resurvey of cadastral maps - home || roti material/ppt/hitech/re-survey of... · – beginning in...
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RESURVEY OFCADASTRAL MAPS
ORSACODISHA SPACE APPLICATIONS CENTRE
BHUBANESWAR
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MAPPING LAND PARCELSMethodologies Recommended by NLRMP
1. GROUND METHOD
2. AERIAL PHOTOGRAMMETRY
3. HIGH RESOLUTION SATELLITE IMAGERY
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What is Photogrammetry• Photogrammetry is the art and science of making accurate measurements by
means of aerial photography:– Analog photogrammetry (using films: hard-copy photos)– Digital photogrammetry (digital images)
• Aerial photographs were the first form of remote sensing imagery.
• Differences between photogrammetry and Remote Sensing are thatphotographs are:– Black and white (1 band) or color (blue, green, red, and IR)– Wavelength range of 0.3-1.0 m– Use cameras– One type of remote sensing imagery
AIR PHOTO
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Types of vantage points to acquirephotographs
• Vertical vantage points• Low-oblique vantage points• High-oblique vantage points
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Goosenecks of the
San JuanRiver
in Utah
Goosenecks of the
San JuanRiver
in Utah
Vertical Aerial PhotographyVertical Aerial Photography
Jensen, 2000Jensen, 2000
Altitudeabove-ground-level (AGL)
Vertical AerialPhotograph Over
Level Terrain
Principal point (PP)
Opticalaxis
Camerafilm plane
fieldof view
Altitudeabove-ground-level (AGL)
Vertical AerialPhotograph Over
Level Terrain
Principal point (PP)
Opticalaxis
Camerafilm plane
fieldof view
Most are vertical aerial photography
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Low-oblique photograph of a bridge onthe Congaree River near Columbia, SC.Low-oblique photograph of a bridge onthe Congaree River near Columbia, SC.
Low-oblique Aerial PhotographyLow-oblique Aerial Photography
Jensen, 2000Jensen, 2000
Low-Oblique AerialPhotograph Over
Flat Terrain
Horizonis not shownin photograph
Opticalaxis
field ofview
Low-Oblique AerialPhotograph Over
Flat Terrain
Horizonis not shownin photograph
Opticalaxis
field ofview
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High-oblique photograph of thegrand Coulee Dam in Washington
in 1940
High-oblique photograph of thegrand Coulee Dam in Washington
in 1940
High-oblique Aerial PhotographyHigh-oblique Aerial Photography
Jensen, 2000Jensen, 2000
High-Oblique AerialPhotograph Over
Flat Terrain
Horizon isshown in thephotographOptical
axis
field ofview
High-Oblique AerialPhotograph Over
Flat Terrain
Horizon isshown in thephotographOptical
axis
field ofview
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Color Science
• Additive primary colors :– Blue, Green, and Red
• Subtractive primary colors (orcomplementary colors):– Yellow, Magenta, and Cyan
• Filters (subtract or absorb some colorsbefore the light reaches the camera):– Red filter (absorbs green and blue, you can
see red)– Yellow (or minus-blue) filter (absorbs blue,
allows green and red to be transmitted,which is yellow)
– Haze filter (absorbs UV)
additive
Subtractive
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Types of photographs
• Black and white photographs– Panchromatic (minus-blue filter used to eliminate UV and blue
wavelengths)– IR (IR-sensitive film and IR only filter used to acquire photographs at
0.7- 1.0 m )– UV (at 0.3-0.4 m, low contrast and poor spatial resolution due to
serious atmospheric scattering)• Color photographs
– Normal color (Haze filter used to absorb UV and create true color 0.4-0.7 m, or blue, green, red)
– IR color (Yellow filter used to eliminate blue and create IR color (orfalse-color infrared) of 05-1.0 m, or green, red, and IR)
– 4 bands (blue, green, red, and IR)
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Normal color
False-color infrared
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Normal color False-color infrared
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Scale of photographs
Principal Point
Opticalaxis
Cameralens
