49490
Horry County South Carolina Orthophotography
2010_usgs_horry
Data Set
Published / External
49403
Imagery - partner (no harvest)
Project
Completed
2011-05-26
Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophoto is a 15cm GSD resolution with tiles measuring 1500 x 1500 meters cast on the Universal Transverse Mercator Zone 17N on the North American Datum of 1983 (NAD83/2007). The aerial photography used to create the digital images was acquired between February 16th and March 8th, 2010.
The orthophotography was created for use by the USGS, and Horry County South Carolina.
11936
Theme
ISO 19115 Topic Category
imageryBaseMapsEarthCover
Theme
3 band orthophoto
Theme
Remotely Sensed Imagery/Photography
Theme
image map
Theme
orthoimage
Theme
orthophoto
Theme
rectified image
Theme
rectified photograph
Spatial
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
SC
Spatial
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
US
Office for Coastal Management
Charleston
SC
Data Set
Unknown
remote sensing image
Users must assume responsibility to determine the usability of these data. These photographs were obtained for use by NGS during the course of its development of potential final products to fulfill its statutory mission. Although NGS is making these photographs available to others who may find the photographs of value, NGS does not warrant, endorse, or recommend the use of these photographs for any given purpose. NGS is providing these photographs "as is," and NGS disclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will NGS be liable to you or any third party for any direct, indirect, incidental, consequential, special, or exemplary damages or lost profits resulting from any use or misuse of these data.
Fugro Earthdata, Inc.
Data Steward
2011-05-26
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Distributor
2011-05-26
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Metadata Contact
2011-05-26
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Point of Contact
2011-05-26
Organization
NOAA Office for Coastal Management
NOAA/OCM
coastal.info@noaa.gov
2234 South Hobson Ave
Charleston
SC
29405-2413
(843) 740-1202
https://coast.noaa.gov
NOAA Office for Coastal Management Home Page
Online Resource
Ground Condition
-79.317294806
-78.524434796
34.30798878
33.57605894
Discrete
2010
Unclassified
All orthophotography is the property of the USGS and Horry County
Orthophotography is the property of the USGS, and Horry County, SC. Orthophotography is the intellectual property of the USGS, and Horry County, SC.
https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=443
Customized Download
Create custom data files by choosing area, map projection, file format, etc.
https://coast.noaa.gov/digitalcoast
Downloadable Data
GeoTIFF
GeoTIFF
https://coastalimagery.blob.core.windows.net/digitalcoast/HorrySC_2010_443/index.html
Bulk Download
Simple download of data files.
https://coast.noaa.gov/digitalcoast
Online Resource
2016-05-23
Date that the source FGDC record was last modified.
2017-11-14
Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.
2018-02-08
Partial upload of Positional Accuracy fields only.
2018-03-13
Partial upload to move data access links to Distribution Info.
The following software is used for validation of the imagery and surface modeling 1. Aerotriangulation - Pendulum Software 2. Digital Orthophotography - Pendulum Software 3. Bentley - MicroStation 4. Pixel Factory 5. ZI - OrthoPro 6. ESRI - ArcInfo 7. ERDAS Imagine 8. TerraScan 9. Earthdata Proprietary software 10. Adobe - Photoshop
The orthophotos were created to be fully compliant with a horizontal positional accuracy shall not exceed 1 meter tested to NSSDA Standards (95% confidence).
The orthophotos were created to be fully compliant with a horizontal positional accuracy shall not exceed 1 meter tested to NSSDA Standards (95% confidence).
The following methods are used to assure imagery accuracy. 1. Use of ground control network utilizing GPS techniques. 2. Use of airborne GPS (global positioning system) inconjunction with the acquisition of imagery. The following software is used for validation of the imagery and surface modeling. 3. Aerotriangulation - Pendulum Software 4. Digital Orthophotography - Pendulum Software, Pixel Factory and Photoshop. 5. Bentley - MicroStation 6. Pixel Factory 7. ESRI - ArcGIS 8. Earthdata proprietary software 9. Adobe - Photoshop
Compliance with the accuracy standard was ensured by the collection of photo identifiable GPS ground control after the acquisition of aerial imagery. The following checks were performed. 1. The ground control and airborne GPS data stream were validated through a fully analytical bundle aerotriangulation adjustment. The RMSE is less than 1, 10,000th of the flying height. 2. The lidar data were checked against the project control. The technician visited and confirmed the accuracy of the points during initial processing. 3. Digital orthophotography was validated through an inspection of edge matching and visual inspection for image quality.
