The Systematic Land Verification (SyLVer) Protocol

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GEODETIC ENGINEERS OF THE PHILIPPINES 44TH GEP ANNUAL REGIONAL CONVENTION

(REGIONAL DIVISION III)

LOUIEP.BALICANTAChair,UPDGE

Director,UPTCAGPFelipeF.CruzProfessorialChairinGeodeEcEngineering

Geodesy,Survey,LandAdministra=onandValua=onLaboratoryU.P.DepartmentofGeodeEcEngineering

lpbalicanta@up.edu.ph

Otel Pampanga, Skye Plaza Bldg., Lazatin Boulevard, San Agustin, City of San Fernando, Pampanga

March 16-17, 2018

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• BACKGROUND • CURRENT INITIATIVES • SyLVer Protocol Research • Conclusions and Recommendation

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UPDATING???

DENRRegionalOf/ices•  digitizecadastraldata•  encodingandplottingthe

coordinatesofindividualparcels

•  scanninganddigitizingcadastralmaps

•  producingacomputerizedcadastraldatabase

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•  Numerousinitiativesdonetoimprovelandinformationsystembutminimaleffortwasdonetoanswertheproblemofmaintainingandupdatingacadastraldatabase

•  Developmentofmoderngeographicinformationsystems(GIS)helpsolvetheproblemofincrementalupdatingofcadastraldatabase

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LAMSPhilippinesande-SurveyPlanEngr.WarlitoG.Quirimit

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Land Sector Modernization Project (LandS Mode)

•  Three Components: - Three Dimensional Cadastre (3DCad) - Unified Projection System for Cadastral Data (UPSCad) - Cadastral Survey Records Reconstruction (CadSRR)

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LandS Mode: 3DCad Objectives: •  Formulate an appropriate methodology in the generation of 3D

Cadastre; •  Conduct field experiments in the data acquisition using

appropriate equipment; •  Perform data processing and analysis on the applicability of

3D Cadastre on the study areas Technology to be used: •  GNSS •  UAV •  Terrestrial Laser Scanner •  Computer and Processing Software

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LandS Mode: 3DCad

3 Dimensions (X, Y, Z)

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LandS Mode: 3DCad

3 Dimensions (X, Y, Z)

Figure I‑7. Land parcel boundaries and footprints of the building in the land cadastre (left), the proposed 3D representation of real property (middle), and data recorded in the building cadastre (right)

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LandS Mode: UPSCad Objectives: •  Formulate appropriate methodology in the generation of a

common projection system; •  Conduct field surveys in one (1) municipality with three

(3) adjoining selected survey projects done in three (3) different reference systems mentioned;

•  Perform data processing and analysis on the applicability of using satellite / or drone imageries on the study areas

Technology to be used: •  GNSS •  UAV •  Computer and Processing Software

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LandS Mode: UPSCad

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LandS Mode: UPSCad

ProposedStudyArea:AdjoiningMunicipaliEeswithdifferentCoordinateSystem

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LandS Mode: CadSRR Objectives: •  Review the current practices in survey records reconstruction; •  Formulate appropriate methodology in the survey

reconstruction outside the LAMS-DCDB; •  Perform computer programming to provide additional

commands to an open source and free GIS software which will be used as the platform for the survey records reconstruction and integration of processed data;

•  Test and perform survey reconstruction methodology on the study areas

Technology to be used: •  Computer, GIS Software, Programming Software

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LandS Mode: CadSRR Study Areas: Regions 4A, 4B, Region 3 and NCR

•  Determineandevaluatethefactorsaffectingcadastraldatabase’schanginginformation,provideawaytocreateandupdateacadastraldatabaseandprovideawaytomaintainthehistoricalinformation.

•  ProposeaSystematicLandVeriEication(SyLVer)ProtocolthatmayhelpagenciessuchasDENRtodocomputerizedincremental updating while maintaining the topologicalintegrityofacadastraldatabase.

