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FGDC CSDGM Metadata
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C_Sun_Prairie_2020edit_Proje
file://\\SP-Users\GIS\Maps\WebGIS\ArcPro\SanitarySewer\SanitarySewer.gdb
Local Area Network
002
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-9925928.638906
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5346198.822205
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Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_Web_Mercator_Auxiliary_Sphere
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Rename R:\ResourceData\Orthophotos\2020\Tile_Index\C_Sun_Prairie_2020.sid R:\ResourceData\Orthophotos\2020\Tile_Index\C_Sun_Prairie_2020edit.sid RasterDataset
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20210917
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20210917
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FGDC
Microsoft Windows 10 Version 10.0 (Build 18363) ; Esri ArcGIS 12.8.3.29751
C_Sun_Prairie_2020edit_Proje2
2020-04-04T00:00:00
2020-12-02T00:00:00
Ayres Associates
5201 E. Terrace Dr., Suite 200
Madison
Wisconsin
53178
US
(608) 443-1200
(608) 299-2184
1
-89.305209
-89.166134
43.224455
43.135585
This project established digital, 4-band orthoimagery services for the Madison Metro Area of Dane County, Wisconsin as part of FlyDane and the Wisconsin Regional Orthoimagery Consortium (WROC).
Ayres Associates provided Dane County, Wisconsin, with digital, 4-band orthoimagery of the Madison Metro Area in 2020 as part of FlyDane/WROC. The aerial imagery was collected on April 4th, 16th, 18th and 19th using a Microsoft Vexcel UltraCam Eagle sensor mounted in a fixed-wing aircraft. Aerial imagery was collected to support 0.25 foot ground sample distance (GSD) orthoimagery to meet ASPRS Class II horizontal accuracy specifications at 1"=50' map scale. The 6-inch pixel orthoimagery was produced to meet or exceed a horizontal accuracy of 0.7 feet RMSE according to ASPRS Positional Accuracy Standards for Digital Geospatial Data. Resultant orthoimagery was rectified to a DEM created from LiDAR collected in 2017. Orthoimagery was delivered in PLSS quarter-section GeoTiff and MrSID tiles and a project wide MrSID mosaic. Supplemental Information: FlyDane/WROC is a multi-entity group of county members and partners led by WROC representatives from Ayres Associates. The goal of the consortium is to build and sustain a multi-participant program to acquire digital orthoimagery and elevation data throughout Wisconsin. Orthoimagery was collected for the Madison Metro Area of Dane County in 2020 to provide consistent deliverable products and accuracy standards for each of the participating entities.
digital
4-band
orthoimagery
3-inch
Not to be used for purposes other than those strictly outlined in the 2020 FlyDane/WROC program.
Wisconsin Regional Orthoimagery Consortium (WROC)
Village of Cottage Grove
Village of DeForest
City of Fitchburg
City of Madison
Town of Madison
City of McFarland
City of Middleton
Village of Oregon
City of Stoughton
City of Sun Prairie
Village of Waunakee
Madison Planning Organization (MPO)
Madison Metropolitan Sewage District (MMSD)
Fred Iausly
Dane County Land Information Office
201 Martin Luther King Jr. Blvd., Rm 339
Madison
Wisconsin
53703
iausly@countyofdane.com
US
(608) 266-4398
FlyDane
File Geodatabase Raster Dataset
dataset
EPSG
6.18.3(9.3.1.2)
2
1
0
842235.834000 505130.028000
842235.834000 537441.028000
879261.834000 537441.028000
879261.834000 505130.028000
860748.834000 521285.528000
148104
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0.250000
Band_1
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0.000000
Band_2
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0.000000
Band_3
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Band_4
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Band_5
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20210917
Ayres Associates
5201 E. Terrace Dr., Suite 200
Madison
Wisconsin
53178
US
(608) 443-1200
(608) 299-2184
Ayres Associates
Images were color corrected to match adjacent flight lines. The resulting imagery was globally tilted in terms of contrast and color to form a radiometrically consistent orthophoto mosaic.
These data cover the entirety of the 2020 FlyDane/WROC program.
Ground control consisted of photo identifiable surveyed points. The imagery was collected using a Microsoft Vexcel UltraCam Eagle at 7cm GSD. Image quality was verified during the post flight review phase. Factors considered during this review included, but were not limited to, the presence of cloud cover, contrails, light conditions and sun flare. A rigorous Aerotriangulation process was performed and supplemented by the photo ID survey points. The triangulated strips were rectified to a DEM created from LiDAR collected in 2017. The imagery was mosaicked using manual seamlines generation and tone/color balanced to a project-wide consistency. PLSS quarter-section RGBN tiles were extracted from the mosaic and each individual tile was reviewed for artifacts and anomalies and adjusted as part of quality control procedures. The images were reviewed for rectification problems such as bridge displacements and seamline issues caused by the underlying digital elevation model. When necessary, local corrections to the imagery were performed to minimize such effects.
2020-05-21T00:00:00
Pixel
54267
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FALSE
LZ77
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pixel codes
FGDBR
TRUE
row and column
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