Focal length,f
A B
a bo
P
Positiveprint
Real-worldobject space
Imagespace Altitude
abovegroundlevel,H
Exposure Station, L
Principal Point
Opticalaxis
Cameralens
Focal length,f
A B
a bo
P
Positiveprint
Real-worldobject space
Imagespace Altitude
abovegroundlevel,H
Exposure Station, L Image size/ real
world size : S = ab/AB
Focal length/altitude aboveground: S = f / H
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Scale (2)
56.1’0.113”
6’0.012”
56.1’0.113”
6’0.012”
Average elevationabove sea level,
h
Cameralens
Focal lengthf
Exposure station, L
A B
e go
P
Sea level
C
D
Highest elevationabove sea level,
hmax
Lowest elevationabove sea level,
hmin
c d
Altitudeabove
sea levelH
E
G
a bImagespace
Objectspace
Average elevationabove sea level,
h
Cameralens
Focal lengthf
Exposure station, L
A B
e go
P
Sea level
C
D
Highest elevationabove sea level,
hmax
Lowest elevationabove sea level,
hmin
c d
Altitudeabove
sea levelH
E
G
a bImagespace
Objectspace
1’ = 12 ”
S = 0.012/ (6 x 12) = 1/6000 S = f / (H-h)
Max scale, minimum scale, andaverage or nominal scale
In real world
In the image
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Digital Cameras
• Use an area array of solid-state charge-coupled-device(CCD) detectors. Thedetectors are arranged in amatrix format with mcolumns and n rows.
• Analog (continuous) signals(voltage) are converted into(discrete) digital brightnessvalue (DN)
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Orthophotographs anddigital orthoimagery
• An aerial photograph that has all the distortions due to camera tilt, scale,oblique, and surface relief.
• Photograph after corrected by ground control points (x, y, z) or digitalelevation model (DEM), namely orthorectification, called orthophotograph,orthophoto, or digital orthoimagery.
• Not as photographs, they have different scales in different terrain relief,orthophotos have only one scale, no distortion, and have true distance,angle, and area. Orthophotos can be directly input into GIS as basemap orfor interpretation.
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Orthorectification
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Extraction of Building Infrastructurebased on orthophotographs
Extraction of Building Infrastructurebased on orthophotographs
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Orthophotograph draped over a DEMOrthophotograph draped over a DEM
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Orthorectification of SIMBA camera photos inassisting ASPeCt sea ice observations
Blake et al. to be submitted
Orthorectifiedphoto
PhD studentBlake Weisslingin SIMBA Oct-Nov. 2007
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orthorectification
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Satellite photographs
• Extensive collections of photographs have been acquired frommanned and unmanned Earth or Mars-orbiting satellites.– Beginning in 1962, USA acquired photographs of moon for Apollo mission– 1995, USA declassified intelligence satellites photographs of Sino-Soviet
acquired 1960-1972 at 2-8 m resolution.– 2000, Russia launched satellites acquired photographs of 2 meter resolution– 1999, Mars Orbiter Camera (MOC) onboard the Mars Global Surveyor (MGS)
of NASA acquires Mars photographs with 1.2 – 12 m resolution– 2003, High Resolution Stereo Camera (HRSC) on board the ESA Mars Express
acquires Mars photographs with 10 m resolution, selected areas will beimaged at 2 meters resolution.
– 2005, High Resolution Imaging Science Experiment (HiRISE) on board NASAMRO (Mars Reconnaissance Orbiter) acquires Mars photographs with up to 25cm resolution.
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NECESSITY OF CADASTRAL RESURVEY
Cadastral maps were prepared in different periods duringvarious settlements.
Cadastral maps of Odisha of different villages were preparedduring and are being used
1925-30, 1952-56, 1975-77, 1980-85, 1991-95, 1996-99, 2001-03, 2006-07 etc.
These maps are being used as Hall Maps.
Parcel geometry changes due to: division of plots, sale &mutation, natural process recourse, land use pattern etc.
