科x射线图像分割

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1、英文原文WatershedAlgorithmBasedonMorphologyforDentalX-RayImagesSegmentationAbstract—Anewwatershedalgorithmbasedonmathematicalmorphology,whichcanbeappliedtodentalX-rayimagessegmentation,isproposedinthepaper.Inordertoseparateeachtoothandimprovetheseriousproblemofover-segmenta

2、tionoftraditionalwatershedalgorithm,weapplytheprocessingbasedonmorphologytogettheimagesenhancedbeforewatershedalgorithm.First,usingthetop-hat-bottom-hattransformationtoamplifythecontrastofforegroundandbackgroundandremovenoises.Andthenerosionprocedureisusedtoweakenthedeg

3、reeofadhesionbetweenteeth.Hole-fillingcanhelptoeliminatesomeunnecessarysplit-linewhichcancausethephenomenonofwrongsegmentation.Finallyweapplythewatershedalgorithmusingdistancetransformationofthebinaryimagetogetthesegmentationresult.Fromtheexperimentresults,wecanseethatt

4、hisalgorithmcanseparateteethaccuratelyandovercometheover-segmentationefficientlycomparedwithtraditionalmethod.Keywords-watershedalgorithm;mathematicalmorphology;dentalX-rayimage;imagesegmentation;distancetransformationI.INTRODUCTIONDentalbiometricsisanappropriatemethodt

5、oidentifydeceasedindividualsofdisasterssuchascriminalcases,blastsandTsunamis,becauseteethwiththeirdentalworksareveryresistanttomodestforceeffectsandhightemperatureandchemicalcorrosionandalsopossessgoodbiometricproperties.Anditalsoprovidesimportantinformationindentalmedi

6、caltreatmentforfurtheranalysistogetthediagnostic.Imagesegmentationasaprecursorhasbeenseenasoneofthemostimportantaspectoftheentireprocesslikepatternrecognition.Itgivesclarityinformationandthelevelstosubdivisiondependontheproblembeingsolved.Imagesegmentationasanindispensa

7、blemethodisappliedtoextractquantitativeinformationofspecifictissues,alsoasthepremiseandasteptorealizetheprocessingofvisualization.Anditisstillachallengingproblemincomputervisionandimageprocessing.Areasobtainedbysegmentationarebothindependentfromeachother.Andalltheareasb

8、elongtooneregionwillsharethespecialconsistency.Theobjectiveofsegmentationistolocalizetheregionofeachtoothinden