20201124
15272900
1.0
FALSE
CreateMosaicDataset D:\Orthos\Orthos_2012\OrthosTC2012.gdb Mosaic2012 "PROJCS['NAD_1983_StatePlane_Michigan_South_FIPS_2113_Feet_Intl',GEOGCS['GCS_North_American_1983',DATUM['D_North_American_1983',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]],PROJECTION['Lambert_Conformal_Conic'],PARAMETER['False_Easting',13123359.58005249],PARAMETER['False_Northing',0.0],PARAMETER['Central_Meridian',-84.36666666666666],PARAMETER['Standard_Parallel_1',42.1],PARAMETER['Standard_Parallel_2',43.66666666666666],PARAMETER['Latitude_Of_Origin',41.5],UNIT['Foot',0.3048]];-107138600 -97193800 3048;-100000 10000;-100000 10000;3.28083989501312E-03;0.001;0.001;IsHighPrecision" # # NONE #
DefineOverviews \\giscache1p\Orthos\Orthos_2012\OrthosTC2012.gdb\Mosaic2012 \\giscache1p\Orthos\Orthos_2012\OrthosTC2012.Overviews\Mosaic2012.Overviews # "13300997.8661417 337700.873031497 13475997.8661417 512700.873031497" # # 5120 5120 3 NO_FORCE_OVERVIEW_TILES BILINEAR JPEG 80
BuildOverviews \\giscache1p\Orthos\Orthos_2012\OrthosTC2012.gdb\Mosaic2012 # DEFINE_MISSING_TILES GENERATE_OVERVIEWS GENERATE_MISSING_IMAGES REGENERATE_STALE_IMAGES
Mosaic2012
file://\\gisfs1p\Orthos\Orthos_2012\OrthosTC2012.gdb
Local Area Network
13300997.866087
13475997.866087
337700.873132
512700.873132
1
Projected
GCS_North_American_1983
Linear Unit: Foot (0.304800)
NAD_1983_StatePlane_Michigan_South_FIPS_2113_Feet_Intl
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Name,MinPS,MaxPS,LowPS,HighPS,Tag,GroupName,ProductName,CenterX,CenterY,ZOrder,Shape_Length,Shape_Area,Year
72900
1
1458
0
20210312
15103700
20210312
15103700
David Johnson
Vexcel, A Microsoft Company
Program Manager, Imagery Partnership Program
303-415-6031
5775 Flatiron Pkwy, Suite 220
Boulder
CO
80301
United States of America
davijohn@microsoft.com
ArcGIS Metadata
1.0
Erick Phillips
Oakland County One Stop Shop
Supervisor
248.858.4070
248.858.1080
2100 Pontiac Lake Rd, Bldg 41W
Waterford
MI
48328-0412
United States of America
phillipse@oakgov.com
9:00 a.m. to 4:00 p.m.
Varies by data type and agent.
Contact Erick Phillips of the One Stop Shop by phone.
24 hrs.
Shapefiles, .tiff and MrSID
2012-01-01
Premier Geospatial, Inc., a XeDAR Company
remote-sensing image
Oakland County, MI
EnterpriseOrthoTC2012ImageService
Under contract with the State of Michigan, Vexcel was contracted to produce and deliver natural Color (RGB) orthophotos for numerous areas of interest in support of Michigan's Statewide Partnership Program. Areas of interest were defined by the State. All aerial imagery was acquired using ADS direct digital sensors at an altitude sufficient for the production of digital orthophotos with a 1.0-foot or .5-foot pixel resolution as requested. Following acquisition of imagery data, survey ground control coordinates were used in-conjunction with Airborne GPS and Inertial Measurement Unit (IMU) information to establish precise spatial positioning of the image data through the process of Analytical Aero-Triangulation (AT). Upon completion of AT, the imagery was rectified to the best available digital elevation model (DEM), whether from the USGS, other high quality DEM provided by the participating government in GeoTIFF or other compatible format, or new ADS stereo imagery compiled and edited surface model using Pictovera software. The resultant rectified imagery was analyzed and radiometrically adjusted to provide the state with optimal color and tonal appearance. Manually-placed seamlines were generated to mosaic imagery from adjacent flightlines. Following mosaicking and color-balancing, multiple QA/QC processes were performed to insure optimal data quality was achieved prior to tiling the data to 5,000 by 5,000 pixel extents. All ortho tiles were clipped to an AOI shapefile (buffered to 400-meters) boundaries, as supplied by the State of Michigan. Final ortho tiles were delivered in the requested projection/units and in GeoTIFF format.