These changes are not depicted in the Cadastral Map till thenext Settlement
The settlement operations by conventional methods are highlytime consuming
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CADASTRAL RESURVEY
BY USING
ORTHO IMAGE DATA PRODUCTS,DGPS, ETS AND GROUND VALIDATION
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STEPS FOR RESURVEY
4. GEOREFERENCING OF CADASTRAL MAP FOR VILLAGE BOUNDARY AND AREACONFIRMATION
5. PARCEL VECTOR GENERATION FROM ORTHOIMAGE
7. OBSCURED AREA SURVEY
2. TASKING AND ACQUISITION OF WORLDVIEW II STEREO SATELLITE DATA, EXISTINGDIGITAL CADASTRAL MAPS AND AUTHENTICATED UP-TO-DATE RECORD OFRIGHTS (ROR)
6. FIELD VALIDATION OF IMAGE DERIVED PARCEL VECTOR
9. GENERATION & LINKING OF ROR DATA
10. VECTORISATION AND INTEGRATION OF MUTATION DATA UP TO THE DATE OFSURVEY NOTIFICATION
3. ORTHOIMAGE GENERATION AND GROUND VALIDATION
8. INTEGRATION OF FIELD SURVEY VECTOR WITH IMAGE DERIVED VECTOR TOGENERATE THE DRAFT CADASTRAL MAP
11. FINALISATION OF DRAFT CADASTRAL MAP
1. GROUND CONTROL POINT (GCP) ESTABLISHMENT - MONUMENTATION
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PRIMARY (16 km x 16 km grid)
SECONDARY( 4 Km x 4km grid )
MONUMENTATION PLANNING OF PRIMARY/SECONDARY GROUND CONTROL POINTS (GCPs)
GROUND CONTROL POINT (GCP)ESTABLISHMENT - MONUMENTATION
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GCP AS SEEN ON THE SATELLITE IMAGE/ FIELD
S-12-01-10
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GROUND CONTROL POINT NETWORK
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ORTHOIMAGE
ORTHO IMAGE GENERATION
The ortho-rectification is the process ofreducing geometric errors inherentwithin photography and imagery .The variables contributing to geometric errorsinclude :
- Camera and sensor orientation- Systematic error associated with thecamera or sensor
-Topographic relief displacement-Earth curvature
The orthographic image is constructed byresampling the original image pixels into theirnew Orthorectified positions WORLD VIEW –II ,RESOLUTION – 50CM
NARSINGHPUR BLOCK,CUTTACK DISTRICTDATA ACQUISITION –MAY, 2010
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PREPARATION OF MOSAIC OF ORTHO IMAGE DISTRICT WISE
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TIE-LINES OF DIFFFERENT LENGTHS ARE MEASURED IN THE FIELD AT 4TO 5 LOCATIONS OF EACH ORTHO IMAGE SCENE.
LENGTHS OF CORRESPONDING TIE-LINES ARE MEASURED FROM ORTHO-IMAGE AND COMPARED.
TOLERANCE LIMIT IS 20 CM.
ONE SHEET OF HIGH RESOLUTION SATELLLITE IMAGE (WV II) COVERSAPPROXIMATELY 200 SQ KM AREA
VALIDATION OF ORTHO IMAGE AND QUALITYCHECKING
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LENGTH MEASUREMENT FROM IMAGE (SYSTEM GENERATED)VERTEX TO VERTEX MEASUREMENT (ETS)
VALIDATION OF ORTHOIMAGE BY GROUND MEASUREMENT
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IDENTIFICATION OF BIJUNCTION / TRIJUNCTION POINTS
COLLECTION OF DGPS COORDINATES OF JUNCTION POINTS
GEO-REFERENCING OF MOSAICED VILLAGE MAP
EDGE ADJUSTMENT FOR DELINEATION OF VILLAGE BOUNDARY
MOSAICING OF EXISTING CADASTRAL MAP
SUPERIMPOSITION OF GEO-RFERENCED VILLAGE MAP ON ORTHO-IMAGE
GEOREFERENCING OF CADASTRAL MAP FORVILLAGE BOUNDARY AND AREA
CONFIRMATION
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MOSAIC OF DIGITISED CADASTRAL MAPS
