city of philadelphia
DESCRIPTION
PACSCL Geo-History Symposium Department of Records GIS and Parcel Mapping: Georeferencing, Edgematching and Annotation. City of Philadelphia. December 2005. IT Timeline and Historical Context. Street Centerline rectified to Orthophotography. Records Department digitizes Registry Maps. - PowerPoint PPT PresentationTRANSCRIPT
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City of Philadelphia
PACSCL Geo-History Symposium
Department of RecordsGIS and Parcel Mapping:Georeferencing, Edgematching and Annotation December 2005
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Pla
nnin
g C
omm
issi
on s
cans
par
cels
IT Timeline and Historical Context
Str
eet C
ente
rlin
e is
dev
elop
ed
Sta
ndar
diza
tion
of G
IS s
oftw
are
Ort
hoph
otog
raph
y an
d P
lani
met
rics
cre
ated
Str
eet C
ente
rlin
e re
ctifi
ed to
Ort
hoph
otog
raph
y
Rec
ords
Dep
artm
ent d
igiti
zes
Reg
istr
y M
aps
1991 2005O
rtho
phot
ogra
phy
Upd
ate
Land
Rec
ords
Met
abas
e de
sign
ed
DO
R S
crub
Edi
ting
Edg
emat
chin
g an
d D
PR
Pilo
tE
dgem
atch
ing
and
DP
R
City
wid
e an
nota
tion
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City Environment
Commitment to GIS
Infrastructure
Policies
Standard Software – ESRI product line
Facilitates the Exchange of Data among City Agencies
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Parcel Layer – Accuracy / Quality
Scanned
Geo-referenced
Orthophotography
Control Points
Edge-matched
Seamless Integration of Map Sheets
Expanded ability to scroll across entire City
Increases usability
Annotated
Engineering Accuracy Preserved
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Typical DOR Parcel Registry Map
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More than 4,800 Maps Tile Across Philadelphia
3 Parcel Registry Maps Located in Tile 14
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Georeferencing 3 Individual Parcel Maps
Area of Parcel Map Overlap
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Georeferencing with Orthophotography
1. Curb lines are extracted from orthophotos2. Scanned parcel maps are scaled and rotated to line up with curb lines
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Another Perspective on Georeferencing
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Pre Edgematching and DPR
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Post Edgematching and DPR
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Scanned Parcel Registry Map
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Existing GIS Parcel Features
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Parcel Features Viewed with Annotation
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Highly Accurate Parcel Layer as Citywide Base Map
Department of RecordsGIS Parcel Layer
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Parcel Maps Leveraged by Applications Internet Parcel Explorer
Photo Archives
Culture Browser
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City of PhiladelphiaDepartment of Records
AcknowledgementM&M Solutions LLC
Thank You!