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1.
1Currentchangedetectiontech niquesAutomaticchangedetectioninimagesofagivensceneacquiredatdifferenttimesisoneofthemostinterestingtopicsofimageprocessing .Itfindsim portantapplicationswithindifferentcontexts,rang ingfromvisualsurveillanceandvideocodingtot…  相似文献   

2.
1 IntroductionThecornercubeprismorretroreflectorisexten sivelyusedinplaceofthemovablemirrorinanin terferometer,orasacooperativetargetinrangefinder.Ithasthreesurfaces,whichareperpendic ulartoeachotherandcalledtherightangularsur faces.Aninclinedisoscelestr…  相似文献   

3.
1 IntroductionInthetraditionalmapandGIS ,accordingtothedifferentgeometricandelementalattributecharac teristicsofspatialobjects,theycanbedescribedaspointsymbol,linearsymbolandsurfacesymbol.Afeatureclassisgivenwithaspecificsymbol.Be causethosesymbolsdonote…  相似文献   

4.
Inordertoelectronizetheprocessofediting ,publishingandissuingscientificandtechnologicalperiodi calsaswellastoadvancethenetworkingprocessofscientificandtechnologicalinformationinterchange,wehavenowjoined“WanfangData———DigitizedPeriodicalGroup” .Therefore…  相似文献   

5.
Automaticmapnameplacementisanimportanttaskamongautomationofcartography,anditisal soachallengeincartographyandGISfield .Mapisadescriptivetoolthatusesasmallspacetorep resentalargespacesocontentsofmapoftencompeteforthemapspace .Ondensemap ,fea turesareclosel…  相似文献   

6.
1 IntroductionAncientbuildings ,astheessenceofancientChi neseculture ,characterizedbyitscomplexandan tiqueshape ,delicatestructure ,compactcombinationand gracefulsculpture ,areappreciated globally .Someancientbuildingsmadeofwoodendurelongbecauseofitssolidstr…  相似文献   

7.
1 IntroductionByvirtueofthecontrolpointsand/orrelativecontrolwork ,themainobjectiveofcontrolsurvey ingincloserangephotogrammetryistobringthecloserangephotogrammetricnetunderthespeci fiedobjectspacecoordinatesystem .Besidesthese lectionofobjectspacecoordi…  相似文献   

8.
1 IntroductionThethinningofbinaryimagesisanimportanttechnologyinimagesprocessing .Itisoftenusedtoextracttheskeletonsofbinaryimagesforrecogniz ingbinaryobjects .Ithasbeenwidelyappliedinmapdigitizing ,charactersrecognition ,advancedanalysisofimagesandsoon .T…  相似文献   

9.
Withtherapiddevelopmentofglobalinformationhighway,multimediacommunicationtechnologyplaysamoreandmoreimportantroleinnationaleconomicandsocialdevelopment.However,themultimediacommunicationsystemisacomplicatedrealtimedistributedsystemanditssoftwareisdiff…  相似文献   

10.
1 IntroductionTheincreaseinresearchintheChileanAntarcticTerritoryhasbecomemanifestoverthelasttenyearsinthesubstantialincreaseinthenumberofscientificstationsestablishedandmaintainedonReyJorgeIsland ,makingitneccesarytoregulatetheuseofthoseareasofintere…  相似文献   

11.
Determination of Geopotential of Local Vertical Datum Surface   总被引:1,自引:0,他引:1  
1 IntroductionEachcountryoreachgroupofcountriesselectsmeansealev elatadefinedtidegaugeoratagroupofgaugesforitsverti caldatumsurface .Itisrealized ,however,thatthelocalmeansealevelisusuallydepartedfromthegeoid ,whichshouldbetheidealdatumsurfaceforheight,ow…  相似文献   

12.
1 IntroductionTheartofancientChinesearchitectureistheessenceoftheChineseculturalheritages .Ithasim portantsignificanceforstudyingandlearningChi nesecultureandcivilization .Itisofgreatdifficul ty ,however,tolearnthecomplicatedstructureofancientChinesearchi…  相似文献   

13.
1 IntroductionTherepresentationofspatialobjectsisoneofthekeyissuesincurrentresearchonthespatialdatabasetheoryofGIS (BurroughandMcDonnell,1 998) .Spatialobjectsinnatureareclassifiedastwokinds:objectswithdistinctiveboundariesandob jectswithtransitionalorfuzzy…  相似文献   

14.
Inordertoelectronizetheprocessofediting ,publishingandissuingscientificandtechnologicalperiodi calsaswellastoadvancethenetworkingprocessofscientificandtechnologicalinformationinterchange ,wehavenowjoined“WanfangData———DigitizedPeriodicalGroup” .Therefor…  相似文献   

15.
1 TwokindsofmanagingviewsTherearetwoconspicuousviewsinthetheoryofmodernmanagementscience ,whicharealsoextremelyopposite .Thesetwokindsoftheoriesarethetheoryofobjectivemanagementthatseekstherealizationoftheobjectiveinmanagementandthetheoryofprocessmanag…  相似文献   

16.
1 IntroductionThecombinedGPS/GLONASSoffersmanyad vantagescomparedwithGPS_onlyuseforposition ingapplicationsespeciallyinareaswherethenum berofvisiblesatellitesislimited .TheinclusionoftheGLONASSsignalscanincreasetheaccuracyofpositioningaswellastheavailab…  相似文献   

17.
1 IntroductionRemotesensinghasbeenappliedinmanyfieldsinthepastdecades ,butthemodetoacquireandpro cesstheremotesensingdatadoesnotchangeradi cally .Theremotesensingimagemustbegeo_refer encedthroughongroundcontrolpoints (GCPs) ,andstereomatchingmustbeappliedi…  相似文献   

18.
1 IntroductionTodeveloptheoceanwidelyanddeeply ,weneedabundantoceaninformation .Asanessentialpartofsuchinformation ,seafloortopographyplaysaveryimportantroleinavarietyofmarineactivities .However,thehighcostforoceanbathymetricsurveyinglimitstheapplicationo…  相似文献   

19.
Withthesupportofmultimediatechnology ,elec tronicatlasiscapableofmanaging ,processinganddisplayingvarioustypesofinformationincludingtext,sound ,image,video ,animation ,tableanddigi talmap .Theinclusionofdigitalmapisitsmajorcharacterdistinctfromothermultimedi…  相似文献   

20.
1 GraphtheoryanddefinitionsAgraphGconsistsofpoints (NODES)andlines (EDGES)connectingthesepoints .Thepointsarecallednodesandlinesareedges .Adirectedgraphisagraphinwhichtheedgescon nectingthenodesarespecified .Atreeisaconnectedgraphwithoutanyloop .Aloopisaclos…  相似文献   

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