The vendor is provided scanned cadastral sheets, digitized cadastral layer in the form ofAutoCAD .dwg as well for the individual mouza by DOLR&S / ORSAC
Scanned Cadastral Sheets Mosaic cadastral layer
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IDENTIFICATION OF COMMON FEATURES ON DIGITALCADASTRAL MAP AND ORTHOIMAGE
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CADASTRAL MAPS OF 7 VILLAGES OF ATHAGAD TAHASIL GEO-REFERENCED
DELINEATION & CONFIRMATION OF VILLAGE BOUNDARY WITHADJACENT VILLAGES ON ORTHOIMAGE
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VILLAGE BOUNDARY EXTRACTED FROM OLD CADASTRAL GEOREFERENCEDMAPS FOR RESURVEY WORK
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ETS/ DGPS SURVEY OF GHARBARI AREA AND BOUNDARY (CONFIRMATION) FORRESURVEY WORK
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GHARBARI PLOTS INTEGRATED TO VILLAGE MAP AND FUTHER INDIVIDUAL PLOTDELINEATION FOR RESURVEY WORK
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VILLAGE MAP (CADASTRAL) OF BIJEPADMANAVPUR ONORTHOIMAGE
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TOTAL VILLAGE AREA CALCULATED AFTER GEOREFERENCING SHOULD NOT VARY BEYOUND 2% OFTHE SUM TOTAL AREA OF THE RoR/ NOTIFIED VILLAGE AREA. IF THE DIFFERENCE IS BEYOUND 2%THE BOUNDARY WILL BE DEMARCATED THROUGH FIELD OBSERVATION USING DGPS/ETS WITH THEHELP OF CONCERNED TAHASIL OFFICIALS
VILLAGE BOUNDARY OF BIJEPADMANAVPUR ON ORTHOIMAGE
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Geo-referenced Cadastral vector of Nuasasan village (1952-53), Athagad Tahasil, Cuttack
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Anantpur village (1952-53), Athagad Tahasil, Cuttack
Anantpur village resurvey map
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Change of Parcels (Plots)
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Change of Land use
Natural Recourse
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Cadastral Map Problems
Consolidation
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VILLAGE AREA CONFIRMATION
SL.NO. VILL_NAME ROR AREA(Ac.)
CADASTRAL_MAP AREA(Ac.)
IMG AREA(Ac.)
% DIFF (IMG-ROR)
% DIFF (IMG-CAD)
1 GOPINATHPUR 243.58 243.578 243.16 -0.17 -0.172 GUNDICHAPUR 371.52 371.515 372.03 0.14 0.143 UDAYAPURDALA 162.61 162.612 163.34 0.45 0.454 UDAYAPURDESH 138.57 138.573 138.32 -0.19 -0.195 GAJAAMBA 43.58 43.12 43.81 0.53 1.586 HARIPURA 137.61 136.698 136.67 -0.68 -0.027 JORANDA 386.05 384.034 384.86 -0.31 0.228 KARKAMALA 43.59 43.806 43.43 -0.36 -0.869 NAURATH 9.44 9.573 9.29 -1.60 -3.03
10 PATALINGA 117.54 114.185 115.29 -1.95 0.9611 TARDING 363.35 363.745 360.85 -0.69 -0.8012 BIJEPADMANAVPUR 316.103 317.404 317.492 0.44 0.0313 PITAMBARPUR 313.815 315.454 314.887 0.34 -0.18
VILLAGE AREA FROM THE IMAGE SHOULD NOT VARY 2% WITH THETOTAL ROR AREA
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8. QULALITY CHECKING OF VILLAGE BOUNDARY BY ORSAC
Georeferencing of digitised village Cadastral maps with image .Boundary adjusted to field bunds of the image and boundary confirmed
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Boundary adjusted to field bunds of the image and boundary confirmedAdvised for plot generation by mirror image principle
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Digitised cadastral maps of one tahasil georeferenced and verified by ArcGISenvironment: For QC
