三维激光扫描技术在土木工程领域的应用
ABSTRACT
ABSTRACT
3D-LaserScanningsystemisoneofthemeasuringinstrumentsintheindustrialmeasuringinstruments.It
spacial
thenCallcapturesthethree-dimensionalgeometricaldataofobjectorterrainusingtheahi曲-speedlasermeasuringinaveryshorttime.andsavethedatainformofpointclouds.
Inordertoapplythisnewtechniqueincivilengineering.thispaperassociates、蕊t11theFARO3D—LaserScanningsysteI玛researchesthebasicprinciplesandthestructurecmposingofthesystem,andthemature
asoftwaresoftheReverseEngineeringarealsostudied,finallypresentintegratemethodofapplication
includingthehardwareandsoftware,someeffectivearithmeticindifferentimportantaspectsbelongtothepreprocessingofpo缸cloudsaredeveloped,suchasNoise
areducing,Multi-viewpo硫cloudsregistration.Inresult,inthetightofthe
deficiencyinsoftware,anewpoimcloudspreprocessingsoftwareisdesignedandprogrammingintheconditionoftheVisualC++.net、Matlab、OpenGL,andthenusingthefactualdataofaarchitecturetoprovethefeasibilityofthenewsoftware.Followingworkshavebeendoneinthispaper:
andthestructure1)Summarizethebasicprinciplescomposingof3D-Laser
Scanningsystem,theachievementsinthefieldsofCivilEngineering,explorethedeficiency.
2)Researchthehardware
processingofofmostkindsof3D-LaserScanningsystem,andthepo硫clouds,compareandanalyzetheerrorsource、factorsofinfluencingtheaccuracyof3D—LaserScanningsystem.
3)Research
methodthepreprocessingofofmagnanimitydifferentpointclouds,andintroducetheofpoilltclouds,presentnoise-reducingforkinds
distance—dividedmethodtoeliminateerror
ofpointsandself-adjustingarithmeticGaussian—Shapedfiltering.Itisprovedthatinpracticethisarithmeticisfar
amorefastthanothers,andbaringbettereffectofnoise-reducing.Ⅱ