•  Anotherformof3dimensionalcadastre(X,Y,T)

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CADASTRAL DATABASE

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AttributesoftheCadastralDatabase

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CADASTRAL DATABASE

25AttributesoftheCadastralDatabase

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CADASTRAL DATABASE

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Typicalsurveysymbolsbasedonthetypeofsurveyconducted

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CADASTRAL DATABASE INCREMENTAL UPDATING I.Spatialcharacteristic-affectsthegeometryoftheparcel

1.SubdivisionSurvey (segmentation/split)2.ConsolidationSurvey (mergence/union)3.Consolidation-SubdivisionSurvey (complexchange)4.VeriEicationSurvey (boundaryadjustment)

II.Attributecharacteristic-geometricpositiondoesnotchange -changeinownership,landclassiEicationetc.

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CADASTRAL DATABASE INCREMENTAL UPDATING

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ChangeinthecharacteristicofalotcanbeidentiEiedby•  topologicalrelationshipbetweentheparcelsbeforeandafterthe

change•  topologicalintegrityconstraintsandattributeproperty(Chen,ZhouandLi2007).

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ARCGIS PARCEL EDITOR

•  ParcelFabric•  Base-mapCreation•  UpdateLayer•  HistoryLayer

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PROPOSEDSYSTEMATICLANDVERIFICATION(SyLVer)PROTOCOL

BaseMapCreaEonFlowchart

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PROPOSEDSYSTEMATICLANDVERIFICATION(SyLVer)PROTOCOL

ProcedureforUpdaEngCadastralDatabaseMap44thANNUALREGIONALCONVENTION

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PROPOSEDSYSTEMATICLANDVERIFICATION(SyLVer)PROTOCOL

SubdivisionSurveyProtocol

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PROPOSEDSYSTEMATICLANDVERIFICATION(SyLVer)PROTOCOL

ConsolidaEon-SubdivisionSurveyProtocol

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ConsolidaEonSurveyProtocol

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PROPOSEDSYSTEMATICLANDVERIFICATION(SyLVer)PROTOCOL

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VerificaEonSurveyProtocol

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PROPOSEDSYSTEMATICLANDVERIFICATION(SyLVer)PROTOCOL

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Protocolchecksforsubdivision,consolidation-subdivision,consolidationandveriEicationsurveysincludethefollowing:

•  CheckingofthenumberoflotsintheUpdateLayer;•  Tolerancechecking;•  Checkingofthenumberofmotherlotsinthebase-map;and•  CheckingofthecomputedlandareaoftheparcelsintheUpdateLayerandtheBaseMapLayer

•  There are current initiative in the computerization of survey records including the LAMS project and the LandS Mode Research Project

•  Agoodparcelupdatingsystemisimportantasitprovidesuserwithup-to-dateinformation.Historicaldataarestillrelevantasitprovideschronologicalhistoryofparcelsthatmaybeneededinseveralpurposessuchasinvestigation.

•  TheproposedSyLVerprotocolmayprovideanotherlevelofimprovingandupdatingofcadastraldatabaseinacomputerenvironment.Itisanotherformof3Dcadastrewherethethirddimensionistime.

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CONCLUSIONS AND RECOMMENDATIONS

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•  GISsoftwarecanprovideanefEicientandcapabletoolintheimplementationofcadastraldatabasebuild-upandincrementalupdating.ArcGISprovidedmodulessuchastheParcelEditorthatcanreadilybeused.Thecostofbuyingsuchthirdpartysoftwaremustbeconsidered.However,alternativeGISsoftwareareavailable.

•  ImplementationusingactualdataisthenextlevelofthestudyanduseoftheSyLVerProtocol.ThismaybedoneincoordinationandsupportofDENR.

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CONCLUSIONS AND RECOMMENDATIONS

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•  Chen,Jun,XiaoguangZhou,ogZhilinLi.»Event-drivenIncrementalUpdatingofCadastralSpatialDatabaseConsideringTopologicalIntegrity.«Urumqi,XinjiangUygur,China:5thISPRS,2007.

•  DENR.DAO1998-12:ManualforSurveyors.1998.

•  DENR.DAO2007-29:RevisedRegulationsonLandSurveys.QuezonCity,Philippines:DENR,2007.

•  ESRI.ArcGISHelp.2012.

•  LAMSPhilippinesande-SurveyPlanpresentationbyEngr.WarlitoG.Quirimit(2016)

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REFERENCES

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Thank you for your attention!!!

Try not to become a person of success, but rather try to become a person of value - Albert Einstein

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