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Seamless Village boundaries confirmed after QC
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Mosaic Village boundaries of Balianta Tahasil from georeferenced Cadastralmaps
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Problems found:Common plots appearing in adjacent villages in properly georeferenced mapReferred for field verification by the help of Tahasil officials
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Problems found:Geometry of plots changed in adjacent villages in properly georeferenced mapReferred for field verification by the help of Tahasil officials
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A FEW OBSERVATIONS DURING QUALITY CHECKING
Problems found:Common plots appearing in adjacent villages in properly georeferenced mapReferred for field verification by the help of Tahasil officials
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A FEW OBSERVATIONS DURING QUALITY CHECKING
AREAVARIATION
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Problems found inRoRTotal Village Area variation
A FEW OBSERVATIONS DURING QUALITY CHECKING
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SELECTION OF SEGMENT
PARCEL VECTOR EXTRACTION IN EACH SEGMENT
TRANSFER OF OLD PLOT NOS TO NEW PARCELS
SELECTION OF OBSCURED AREA FOR FIELD MEASUREMENT
DELINEATION AND EXTRACTION OF CULTURAL FEATURES
PARCEL VECTORISATION
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PLOT LEVEL VECTORISATION AND MAP GENERATIONFROM ORTHOIMAGE
PARCEL BOUNDARY VECTORISATION WILL BE DONE ADOPTING WHOLE TOPART APPROACH
THE PARCEL BOUNDARY WILL BE DRAWN ALONG THE CENTRE LINE OF THEBUND AS SEEN ON THE IMAGE
PARCEL BOUNDARY VECTORISATION WILL BE DONE ACCORDING TOMIRROR IMAGE PRINCIPLE BY ONSCREEN DIGITISATION METHOD
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PLOT VECTORISATION
Vectorisation of plots byonscreen digitisation method
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PLOT VECTORISATION AND MAP GENERATION FROM ORTHO IMAGE
PLOT VECTOR EXTRACTED FROM IMAGE WITH PLOT NUMBER FROM ROR
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• AFTER THE COMPLETION OF VECTORISATION , GROUND TRUTHING WILLBE UNDERTAKEN IN 5% OF TOTAL NUMBER OF PLOTS FOR EACHVILLAGE
• THE FIELD BUND DIMENSIONS WILL BE MEASURED BY THE VENDORENGAGED FOR THE VECTORISATION WORK USING DGPS AND ETS
• THE MEASUREMENTS WIL BE DONE ON RANDOMLY SELECTED PLOTSDISTRIBUTED THROUGHOUT THE VILLAGE
• THE PLOTS FOR MEASUREMENT WILL BE SELECTED BY THE QUALITYASSURANCE TEAM
• THE PLOT DIMENSIONS MEASURED USING DGPS AND ETS WILL BEVERIFIED OVER THE IMAGE BY THE QC TEAM
• IF THE DIMENSION OF ANY MEASUREMENT BETWEEN TWO VERTICESVARIES BEYOND 20 CM THE VENDOR HAS TO REDRAW THE PARCELSAGAIN
FIELD VALIDATION OF IMAGE DERIVED PARCELVECTOR
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FIELD VALIDATION OF IMAGE DERIVED PARCEL VECTOR
(QC-2)
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FIELD VALIDATION OF IMAGE DERIVED PARCEL VECTOR
(QC-2)
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PLOT BOUNDARY UNDER GROOVES
AREAS ON URBAN FRINGE WTHPLOTTING
VILLAGE BOUNDARY OBSCURED CONSTRUCTION SITES
SETTELMENT/HABITATIONAREAS
CORNER VERTICES OBSCURED
OBSCURED AREA SURVEY
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SURVEY THROUGH DGPS & ETS
