gov.noaa.nmfs.inport:49496
eng
UTF8
dataset
OCM Partners
resourceProvider
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
2
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2012 Multispectral Color Orthophotography at .30m GSD, UTM z2S projection, GeoTIFF file format for American Samoa.
2012_american_samoa
publication
NOAA/NMFS/EDM
49496
https://www.fisheries.noaa.gov/inport/item/49496
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
imageDigital
The 2012 American Samoa aerial photography project produced 1' (.30m) GSD multispectral digital orthoimagery for approximately 85 square miles of the American Samoa islands of Tutuila, Aunu'u, Ofu, Olosega, and Ta'u. An orthoimage is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed, thus it combines the image characteristics of a photograph with the geometric qualities of a map.
Original contact information:
Contact Name: Mike Duncan
Contact Org: United States Geological Survey
Phone: 573-308-3579
Email: e-mail: jduncan@usgs.gov
The digital orthoimagery is both high resolution and spatially accurate, and can serve as a raster base image for mapping projects as well as a data source to support the derivation of new raster and vector data sets.
Orthophotos were produced for USGS by Photo Science under the USGS Geospatial Production and Services Contract, Contract Number G10PC00026, Task Order G12PD00480.
completed
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
pointOfContact
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
custodian
unknown
AS
place
U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard (FIPS) 5-2): Washington, D.C., National
US
place
U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Techno
image map
natural color orthophoto
orthoimage
orthophoto
rectified image
rectified photograph
theme
American Samoa
Aunu'u
Ofu
Olosega
Ta'u
Tutuila
place
Imagery - partner (no harvest)
project
InPort
otherRestrictions
Cite As: OCM Partners, [Date of Access]: 2012 Multispectral Color Orthophotography at .30m GSD, UTM z2S projection, GeoTIFF file format for American Samoa. [Data Date Range], https://www.fisheries.noaa.gov/inport/item/49496.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: None
otherRestrictions
Use Constraints: The United States Geological Survey shall not be held liable for any errors in this data. This includes errors of omission, errors of commission, content errors, and relative and positional accuracy errors in the data. This data should not be construed to be a legal document. Primary sources from which this data was compiled must be consulted for verification of information contained in this data. This data is in the public domain, and may not be resold.
otherRestrictions
Distribution Liability: Woolpert prepared the original data as set forth in the Scope of Services, in accordance with reasonable care and due diligence as set forth in this Agreement, however, due to the easily alterable nature of electronic media, files, documents, and other deliverables, Woolpert, Inc. makes no warranties, either expressed or implied, with respect to the accuracy, completeness, merchantability, or fitness for any particular purpose, including, but not limited to, use of any/all data as described within this metadata file, by any user of this data. Any use will be at the end-user's sole risk.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
49496
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocmp/dmp/pdf/49496.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
grid
eng; US
imageryBaseMapsEarthCover
-170.851644
-169.405585
-14.382132
-14.147592
| Currentness: Ground Condition
2012-08-02
2012-08-03
Digital aerial imagery was obtained in August 2012 using a large format Microsoft Vexcel Ultracam, equipped with Airborne GPS/IMU. A total of three areas consisting of 26 flight lines with 671 frames were acquired under a single task order, in multispectral (RGB and NIR) 8 bits per band format. The imagery was acquired with a 100.5 mm focal length at an altitude of 9,000' above mean terrain, to yield a raw pixel resolution of 1' (.30m) suitable for photogrammetric mapping and orthophoto production. The 'leaf condition' was not a concern but imagery was collected in the summer of 2012 under conditions free from flooding and excessive soil moisture. Within populated areas, no more than 5% clouds, cloud shadows, smoke, and haze are permitted. In the uninhabited areas of the islands 10% of clouds, cloud shadows, smoke, and haze may exist. There is no tide coordination. The sun angle threshold was 30 degrees. The imagery consisted of panchromatic, blue, green, red and near infrared bands. The three color bands and near infrared bands were pan sharpened and archived as frame imagery. All 4 bands were used in the orthophoto production. The two mission baseline information are as follows: August 2, 2012 minimum baseline length is 0.476km; maximum baseline length is 32.432km; and mean baseline length is 12.358km. August 3, 2012 minimum baseline length is 0.022km; maximum baseline length is 40.399km; and mean baseline length is 14.860km.
false
eng
false
None
Uncompressed
GeoTIFF
Uncompressed
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
distributor
https://coast.noaa.gov/dataviewer/#/imagery/search/where:id=1417/details/1417
WWW:LINK-1.0-http--link
https://coast.noaa.gov/dataviewer/#/imagery/search/where:id=1417/details/1417
custom download app
download
https://coastalimagery.blob.core.windows.net/digitalcoast/American_Samoa_2012_1417/index.html
WWW:LINK-1.0-http--link
https://coastalimagery.blob.core.windows.net/digitalcoast/American_Samoa_2012_1417/index.html
data files
download
dataset
Accuracy
Radiometry was verified by visual inspection of the digital orthophotos. Slight systematic radiometric differences may exist between adjacent orthoimage files; these are due primarily to differences in source image capture dates and sun angles along flight lines. These differences can be observed in an image's general lightness or darkness when it is compared to adjacent orthoimage file coverages. Tonal balancing was performed over a group of images during the mosaicking process in order to lighten or darken adjacent images for better color tone matching.