Under contract with the State of Michigan, Vexcel was contracted to produce and deliver natural Color (RGB) orthophotos for numerous areas of interest in support of Michigan's Statewide Partnership Program. Areas of interest were defined by the State. All aerial imagery was acquired using ADS direct digital sensors at an altitude sufficient for the production of digital orthophotos with a 1.0-foot or .5-foot pixel resolution as requested. Following acquisition of imagery data, survey ground control coordinates were used in-conjunction with Airborne GPS and Inertial Measurement Unit (IMU) information to establish precise spatial positioning of the image data through the process of Analytical Aero-Triangulation (AT). Upon completion of AT, the imagery was rectified to the best available digital elevation model (DEM), whether from the USGS, other high quality DEM provided by the participating government in GeoTIFF or other compatible format, or new ADS stereo imagery compiled and edited surface model using Pictovera software. The resultant rectified imagery was analyzed and radiometrically adjusted to provide the state with optimal color and tonal appearance. Manually-placed seamlines were generated to mosaic imagery from adjacent flightlines. Following mosaicking and color-balancing, multiple QA/QC processes were performed to insure optimal data quality was achieved prior to tiling the data to 5,000 by 5,000 pixel extents. All ortho tiles were clipped to an AOI shapefile (buffered to 400-meters) boundaries, as supplied by the State of Michigan. Final ortho tiles were delivered in the requested projection/units and in GeoTIFF format.
Anita Campbell
Oakland County Application Services
GIS Data Services Supervisor
248.858.2388
248.452.9128
1200 N Telegraph Rd, Bldg 49W
Pontiac
MI
48341
United States of America
campbella@oakgov.com
8:30 a.m. to 5:00 p.m. EST
Michigan
State
Oakland
County
orthophoto
aerial imagery
ortho
orthoimagery
digital orthoimagery
Oakland
Michigan
orthophoto
aerial imagery
ortho
orthoimagery
digital orthoimagery
http://www.oakgov.com/it/gis/Documents/EnhancedAccessPolicy.pdf
http://www.oakgov.com/it/gis/Documents/GISDataPolicies.pdf
Oakland County, MI
2012-01-01
Premier Geospatial, Inc., a XeDAR Company
Oakland County, MI
Oakland County, MI
2012-01-01
Premier Geospatial, Inc., a XeDAR Company
ground condition
2012-03-17
2012-03-14
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595
1
-83.708712
-83.050476
42.904948
42.419154
Compliance with the accuracy standard was ensured by the placement of GPS ground control on photo identifiable ground points during the acquisition of aerial imagery. The following checks were performed: 1. The ground control and airborne GPS/IMU data stream were validated through an aerotriangulation bundle adjustment using Pictovera software. 2. Digital orthophotography was validated through a visual inspection of control points, edge matching and general image quality. The following methods were used to ensure image quality: 1. Use of targeted ground control during image acquisition. 2. Use of GPS/IMU during image acquisition. 3. Checking of controls against ortho product. 4. Post ortho accuracy approval checks for overall image quality (tone, color balance, etc.).
One foot RGB orthoimagery covers approximately 944 sqaure miles in Oakland County, Michigan.
This image complies with National Map Accuracy Standards. It has been tested at 90% confidence level to have an RMS positional displacement within 6.6 feet of well defined ground features. Does not apply to vertical surface features, such as structures, appearing in the digital orthophotography due to inherent lean, or to above ground features such as pipelines, bridge decks, and powerlines.
+/- 6.6 feet RMSE
There is no vertical accuracy for orthoimagery.
The imagery was collected using Leica ADS digital sensors, which have a 62 millimeter focal length. Collection was performed using a combination of twin-engine aircraft flying at an average flying height of 9,800 feet above mean terrain with 30% sidelap, giving the collected data nominal ground sampling distance of 1foot. Based - upon the CCD Array configuration present in the ADS40 digital sensor, imagery for each flight line is 12,000 pixels in width. Red, Green, Blue, Infrared and Panchromatic image bands were collected.
Premier Geospatial, Inc., a XeDAR Company
303-302-8600
303-302-8601
15000 W. 64th Ave.
Arvada
CO
80007
United States of America
8:00 AM - 5:00 PM MT, M-F
None
IMG
Imagery and GPS/IMU data was downloaded from mass memory unit (MMU) on the aircraft to external hard drive on the ground. GPS/IMU mission data was processed together with simultaneously collected ground-based GPS base station data in forward and reverse directions. This precisely determined the aerial camera's position and orientation in the terrain (project) coordinate system and allowed for correct orientation of the imagery.
