Slide Menu
Search Help Show/Hide Menu
Short Citation:
OCM Partners, 2023: Horry County South Carolina Orthophotography, https://www.fisheries.noaa.gov/inport/item/49490.

Item Identification

Title: Horry County South Carolina Orthophotography
Short Name: 2010_usgs_horry
Status: Completed
Publication Date: 2011-05-26
Abstract:

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.

Purpose:

The orthophotography was created for use by the USGS, and Horry County South Carolina.

Notes:

11936

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category imageryBaseMapsEarthCover
None 3 band orthophoto
None image map
None orthoimage
None orthophoto
None rectified image
None rectified photograph
None Remotely Sensed Imagery/Photography

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
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
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
None South Carolina

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: Unknown
Data Presentation Form: remote sensing image
Distribution Liability:

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.

Data Set Credit: Fugro Earthdata, Inc.

Support Roles

Data Steward

CC ID: 665483
Date Effective From: 2011-05-26
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 665485
Date Effective From: 2011-05-26
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 665486
Date Effective From: 2011-05-26
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 665484
Date Effective From: 2011-05-26
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 665489
W° Bound: -79.317294806
E° Bound: -78.524434796
N° Bound: 34.30798878
S° Bound: 33.57605894

Extent Group 1 / Time Frame 1

CC ID: 665488
Time Frame Type: Discrete
Start: 2010

Access Information

Security Class: Unclassified
Data Access Constraints:

All orthophotography is the property of the USGS and Horry County

Data Use Constraints:

Orthophotography is the property of the USGS, and Horry County, SC. Orthophotography is the intellectual property of the USGS, and Horry County, SC.

Distribution Information

Distribution 1

CC ID: 739898
Download URL: https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=443
Distributor:
File Name: Customized Download
Description:

Create custom data files by choosing area, map projection, file format, etc.

Distribution 2

CC ID: 665490
Download URL: https://coast.noaa.gov/digitalcoast
Distributor:
Description:

Downloadable Data

File Type: GeoTIFF

Distribution 3

CC ID: 739899
Download URL: https://coast.noaa.gov/htdata/raster2/imagery/HorrySC_2010_443
Distributor:
File Name: Bulk Download
Description:

Simple download of data files.

URLs

URL 1

CC ID: 739901
URL: https://coast.noaa.gov/digitalcoast
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 665503
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 665502
Activity Date/Time: 2017-11-14
Description:

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.

Activity Log 3

CC ID: 718038
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 739900
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

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

Data Quality

Accuracy:

The orthophotos were created to be fully compliant with a horizontal positional accuracy shall not exceed 1 meter tested to NSSDA Standards (95% confidence).

Horizontal Positional Accuracy:

The orthophotos were created to be fully compliant with a horizontal positional accuracy shall not exceed 1 meter tested to NSSDA Standards (95% confidence).

Completeness Report:

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

Conceptual Consistency:

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.

Lineage

Sources

Ground Control

CC ID: 665476
Contact Name: TerraSurv
Publish Date: 2010-01-01
Extent Type: Range
Extent Start Date/Time: 2010-02-01
Extent End Date/Time: 2010-02-15
Source Contribution:

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

CC ID: 665475
Contact Name: Horry County and Sanborn
Publish Date: 2006-01-01
Extent Type: Discrete
Extent Start Date/Time: 2006
Source Contribution:

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

CC ID: 665474
Contact Name: Horry County South Carolina, U.S. Geological Survey (USGS), and Fugro Earthdata, Inc.
Publish Date: 2010-01-01
Extent Type: Discrete
Extent Start Date/Time: 2010
Scale Denominator: 1200
Source Contribution:

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

Process Steps

Process Step 1

CC ID: 665477
Description:

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.

Process Date/Time: 2010-10-01 00:00:00

Catalog Details

Catalog Item ID: 49490
GUID: gov.noaa.nmfs.inport:49490
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-15 15:15+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2022-08-09 17:11+0000
Metadata Record Published: 2018-03-13
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2018-03-13
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-03-13