Horizontal Positional Accuracy
This 0.30m Ground Sample Distance (GSD) digital ortho imagery was compiled to meet a 1.52 meter (5') horizontal accuracy at 95% confidence level(0.88-meters Root Mean Squared (RMSE) Error XY (0.62 meter RMSE X or Y) based on NSSDA testing guidelines. This accuracy requirement is not applicable in areas where the ground is obscured on the aerial imagery by foliage, prevalent smoke, or dense shadow.; Quantitative Value: 0.709 meters, Test that produced the value: RMSE at CE95 in meters. Please see Accuracy Analyst report.
Vertical Positional Accuracy
There is no vertical component for orthophotos.
Completeness Report
The 'leaf condition' was not a concern but imagery was collected in the summer of 2012 under conditions free from flooding and excessive soil moisture. Within populated areas, no more than 5% clouds, cloud shadows, smoke, and haze are permitted. In the uninhabited areas of the islands 10% of clouds, cloud shadows, smoke, and haze may exist. There is no tide coordination. The sun angle threshold was 30 degrees. To ensure complete coverage, photography was collected for all tiles that intersected the islands of American Samoa (Tutuila, Aunnu'u, Ofu, Olosega, and Ta'u). Orthoimages were visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images.
Conceptual Consistency
All GeoTIFF tagged data and image file sizes were validated using commercial GIS software to ensure proper loading before being archived. This validation procedure ensured correct physical format and field values for tagged elements. Seam lines and tile edges were visually inspected.
Sixty-five (65) photo identifiable control locations were selected and surveyed to adequately cover the entire state. Details of each point can be found in the full control report. Accuracies of 10cm or better (horizontally and vertically) were required. | Source Produced: Georeferenced Aerial Imagery
2012-01-01T00:00:00
New digital aerial imagery was obtained in the spring of 2012 using a large format Microsoft Vexcel Ultracam equipped with Airborne GPS/IMU. A total of 22 flight lines with 671 frames were collected in multispectral (RGB and NIR) 12 bits per band format. The imagery was acquired with a 100.5 mm focal length at an altitude of 9,000' above mean terrain, to yield a raw pixel resolution of 1' (.30 m) suitable for photogrammetric mapping and orthophoto production. The 'leaf condition' was not a concern but imagery was collected in the summer of 2012 under conditions free from flooding and excessive soil moisture. Within populated areas, no more than 5% clouds, cloud shadows, smoke, and haze are permitted. In the uninhabited areas of the islands 10% of clouds, cloud shadows, smoke, and haze may exist. There is no tide coordination. The sun angle threshold was 30 degrees. To ensure complete coverage, photography was collected for all tiles that intersected the islands of American Samoa (Tutuila, Aunnu'u, Ofu, Olosega, and Ta'u). Orthoimages were visually inspected for completeness to ensure that no gaps or image misplacements exist within and between adjacent images. | Source Produced: Raw Aerial Imagery
2012-01-01T00:00:00
Imagery and AGPS/IMU data is downloaded from the hard drive on the plane to the hard drive on the ground. AGPS/IMU mission data is processed together with continuously collected ground-based CORS GPS base station data in forward and reverse directions. This precisely determines the aerial camera's position and orientation in the terrain (project) coordinate system and allows for correct orientation of the imagery. | Source Produced: Exterior Orientation File
2012-01-01T00:00:00
The EOFILE, raw frames, and control points were input into ISAT in order to complete the SoftCopy Aerotriangulation, described in ATSOL source contribution, and assembled into a block. A second degree block adjustment is run along with the full least squares bundle adjustment. Once the last set of blunders and adjustments are complete, a final block bundle adjustment is run to produce the final solution. The final adjustment of the block is accomplished by using a rigorous simultaneous least squares bundle adjustment. The general procedure is to remove all blunders from the data using automatic blunder detection. The bundle adjustment is then run with minimal ground control to test the photogrammetric measurements for consistency. Next, the full ground control data set, including ABGPS data, is added to the adjustment. The horizontal control is then tightened and the effect on the vertical control and the photogrammetric residuals are inspected. The final adjustment makes sure that all of the measurements are in balance with each other and properly represent the actual conditions. | Source Produced: Stereo Imagery
2012-01-01T00:00:00
The rectification process required as input a digital elevation model (LiDAR_DEM), imagery (IMG1) and soft copy aerotriangulation solution (ATSOL). The orthorectified imagery was produced using Intergraph Orthopro software. It used ImageStation Photogrammetric Manager (ISPM) for photogrammetry project setup, file management, and importing triangulation data from a user defined ASCII file (ATSOL). The ortho project records all the operations, including all the parameters that are defined through the OrthoPro workflow, such as the project area coordinates, pixel size, rotation angle, ISPM project and its unorthorectified source images, product areas (TLDEF) orthorectification settings, seamlines and so on. The results are single frame images that have yet to be mosaicked into manageable tiled orthos. The single frame orthos were checked for accuracy against the surveyed ground control before further image editing.