Premier Geospatial, Inc., a XeDAR Company
303-302-8600
303-302-8601
15000 W. 64th Ave.
Arvada
CO
80007
United States of America
8:00 AM - 5:00 PM MT, M-F
IMG
IMG
Once rectified, the orthoimagery was mosaicked using manual seamline generation in OrthoVista Seam Editor (OVSE). The 12 bit data range was adjusted for display in standard eight bit image channels by defining a piecewise histogram stretch using OrthoVista software. A constant stretch was defined for each image collection period, and then strip by strip adjustments were made as needed to account for changes in sun angle and azimuth during the collection period. Using OrthoVista software, the imagery was mosaicked and tiled to the customer specified tile extents, 5000 pixels by 5000 pixels tiles. These went through an extensive QA/QC process to ensure customer specifications were met.
2012-01-01
Premier Geospatial, Inc., a XeDAR Company
303-302-8600
303-302-8601
15000 W. 64th Ave.
Arvada
Colorado
80007
United States of America
Aerotriangulation blocks were defined primarily by order of acquisition and consisted of four to seventeen imagery strips. Image tie points providing the observations for the least squares bundle adjustment were selected from the images using an autocorrelation algorithm. Photogrammetric control points consisted of photo identifiable control points, collected using GPS field survey techniques. The control points were loaded into a softcopy workstation and measured in the acquired image strips. A least squares bundle adjustment of image pass points, control points and the ABGPS was performed to develop an aerotriangulation solution for each block using Pictovera software. Upon final bundle adjustment, the triangulated strips were ortho-rectified to a newly auto-correlated DEM.
2012-01-01
Premier Geospatial, Inc., a XeDAR Company
303-302-8600
303-302-8601
15000 W. 64th Ave.
Arvada
CO
80007
United States of America
8:00 AM - 5:00 PM MT, M-F
IMG, CONT, DEM
None
Ground survey control points were established for the dual-purpose of providing densification of the AirborneGPS/IMU information for AT purposes, as well as validation of the final orthophoto accuracy. Control points were established throughout each project area using Real-time Kinematic GPS methods, using Trimble R8 hardware. Corrections derived from the Michigan Department of Transportation CORS network (all but 4 points). Corrections derived from NGS OPUS (remaining 4 points) using minimum 20 minutes of continuous collection. All coordinate values (X,Y,Z) were transformed from NAD83-CORS96 (the datum used for correction) to WGS84-1150 using the Horizontal Time-Dependent Positioning software program (HTDP) available from the National Geodetic Survey (NGS) Geodetic Toolkit. The epoch used for the input (NAD83-CORS96) was Jan. 1, 2002. The epoch used for the output (WGS84-1150) was Jan. 1, 2001.
2012-04-05
Robert Goodwin
RS&GIS - MSU
GISP
517-432-0879
213 Geography Bldg.
East Lansing
Michigan
48824
United States of America
goodwinr@msu.edu
None
CONT
Pixxures generated an elevation model through auto-correlation processes. Upon completion of the Aero-Triangulation (AT), PictoVera software was used to automatically correlate a dense elevation network of x, y, z (3D) points from the stereo-viewable imagery from each flight line. With a general density of approximately one point per every 1 -2 meters, the 3-D points were reviewed and manually edited for gross errors. Additional filtering was performed to remove points that were found to have been extracted from the surfaces of elevated buildings and trees, using SimActive DEM filtering software. Upon final filtering, the resulting DEM was suitable for the accurate rectification of the aerial imagery.
2012-01-01
Premier Geospatial, Inc., a XeDAR Company
303-302-8600
303-302-8601
15000 W. 64th Ave
Arvada
Colorado
80007
United States of America
The DEM was comprised of a new autcorrelated surface
Digital Elevation Model
DEM
1.0
Premier Geosptial, Inc., a XeDAR Company
raster digital data
Digital Elevation Model
ground condition
2012-01-01
Geodetic ground control was used to create a digital control file and control report as well as QC check of ortho accuracy. Predefined points within the county were targeted and photo-identifiable locations were measured. These points along with their precise coordinates were used in the AT process and to check the horizontal accuracy of the resulting orthophotos.
Ground Control Survey
CONT
2012-04-05
1.0
Remote Sensing & GIS Research and Outreach Services - Michigan State University
vector digital data
Ground Control
ground condition
2012-04-05
New digital, color aerial imagery of the site was acquired using Leica ADS Digital Sensor. Airborne GPS/IMU data was recorded at the time of all imagery acquisition.
0
Aerial Imagery
IMG
1.0
Premier Geospatial, Inc., a XeDAR Company
remote-sensing image
Aerial Imagery
ground condition
2012-03-14
2012-03-17
2
175000
1.000000
175000
1.000000
1
1
0
13300997.866087 337700.873132
13300997.866087 512700.873132
13475997.866087 512700.873132
13475997.866087 337700.873132
13388497.866087 425200.873132
Color orthophotos are comprised of pixels. Each pixel is assigned a value of 0 to 255. That number will refer to a color look-up table which contains red, green and blue (RGB) values, each from 0 to 255, for that pixel within the image.
None
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
20210312