1、東南大學博士學位論文集成化道路幾何設計CAD系統(tǒng)的研究與開發(fā)姓名：程建川申請學位級別：博士專業(yè)：道路與鐵道工程指導教師：鄧學鈞20010601AbstractWiththerapiddevelopmentofroadandhighwayconstructioninChina，Theintegrationofroadsurveyanddesignfhereinafteras“theintegration”or“theintegrated”

2、)isthecertainresultbywhichthequalityandefficiencyofroadsurveyanddesignareassuredBased0nthelatestachievementonmeshgenerationofcomputerscienceandcombinedwithspatialgeometrycomputergraphicsobject—orientedprogrammingandother

3、advancedCADdevelopmenttools，thispapermadeaprofoundresearchanddevelopmentonthewholeprocessoftheintegratedroadsurveyanddesignandgotsomevaluableconclusionsaswellasapplicablesoftwareThispaperstartedwiththeconclusionthattheco

4、retechniquesupportingtheintegratedisactuallythethree—dimension(3D)orspatialdataprocessingthroughoutthewholeperiodsofroadsurveymaddesignFromtheverybeginningoftheintegrated，severalroadstuaeyingdatacollectionmethodsfromaero

5、photogaphytoall—stationaresupportedEspeciallymassiveworkweremade01“1datacollectionfromexistingdigitalmap，whichleadaverypracticalprocessoftopographicfeaturessuchasridgevalleysteepslopeandassuretheaccuracyoforiginaldataThe

6、mostimportantworkfinishedinthedissertationarethealgorithmresearchandprogrammingofconstrainedDelaunaytriangulation(CDT)whichservesthestripeshapedroaddigitalterrainmodelbetterandiscapableoftreatingmorethanonemillionterrain

7、pointsinonetime，ThealgorithmofCDTcalleddivide—conquerwithedgeflipisthefastestoneamongallthealgorithmsandisrobustforallkindsofdispersedpointsItcouldtreatlessthanonemillionpointswitheasedirectlyunderAutoCADandalternatively

8、thereisastand—alonewindowsprogramusingmapfiletechniqueformorethanonemillionpoints—actuallyunlimitedpointswhichrunfasterthanthatunderAutoCADOnthebasisofCDTthispaperbelievedthattheDTMapplicationistheretriangulationofbetwee