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CreateMosaicDataset \\en-gis-02\raster\aerial\2020\2020.gdb Aerial2020 "PROJCS['NAD_1983_2011_StatePlane_Wisconsin_South_FIPS_4803_Ft_US',GEOGCS['GCS_NAD_1983_2011',DATUM['D_NAD_1983_2011',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Lambert_Conformal_Conic'],PARAMETER['False_Easting',1968500.0],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',-90.0],PARAMETER['Standard_Parallel_1',42.73333333333333],PARAMETER['Standard_Parallel_2',44.06666666666667],PARAMETER['Latitude_Of_Origin',42.0],UNIT['Foot_US',0.3048006096012192]];-118121300 -97418300 3048.00609601219;-100000 10000;-100000 10000;3.28083333333333E-03;0.001;0.001;IsHighPrecision" # # NONE #
CalculateStatistics \\en-gis-02\raster\aerial\2020\2020.gdb\Aerial2020 1 1 # OVERWRITE "Feature Set"
BuildOverviews \\en-gis-02\raster\aerial\2020\2020.gdb\Aerial2020 # DEFINE_MISSING_TILES GENERATE_OVERVIEWS GENERATE_MISSING_IMAGES REGENERATE_STALE_IMAGES
Aerial2020
file://\\en-gis-02\raster\aerial\2020\2020.gdb
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2461620.250000
343421.000000
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GCS_NAD_1983_2011
Linear Unit: Foot_US (0.304801)
NAD_1983_2011_StatePlane_Wisconsin_South_FIPS_4803_Ft_US
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20210511
09581300
20210511
09581300
Ayres Associates
(608) 443-1200
Suite 200
Madison
Wisconsin
53718
US
20210511
ArcGIS Metadata
1.0
Rob Merry, Cheif Surveyor
Southeastern Wisconsin Regional Planning Commission (SEWRPC)
(262) 953-4289
5W239 N1812 Rockwood Dr., PO Box 1607
Waukesha
WI
53187
2020_NAD27
2021-01-20
Ayres Associates
raster digital data
Ayres Associates provided the Southeastern Wisconsin Regional Planning Commission (SEWRPC) with digital, 4-band orthoimagery services in 2020 in conjunction with Wisconsin Regional Orthoimagery Consortium (WROC) in 2020. The aerial imagery was collected on: 4/5, 4/7, 4/11, 4/16, 4/18, 4/19, 4/20, and 4/21 using an UltraCam Eagle M2 and M3 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 3-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 2015 and 2017. Orthoimagery was delivered in GeoTiff tiles according to SEWRPC tiling and naming scheme. The project area covers approximately 2,258 square miles and includes the counties of Ozaukee, Racine, Walworth, Washington, and Waukesha. Supplemental Information: The Wisconsin Regional Orthoimagery Consortium (WROC) is a multi-entity group of county members and partners led by regional planning commissions (RPCs) and 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 SEWRPC 2020 to provide consistent deliverable products and accuracy standards for each of the participating entities.
This project established digital, 4-band orthoimagery for Southeastern Wisconsin Regional Planning Commission (SEWRPC) in conjunction with the Wisconsin Regional Orthoimagery Consortium (WROC) in 2020.
Rob Merry
Southeastern Wisconsin Regional Planning Commission
Chief Surveyor
(262) 953-4289
PO Box 1607
Waukesha
Wisconsin
53187
US
rmerry@sewrpc.org
Ozaukee County
Waukesha County
Washington County
Walworth County
Racine County
digital
4-band
Wisconsin Regional Orthoimagery Consortium (WROC)
Southeastern Wisconsin Regional Planning Commission (SEWRPC)
3-inch
orthoimagery
2020_NAD27
ImageServer
None
As directed by SEWRPC.
As directed by SEWRPC. Users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual ground conditions. Users should not use these data for critical applications without a full awareness of its limitations. Not to be used for purposes other than those strictly outlined in the 2020 WROC SEWRPC program.
ground conditions
2020-04-05
2020-04-21
-88.8452
-87.7118
42.4714
43.5716
Raster File Type = TIFF Bit Depth/Pixel Type = 8-bit Raster Cell Size = .25 foot Interpolation or Resampling Technique = Cubic Convolution Required Vertical Accuracy = 1.2' at 95% confidence at well defined points
Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270
1
-88.337800
-88.154414
43.071423
42.927309
Last metadata review date: 20200415
None.
None.
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 WROC SEWRPC program.
Indpendent hoizontal
SEWRPC collected 57 independent horizontal check points as part of the quality control process. Results: 0.266' RMSE against a 0.710' RMSE specification resulting in a tested horizontal accuracy of 0.461' at the 95% confidence level for well defined locations.
Ground control consisted of photo identifiable surveyed points. The imagery was collected using a Microsoft Vexcel UltraCam Eagle M2 and M3 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 2015 and 2017. The imagery was mosaicked using manual seamlines generation and tone/color balanced to a project-wide consistency. Custom SEWRPC named 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.
2020-12-08
2
206106
0.250000
191941
0.250000
1
0
2413635.000000 343421.000000
2413635.000000 394947.500000
2461620.250000 394947.500000
2461620.250000 343421.000000
2437627.625000 369184.250000
EPSG
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Band_1
255.000000
0.000000
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Band_2
255.000000
0.000000
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Band_3
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0.000000
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Band_4
254.000000
0.000000
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