2012-01-01T00:00:00
Orthorectified imagery was mosaicked, locally color-balanced and cut to the tile definition boundaries (TLDEF) using Intergraph Orthopro software. Tiled orthophotos then went through a rigorous manual QC process to evaluate for remaining hotspots (sun reflectance over water), tone quality, color balance and the feathering area along seamlines. Any imperfections at this point were manually edited. Clouds and cloud shadows were attempted to be minimized by using alternate views from adjoining frames. The tiled images were then converted to the required file format (GeoTIFF) and transferred to external hard drives for delivery to USGS. | Source Produced: Tiled Orthophoto
2012-01-01T00:00:00
Source Contribution: Exterior Orientation (EO) Parameters (x,y,z,omega,phi,kappa) were produced to provide precise photocenter locations for each frame of imagery. The two mission baseline information are as follows: August 2, 2012 minimum baseline length is 0.476km; maximum baseline length is 32.432km; and mean baseline length is 12.358km. August 3, 2012 minimum baseline length is 0.022km; maximum baseline length is 40.399km; and mean baseline length is 14.860km. Aerotriangulation was necessary to achieve the accuracy requirements of the project. | Source Geospatial Form: ASCII Text File | Type of Source Media: disc
Exterior Orientation File
Photo Science
2012
Source Contribution: Targeted ground control was collected for use in the Aerotriangulation process. Sixty-five (65) photo identifiable ground control points were selected and surveyed to adequately cover the entire state. Details of each point can be found in the full control report. | Source Geospatial Form: remote-sensing image | Type of Source Media: External Hard Drive
Georeferenced Aerial Imagery
Photo Science
2012
Source Contribution: Photo Science developed classified, bare earth, .LAS LiDAR data at a 1-meter nominal post spacing with a fundamental 15 cm vertical accuracy at 95% confidence interval. Some areas of Ta'u were missing LiDAR so a stereocompiled DEM was created from the imagery. | Source Geospatial Form: vector digital data | Type of Source Media: External
LiDAR_DEM
Photo Science
2012
Source Contribution: Orthorectified images were geometrically corrected to achieve a uniform scale. Each frame was adjusted for topographic relief, lens distortion and camera tilt. | Source Geospatial Form: remote-sensing image | Type of Source Media: disc, DVD or online
Orthorectified Image
Photo Science
2012
Source Contribution: The digital aerial imagery was obtained using a large format Microsoft Vexcel Ultracam. Aerial imagery was supplemented with the simultaneous acquisition of airborne GPS/IMU data, which captured the ground coordinate for the nadir point of each photograph. Aerial imagery was exposed at an altitude of 9,000' above mean terrain yielding an approximate GSD of 1 foot. A minimum of 70% forward gain and 40% sidelap was collected to ensure full stereo coverage. The aerial images are used in the production of orthophotos. | Source Geospatial Form: remote-sensing image | Type of Source Media: External Hard Drive
Raw Aerial Imagery
Photo Science
2012-08-28
Source Contribution: SoftCopy Aerotriangulation is a computer process of densifying the ground control network from locations in a few of the digital images to numerous points in each digital image that is to be used in the mapping process. This process is dependent on the location and coordinate positions of the ABGPS and GPS photo control points as well as a precise camera calibration for the Microsoft Vexcel Ultracam camera used to capture the images. | Source Geospatial Form: ASCII Report File | Type of Source Media: disc
SoftCopy Aerotriangulation
Photo Science
2012
Source Contribution: The stereoimages are the product of the processed stereo imagery frames and the Aerotriangulation solution. Digital imagery was produced in TIF file format, 4-band, 8-bit stereo pairs. | Source Geospatial Form: remote-sensing image | Type of Source Media: External Hard Drive
Stereo Imagery
Photo Science
2012
Source Contribution: The tile definition was used to cut orthorectified imagery into manageable, usable images in UTM projection. The UTM deliverables defined by this tile definition were modeled after the U.S. National Grid and references NAD83 UTM projection, units of Meters. Each tile is 1500 X 1500 meters. | Source Geospatial Form: vector digital data | Type of Source Media: disc
Tile definition
Photo Science
2012
Source Contribution: The tiled orthophoto was the result of mosaicking orthorectified imagery and using the tile definition to cut the data into manageable, usable orthophotos. 173 ortho tiles for delivery to USGS were created. | Source Geospatial Form: remote-sensing image | Type of Source Media: disc, DVD or online
Tiled Orthophoto
Photo Science
2012
otherRestrictions
otherRestrictions
Access Constraints: None | Use Constraints: None