Ground Control
2010-01-01
Range
2010-02-01
2010-02-15
TerraSurv was contracted by the Fugro EarthData to acquire 16 ground control points during the acquisition of aerial imagery. The ground control points were established using GPS for vertical and horizontal coordinate values. NAD83(NSRS2007)South Carolina Stateplane NAVD 88 International Feet. | Type of Source Media: external hard drive
Lidar Surface
2006-01-01
Discrete
2006
In 2006 Sanborn flew lidar data over Horry County South Carolina. The data produced from that project was utilized as the surface for orthorectification. | Type of Source Media: external hard drive
South Carolina raw PanoramiX data
2010-01-01
Discrete
2010
1200
The aerial imagery acquisition for Horry County was flown to support the creation of digital orthophotography with a 15cm pixel. The imagery was acquired on February 16th, 17th, 18th, 19th, 20th, 21st, 26th, March 5th, 6th, and 8th, 2010. There were fourteen sorties and 104 flight lines. All imagery was collected using the PanoramiX digital sensor. | Type of Source Media: not made available
1
The Digital Orthoimagery is comprised of 8 bit color imagery captured by the PanoramiX camera. Using the Preprocessor software, data was unpacked and indexed. A QA/QC process was performed to ensure integrity of the raw data. An automated radiometric calibration was performed as an initial adjustment to aid in creating consistent imagery. GPS data captured during flight was processed and integrated into the project, after which a block solution was calculated in the Dataviewer software. A QA/QC process was performed on this solution to identify any anomalies. This was done by reconstructing various points in the solution. Ground Control was imported into the Dataviewer software and measured in order to refine the solution. The surface model from the 2009 Horry County project, with some updated areas, was imported into the Dataviewer software. The imagery was then rectified for each flight line using the refined block solution and the imported surface model. A QA/QC process was performed to check for any rectification errors. The rectified imagery was exported from the Dataviewer software along with a reduced resolution mosaic, or Quicklook, of each of these imagery strips. The quicklooks were radiometrically adjusted using Earthdata Proprietry software and then imported into the Pixel Factory software along with the full resolution mosaic flight lines. The histogram from the quicklook was applied to the full resolution imagery. Mosaic lines were placed, joining the imagery strips. In initial QA/QC was performed by the technician to ensure that the mosaic lines were appropriately placed and that there was appropriate imagery coverage. The final imagery data set was removed from the Pixel Factory environment in a process called "packaging" where the individual tiles are created. The created tiles are reviewed again for anomalies and interactive radiometric adjustment applied where needed. QA/QC was performed looking for anomalies, smears and other indications of problems within the digital orthophoto creation process, interactive radiometric adjustment applied where needed. Two additional radiometric adjustments are applied to the completed orthos in Adobe Photoshop. The first is a sharpening mask filter; this filter is used to help increase sharpness of a digital image. The basis for this filter is to locate pixels that differ in value from surrounding pixels by the threshold specified. It then increases the pixels contrast by the value identified. For neighboring pixels specified by the threshold, the lighter pixels get even lighter and the darker pixels get even darker based on the specified amount. The changes made maintained the integrity of the original histogram curve. The imagery is then Projected to the appropriate co-ordinate system and recut to the tiling scheme required for delivery. The final digital ortho product was GEOTIFF files. All data was delivered on external hard drives.
2010-10-01T00:00:00
gov.noaa.nmfs.inport:49490
Anne Ball
2017-11-15T15:15:07
Kirk Waters
2024-01-11T11:54:09
2024-01-11
OCM Partners
OCMP
1002
Public
No
2018-03-13
1 Year
2019-03-13