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Short Citation:
OCM Partners, 2022: St. John 2012 and St. Thomas 2010 Orthographic Imagery, https://www.fisheries.noaa.gov/inport/item/49488.

Item Identification

Title: St. John 2012 and St. Thomas 2010 Orthographic Imagery
Short Name: 2010_usace_stjohn_stthomas
Status: Completed
Publication Date: 2012-12-27
Abstract:

This file is a single ESRI raster catalog comprised of a collection of individual GeoTIFFs of the islands of St. John and St. Thomas (USVI). An orthographic aerial image is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthographic imagery combines the image characteristics of a photograph with the geometric qualities of a map. The source imagery was obtained from January 2012 through March 2012 and used to produce orthophotos with a 0.3 meter (approximately 1 foot) ground sample distance (GSD). The raw imagery was captured at 12-bit radiometric resolution and converted to 8-bit radiometry during post processing. The imagery was captured with approximately 60% forward overlap between adjacent exposures and 30% sidelap between all adjacent flight lines utilizing a Z/I Imaging DMC-II 230 digital sensor. The orthographic imagery is available as 4-band (RGBI) GeoTIFF formatted digital images. The projected coordinate system is State Plane Puerto Rico / US Virgin Islands (Zone 5200), NAD 83, GRS 80, Units Meters.

Original contact information:

Contact Org: U.S. Army Corps of Engineers, Jacksonville District, Geomatics Section

Phone: 904-232-2214

Email: ted.n.schall@usace.army.mil

Purpose:

The purpose of the project is to provide the United States Army Corps of Engineers with updated digital orthographic aerial imagery covering all of the Commonwealth of Puerto Rico and the U.S. Virgin Islands. The Corps regularly uses digital orthographic imagery to support regulatory, land management and acquisition, planning, engineering and habitat restoration projects. The data may also become available to local, state and other federal agencies for their specific management and analysis needs.

Notes:

11934

Supplemental Information:

The data design specifications for this product includes several directed to insure its quality, consistency, and usability. These specifications address some of the technical issues associated with orthoimage production: 1) the tops of buildings and other structures elevated above the surface of the ground 'tilt' away from the center point of the source imagery and from their own bases as a result of perspective and their height which is not compensated for in digital elevation models of the ground surface and 2) individual orthoimages may be assembled from several source aerial images.

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Category imageryBaseMapsEarthCover
None framework
None orthoimage
None Remotely Sensed Imagery/Photos

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None St. John
None St. Thomas
None U.S. Virgin Islands

Physical Location

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

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: Image (digital)
Distribution Liability:

Users must assume responsibility to determine the usability of these data.

Support Roles

Data Steward

CC ID: 665425
Date Effective From: 2012-12-27
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: 665427
Date Effective From: 2012-12-27
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: 665428
Date Effective From: 2012-12-27
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: 665426
Date Effective From: 2012-12-27
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: Date of image acquisition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 665431
W° Bound: -64.80672
E° Bound: -64.593724
N° Bound: 18.40466
S° Bound: 17.749194

Extent Group 1 / Time Frame 1

CC ID: 665430
Time Frame Type: Range
Start: 2012-01-01
End: 2012-12-27

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

Acknowledgment of the United States Army Corps of Engineers would be appreciated for products derived from these data.

URLs

URL 1

CC ID: 739893
URL: https://coast.noaa.gov/digitalcoast/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 665440
Activity Date/Time: 2016-05-23
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 665439
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: 718036
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 739892
Activity Date/Time: 2018-03-13
Description:

Partial upload to move data access links to Distribution Info.

Technical Environment

Description:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.3.3600

Data Quality

Horizontal Positional Accuracy:

Horizontal positional accuracy of the set of orthographic images was determined by comparing the positions of twenty well defined points within the orthographic imagery to their corresponding field positions as determined by GPS positioning methods. The comparison of the ortho and field collected data resulted in the determination of the following statistics: Horizontal Root Mean Square Error (RMSEh) = 0.60 meters; Horizontal Standard Deviation (Sh) = 0.28 meters; National Standard for Spatial Data Accuracy Circular Error (NSSDAcircular) = 1.03 meters.; Quantitative Value: 1.03 meters, Test that produced the value: Horizontal positional accuracy of the set of orthographic images was determined by comparing the positions of twenty well defined points within the orthographic imagery to their corresponding field positions as determined by GPS positioning methods. The comparison of the ortho and field collected data resulted in the determination of the following statistics: Horizontal Root Mean Square Error (RMSEh) = 0.60 meters; Horizontal Standard Deviation (Sh) = 0.28 meters; National Standard for Spatial Data Accuracy Circular Error (NSSDAcircular) = 1.03 meters.

Completeness Report:

These data cover all of the islands of the US Virgin Islands. These specifications address some of the technical issues associated with orthoimage production: 1) the tops of buildings and other structures elevated above the surface of the ground 'tilt' away from the center point of the source imagery and from their own bases as a result of perspective and their height which is not compensated for in digital elevation models of the ground surface and 2) individual orthoimages may be assembled from several source aerial images.

Conceptual Consistency:

These specifications address some of the technical issues associated with orthoimage production: 1) the tops of buildings and other structures elevated above the surface of the ground 'tilt' away from the center point of the source imagery and from their own bases as a result of perspective and their height which is not compensated for in digital elevation models of the ground surface and 2) individual orthoimages may be assembled from several source aerial images.

Lineage

Sources

St. John 2012 and St. Thomas 2010 Orthographic Imagery

CC ID: 665419
Contact Name: United States Army Corps of Engineers
Publish Date: 2012-12-27
Extent Type: Range
Extent Start Date/Time: 2012-01-01
Extent End Date/Time: 2012-12-27
Scale Denominator: 2400
Source Contribution:

Flight planning, image acquisition, image processing and image packaging. | Source Geospatial Form: remote-sensing image | Type of Source Media: disc

Process Steps

Process Step 1

CC ID: 665420
Description:

This file is a single ESRI raster catalog comprised of a collection of individual GeoTIFFs of the island of St. John and St. Thomas (USVI). An orthographic aerial image is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthographic imagery combines the image characteristics of a photograph with the geometric qualities of a map. The source imagery was obtained from January 2012 through March 2012 and used to produce orthophotos with a 0.3 meter (approximately 1 foot) ground sample distance (GSD). The raw imagery was captured at 12-bit radiometric resolution and converted to 8-bit radiometry during post processing. The imagery was captured with approximately 60% forward overlap between adjacent exposures and 30% sidelap between all adjacent flight lines utilizing a Z/I Imaging DMC-II 230 digital sensor. The orthographic imagery is available as 4-band (RGBI) GeoTIFF formatted digital images. The projected coordinate system is State Plane Puerto Rico / US Virgin Islands (Zone 5200), NAD 83, GRS 80, Units Meters.

Process Date/Time: 2012-12-27 00:00:00
Source: St. John 2012 and St. Thomas 2010 Orthographic Imagery

Catalog Details

Catalog Item ID: 49488
GUID: gov.noaa.nmfs.inport:49488
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