City of Philadelphia PACSCL Geo-History Symposium Department of Records GIS and Parcel Mapping: Georeferencing, Edgematching and Annotation December 2005
Planning Commission scans parcels IT Timeline and Historical Context Street Centerline is developed Standardization of GIS software Orthophotography and Planimetrics created Street Centerline rectified to Orthophotography Records Department digitizes Registry Maps Orthophotography Update Land Records Metabase designed DOR Scrub Editing Edgematching and DPR Pilot Edgematching and DPR Citywide annotation
City Environment Commitment to GIS Infrastructure Policies Standard Software – ESRI product line Facilitates the Exchange of Data among City Agencies
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
Typical DOR Parcel Registry Map
More than 4,800 Maps Tile Across Philadelphia 3 Parcel Registry Maps Located in Tile 14
Georeferencing 3 Individual Parcel Maps Area of Parcel Map Overlap
Georeferencing with Orthophotography 1.Curb lines are extracted from orthophotos 2.Scanned parcel maps are scaled and rotated to line up with curb lines
Another Perspective on Georeferencing
Pre Edgematching and DPR
Post Edgematching and DPR
Scanned Parcel Registry Map
Existing GIS Parcel Features
Parcel Features Viewed with Annotation
Highly Accurate Parcel Layer as Citywide Base Map Department of Records GIS Parcel Layer
Parcel Maps Leveraged by Applications Internet Parcel Explorer Photo Archives Culture Browser
City of Philadelphia Department of Records Acknowledgement M&M Solutions LLC Thank You!