Skip Maine state header navigation
Tags
Maine, York County, United States, land surface, ImageryBaseMapsEarthCover
Use in each Town's GIS for viewing and analysis along with sale to surveying, engineering, GIS and other intersted individuals and companies.
This OGC-compliant web mapping service (WMS) provides 2007 aerial orthophotos at a resolution of 6 inches for most of York County, Maine. Ortho Imagery - As the prime contractor, Bradstreet Consultants, Inc. used the aerial photography flown in one session on April 23-26, 2007, by The Sanborn Map Compay, Inc. of Charlotte, NC who acquired approximately 4,000 photos @ a resolution of 0.5' pixel (similar to 1"=600') with airborne GPS using a Z/I Digital Mapping Aerial Camera. Bradstreet Consultants, Inc. painted and repainted ground targets for photo survey control points (~400) to support full analytical aerotriangulation. The aerotriangulation solution was used to set up each stereopair of photos for orthorectification and DTM compilation. The ortho imagery was rectified from the natural color digial imagery employing a digital terrain model (DTM) collected from the 2007 imagery and supplemented from updating some town's original DTM and some town's from scratch using the imagery in softcopy (digital) stereoplotter in the Kork KDMS and DAT/EM AutoCAD DWG format.
Bradstreet Consultants, Inc, Southern Maine Regional Planning Commission, USGS, State of Maine, Maine GeoLibrary Board.
Data should not be used beyond the scale of 1:1200
Extent
There is no extent for this item.
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Bradstreet Consultants, Inc, Southern Maine Regional Planning Commission, USGS, State of Maine, Maine GeoLibrary Board.
ground condition
Data should not be used beyond the scale of 1:1200
This OGC-compliant web mapping service (WMS) provides 2007 aerial orthophotos at a resolution of 6 inches for most of York County, Maine. Ortho Imagery - As the prime contractor, Bradstreet Consultants, Inc. used the aerial photography flown in one session on April 23-26, 2007, by The Sanborn Map Compay, Inc. of Charlotte, NC who acquired approximately 4,000 photos @ a resolution of 0.5' pixel (similar to 1"=600') with airborne GPS using a Z/I Digital Mapping Aerial Camera. Bradstreet Consultants, Inc. painted and repainted ground targets for photo survey control points (~400) to support full analytical aerotriangulation. The aerotriangulation solution was used to set up each stereopair of photos for orthorectification and DTM compilation. The ortho imagery was rectified from the natural color digial imagery employing a digital terrain model (DTM) collected from the 2007 imagery and supplemented from updating some town's original DTM and some town's from scratch using the imagery in softcopy (digital) stereoplotter in the Kork KDMS and DAT/EM AutoCAD DWG format.
Use in each Town's GIS for viewing and analysis along with sale to surveying, engineering, GIS and other intersted individuals and companies.
ground condition
none
Data should not be used beyond the scale of 1:1200
Bradstreet Consultants, Inc, Southern Maine Regional Planning Commission, USGS, State of Maine, Maine GeoLibrary Board.
Orthoimagery data of York County Area, Maine clipped to within approximately 100 feet beyond the town line.
Horizontal_Positional_Accuracy_Report: Gound control used in aerotriangulation solution accurate to within 0.1 ft. Said solution was used to compile 1:1200 vector base mapping, which was subsequently used to control the orthorectification process. Vector data was compiled to meet ASPRS Class 1 accuracy standards. The orthorectification process was applied to the imagery and those features which are at ground level. No attempt was made to correctly rectify elevated structures as part of this project.
Gound control used in aerotriangulation solution accurate to within 0.1 ft. Said solution was used to compile terrain data to support generation of 2 foot contour data. This elevation data was subsequently used to control the orthorectification process. The elevation data was compiled to meet ASPRS Class 1 accuracy standards. The orthorectification process was applied to the imagery and those features which are at ground level. No attempt was made to correctly rectify elevated structures as part of this project.
Ortho Imagery - As the prime contractor, Bradstreet Consultants, Inc. used the aerial photography flown in one session on April 23-26, 2007, by The Sanborn Map Compay, Inc. of Charlotte, NC who acquired approximately 4,000 photos @ a resolution of 0.5' pixel (similar to 1"=600') with airborne GPS using a Z/I Digital Mapping Aerial Camera. Bradstreet Consultants, Inc. painted and repainted ground targets for photo survey control points (~400) to support full analytical aerotriangulation. The aerotriangulation solution was used to set up each stereopair of photos for orthorectification and DTM compilation. The ortho imagery was rectified from the natural color digial imagery employing a digital terrain model (DTM) collected from the 2007 imagery and supplement3ed from updating some town's original DTM and some town's from scratch using the imagery in softcopy (digital) stereoplotter in the Kork KDMS and DAT/EM AutoCAD DWG format.
The SID files provided by Bradstreet were used as the source for this OGC-compliant web mapping service (WMS). The SID files are resampled to create overview TIFs and those provided in a MapServer-based environment.
The Maine Office of GIS and the GeoLibrary Board provide web mapping services to distribute aerial photos and other digital data. A WMS is not a web application which you can see in a web browser; rather, it requires you to add the service to a GIS software application.