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18273800
1.0
FGDC CSDGM Metadata
FALSE
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PtHope_NAD83.sid
002
423111.675000
439112.475000
7579035.675000
7586036.025000
1
Projected
GCS_NAD_1983_2011
Linear Unit: Meter (1.000000)
NAD_1983_2011_UTM_Zone_3N
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20200219
10314400
ItemDescription
Quantum Spatial, Inc.
Orthophoto Technician
907-272-4495
907-274-3265
2014 Merrill Field Drive
Anchorage
Alaska
99501
US
alaska@quantumspatial.com
8am to 5pm Alaska Time
20200219
ArcGIS Metadata
1.0
Quantum Spatial, Inc.
Project Manager
907-272-4495
907-274-3265
2014 Merrill Field Drive
Anchorage
Alaska
99501
US
alaska@quantumspatial.com
8am to 5pm Alaska Time
Contact distributor for information
MrSID
MG46
compression applied
Raster Dataset
PtHope_NAD83.sid
2019-10-31
Quantum Spatial, Inc.
Quantum Spatial, Inc.
Anchorage, Alaska, USA
remote-sensing image
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Digital Orthomosaic of the Point Hope area based on aerial photography with a pixel ground resolution of 0.075 m.</SPAN></P><P STYLE="font-size:16ptmargin:7 0 7 0;"><SPAN>Digital Orthomosaic of the Point Hope area based on Aug. 17, 2019 aerial photography with a pixel ground resolution of 0.3".</SPAN></P><P><SPAN /></P></DIV></DIV>
Provide visual backdrop for vector data
Quantum Spatial, Inc.
Project Manager
907 272-4495
907 274-3265
2014 Merrill Field Dr.
Anchorage
Alaska
99501
US
alaska@quantumspatial.com
8am - 5pm Alaska Time, M-F
Point Hope
US
Alaska
August 2019
Orthophoto
Orthomosaic
Orthophoto
Orthomosaic
Point Hope
US
August 2019
Alaska
Although these data have been processed successfully on a computer system at Quantum Spatial, no warranty expressed or implied is made by Quantum Spatial regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Quantum Spatial shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results.
Restricted to Client
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>Restricted to Client</SPAN></P></DIV></DIV>
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.0.10450
-151.035933
-151.008564
70.25092
70.260173
Quantum Spatial Job # 33569
1
-166.869905
-166.476874
68.380651
68.313997
Restricted to Client
Restricted to Client
The file was loaded into ArcMap 10.0 to ensure proper tile size, location, and alignment.
This file covers the area of interest in its entirety.
34 check point coordinates were measured to compare the aerotriangulated value of the points to their observed position in the mosaic to ensure the data meets horizontal accuracy requirement.
Average of the sum of the mosaic observed positions versus the aerotriangulated and surveyed locations.
0.029 m RMSE
This data provided the coordinates for aerotriangulation refinement of the initial photo exposure positions and horizontal accuracy checks for the final tiles.
Ground Control
Surveyed Photo-Identifiable Ground Control
Umiaq Design and Municipal Services LLC
document
Provided the initial X, Y, and Z location for each exposure.
GPS Data
GPS Position Data
Quantum Spatial, Inc.
tabular digital data
Provided the initial aircraft attitude/orientation for each exposure.
IMU Data
IMU Orientation Data
Quantum Spatial, Inc.
tabular digital data
This photography provided the base imagery required to create the orthophotos.
16800
Aerial Photography
Aerial Photography
Quantum Spatial, Inc.
remote-sensing image
The DEM was used in the construction of the orthomosaic to correct for terrain distortion.
Vector Digital Elevation Data
LiDAR DEM
Quantum Spatial, Inc.
Quantum Spatial, Inc.
Anchorage, AK
tabular digital data
Aerotriangulation Process: The aerotriangulation was performed using the initial GPS/IMU data and was refined using conventional photogrammetric methods.
2019-08-17
IMU Orientation Data
Aerial Photography
GPS Position Data
Surveyed Photo-Identifiable Ground Control Data
Aerial Camera Calibration Report
Aerotriangulation Report
Aerial Photography Capture: A twin-engine aircraft with an on-board Intergraph frame-based digital mapping camera (DMC) was used to capture individual frames of imagery. The position and orientation of the aircraft was recorded at each exposure with the on-board global positioning system (GPS) and inertial measuring unit (IMU).
2019-08-17
Flight Plan
Aerial Photography
GPS Position Data
IMU Orientation Data
DEM Process: Existing LiDAR data was evaluated and updated photogrammetrically to eliminate all returns not classified as ground.
2019-08-17
LiDAR Flight Plan
Vector Digital Elevation Data
Orthorectification Process: Inpho OrthoMaster software was used to process the imagery to remove systematic and terrain distortions while also georeferencing it. The resulting output files were output with a ground sample distance (GSD) of 0.075 m.
2019-09-10
Vector Digital Elevation Data
Aerial Photography
Aerotriangulation Report
Digital Orthorectified Aerial Photography
Mosaic Process: Inpho OrthoVista software was used to color-balance, automatically generate seamlines, and mosaic the individual orthophotos into user defined mosaic tiles.
2019-09-25
Digital Orthorectified Aerial Photography
Initial Orthorectified Mosaic Tiles
Tile Review: The mosaicked tiles were each individually panned through and errors/blemishes in seamline generation and color balance are removed by manual methods. This data set was also compared to imagery previously collected, processed, and delivered to the client in order to shift the overall color cast of the current imagery to better resemble the legacy data.
2019-10-15
Initial Orthorectified Mosaic Tiles
Reviewed Orthorectified Mosaic Tiles
Header Creation and Horizontal Checks: The mosaic tiles have their georeferencing information assigned into the headers of the tiles creating full geotiffs. The tiles are then checked for horizontal positioning utilizing ground control.
2019-10-25
Vector Digital Elevation Data
Surveyed Photo-Identifiable Ground Control Data
Reviewed Orthorectified Mosaic Tiles
Final Orthorectified Mosaic Tiles
2
93338
0.075000
213344
0.075000
1
0
423111.675000 7579035.675000
423111.675000 7586036.025000
439112.475000 7586036.025000
439112.475000 7579035.675000
431112.075000 7582535.850000
The orthomosaic is a 4-band image.
This data consists of four bands of information with data values ranging from 0-255 with 0 being black and 255 for white. When 3 of the 4 bands is assigned to the appropriate colors of red, green, and blue, the pixel value shall determine the brightness of that particular color with the combination of the three providing the designated color image for the chosen band combination.
dataset
EPSG
8.2.2(10.2.1)
Band_1
194.000000
0.000000
8
Band_2
190.000000
0.000000
8
Band_3
182.000000
0.000000
8
Band_4
209.000000
0.000000
8
Band_5
255.000000
0.000000
8