• VEGETATED AREA
• URBAN AND RURAL HABITATION AREA
• OBSTRUCTION AREAS
• LOCATING CORNER VERTICES
OBSCURED AREA SURVEY
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SURVEY THROUGH DGPS & ETS
GHARBARI AREAS ARE TO BE SURVEYED FIRST USING DGPS & ETS WITHTHE HELP OF LOCAL REVENUE OFFICIALS AND PREPARATION OF RoR FOR
THE GHARBARI AREAS
SEPARATE MAP FOR THE GHARBARI AREA WILL BE PREPARED FIRST ANDHAS TO BE AUTHENTICATED BY CONCERNED TAHASILDAR FOR EACHVILLAGE, THE SAME VECTOR WILL BE INTEGRATED TO THE BLANK VILLAGEBOUNDARY BEFORE EXTRACTION OF OTHER PARCEL BOUNDARIES FROMTHE ORTHOIMAGE
OBSCUREDAREA SURVEY
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INTEGRATION OF OBSCURED VERTICS
CORRECTION OF UNIDENTIFIED FEATURES AFTER FIELD VERIFIED DATA
PARCELS UNDER TREE CLAD AREA
INTEGRATION OF GHARBARI AREA
INTEGRATION OF FIELD SURVEY TO IMAGEDERIVED VECTOR
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DGPS/ETS SURVEYED AREA INTEGRATION
WORLDVIEW-0.5 M SATELLITE DATA, 2009 WITH PLOT VECTOR
VECTOR FROM IMAGE
VECTOR FROM FIELD
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DGPS/ETS SURVEYED AREA INTEGRATION
WORLDVIEW-0.5 M SATELLITE DATA, 2009 WITH PLOT VECTOR
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LINK THROUGH PLOT NUMBER WITH BHULEKH RECORD &QUALITY CHECK
GIS DATABASE CREATION OF ROR USING
ORTHOIMAGE DERIVED PLOT VECTORS
DERIVATION OF AREA & CHAHUADI DETAILS FROMORTHOIMAGE VECTORS AND INPUT TO ROR
INPUTTING PLOT NUMBERS TO ORTHOIMAGE DERIVED MAPS FROMGEOREFERENCED DIGITISED CADASTRAL MAP
PRINTING OF LAND PARCEL MAP (LPM) WITH ROR FORTENANT INTERACTION
GENERATION & LINKING OF ROR
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VECTOR ATTRIBUTE TABLE
LINKING OF ROR
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VECTOR ATTRIBUTE TABLE WITH ROR DATABASE
LINKING OF ROR
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AFTER LINKING WITH ROR PLOTS, REMAINING UNIDENTIFIEDFROM THE IMAGE HAVE TO BE RESOLVED
PLOTS ARE TO BE DRAWN AS PER TIPPONS OR DIMENSIONSPROVIDED BY THE CONCERNED TAHASILDAR
PLOTS ARE TO BE IDENTIFIED BY LOCAL RI/AMIN AND THEVERTICES ARE TO BE MEASURED BY DGPS/ETS AND VECTORS
HAVE TO BE INCORPORATED INTO THE MAP
DATA ACQUISITION IS BEING DONE AT A DIFFERRENT TIME
THE MUTATION TAKES PLACE IN VILLAGES TILL THE DATE OFSURVEY NOTIFICATION
VECTORISATION AND INTEGRATION OFMUTATION DATA UP TO THE DATE OF
SURVEY NOTIFICATION
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TITLE CONFIRMATION THROUGH INTERACTION WITH TENANTS
A4 SIZE MAP GENERATION FORTENANT INTERACTION
LANDPARCELMAP(LPM)
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• MAP SCALE : 1: 2000 (16 INCH= 1 Mile)
(INSET 1:1000)
• MAP SIZE A1 SIZE
• CODING-AS PER NRLMP GUIDELINE
• EXISTING NUMBERING SYSTEM TO BE FOLLOWED AND NEWPLOT NOS ARE TO BE ASSIGNED
• SYMBOL-AS PER EXISTING FORMAT(ALAMAT)
• FONT:-ORIYA AND ENGLISH
• DELIVERABLE:-BOTH HARD AND SOFT COPY
INCORPORATION ALL NECESSARY SUGGESTIONS AND RECOMMENDATIONSMADE BY THE TAHASILDAR DURING KHANAPURI OPERATION TO THE MAP,PREPARE THE FINAL VILLAGE MAP IN THE PROVISIONAL FORMAT ANDSUBMIT IN REQUIRED DELIVERABLE FORMAT
FINALISATION OF DRAFT CADASTRALMAP /GIS DATABASE
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FINALISATION OF DRAFT CADASTRALMAP /GIS DATABASE