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20260210
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20260210
09304700
Tim Ruhren
NYS ITS Geospatial Services
518-242-5029
1220 Washington Avenue, Building 5 - Ground Floor
Albany
New York
12226
nysgis@its.ny.gov
20250811
ArcGIS Metadata
1.0
MappingWestchesterCounty_AerialPhoto2025
2025-08-08
NYS Office of Information Technology Services, Geospatial Services
NYS ITS Geospatial Services
Albany, New York
raster digital data
NYS Digital Ortho-imagery Program (NYSDOP)
2025 imagery in Westchester County, NY
These files contain 2025 digital Orthoimagery of Westchester County, New York. Image pixel size is 0.5' GSD. Image type is 4-band, RGB & NIR. Image horizontal accuracy is within 2 feet at the 95% confidence level (NSSDA). Each file contains an image covering 2000 feet by 3000 feet on the ground.
This digital Orthoimagery can serve a variety of purposes, from general planning to field reference for spatial analysis to a tool for revision of vector maps. It can also serve as a reference layer for GIS.
NYS Office of Information Technology Services - Geospatial Services
Tim Ruhren
NYS ITS Geospatial Services
518-242-5029
1220 Washington Avenue, Building 5 - Ground Floor
Albany
New York
12226
US
nysgis@its.ny.gov
Westchester County
New York
Ortho Photo
Digital Orthoimagery
Ortho Photo
Digital Orthoimagery
Westchester County
New York
None
ArcGIS Pro 3.4; ArcCatalog 10.8; Global Mapper v26.1; UltraMap v6.4.1.1; OrthoVista v14
true
-73.9907
-73.4620
41.3744
40.8494
ground condition
2025-04-09
2025-04-28
1
-73.990726
-73.462035
41.374354
40.849383
Not Applicable
The New York State Office of Information Technology Services makes no claims to the accuracy of the information in this file. THE GIS DATA IS PROVIDED AS IS AND WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED, AS TO THEIR PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. NYS ITS does not represent or warrant that the GIS data is error-free, complete, current, or accurate. The file naming convention was supplied by New York State. When the ortho tiles were created the file names were restricted to a numeric value representing the lower left corner of the ortho tile. These tiles were then all renamed using a batch script so that they reflected the N.Y. state standard (i.e. "e_06330878_06_12600_4bd_2025.tif"). Consistency of file naming was ensured by using a batch process. The file naming convention consists of the first letter for Central, East, West or Long Island for New York State Plane Coordinate Systems (NYSPCS). The following four numeric characters represent the first four characters of the "X" coordinate value for the tile's lower left corner coordinate in NYSPCS and the next four characters represent the first four characters of the "Y" coordinate value for the tile's lower left corner coordinate in NYSPCS. The next two numeric characters represent the tile's Ground Sampling Distance (GSD) value in ft. The following five numeric characters represent the Above Mean Terrain (AMT) nominal height at which the Ultracam sensor recorded or collected the original imagery for the corresponding area. The next three characters are "4bd" for 4-band orthophotos. Lastly, the last four numeric digits represent the year in which the particular ortho was created.
The project consisted of 2868 final tiles.
+/-2 ft. at the 95% confidence level (NSSDA) for 6 inch resolution.
NA
The Digital Natural Color aerial imagery was acquired in April 2025 using a Microsoft Ultracam Eagle sensor flown at a nominal height of 12600' AMT (Above Mean Terrain). GNSS/IMU data was also collected and processed using POSPac (version 8.8) Mobile Mapping Suite. The Ground Control used to support the 4-band ortho-imagery production was collected by identifying and surveying photo identifiable points (PID), using existing PIDs. The Aerial Triangulation (AT) was performed using Inpho Match-AT software. Digital Elevation Models (DEM) used for ortho imagery production were supplied by the state and updated as needed. The images were then orthorectified using Inpho OrthoMaster software. Color balancing, seamless mosaicking was performed by automatic seam line creation steps, and final extractions were also accomplished using Inpho OrthoVista software. A final radiometric correction was performed using Adobe PhotoShop software. The imagery product deliverables are GeoTIFF images with embedded header information describing the required projection, pixel size, tile size and other related data and corresponding world files (.tfw). Derivative compressed imagery is also available in JP2000 format.
2025-08-08
Shawn Benham
The Sanborn Map Company, Inc.
Vice President of Programs
719-502-1296
305 S. Rockrimmon Blvd., Suite 200
Colorado Springs
Colorado
80919
US
sbenham@sanborn.com
Aerial Imagery
2868
2
1
0
632999.999922 735999.999929
632999.999922 925999.999929
776999.999922 925999.999929
776999.999922 735999.999929
704999.999922 830999.999929
288000
0.500000
380000
0.500000
EPSG
5.3(9.0.0)
Band_1
255.000000
0.000000
8
Band_2
255.000000
0.000000
8
Band_3
255.000000
0.000000
8
Band_4
255.000000
0.000000
8