2006-2007 natural color orthophotos covering the islands of Puerto Rico, Culebra, Vieques, St. Thomas, St. John, and St. Croix
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:49577 | Updated: January 11, 2024 | Published / External
Summary
Short Citation
OCM Partners, 2024: 2006-2007 natural color orthophotos covering the islands of Puerto Rico, Culebra, Vieques, St. Thomas, St. John, and St. Croix, https://www.fisheries.noaa.gov/inport/item/49577.
Full Citation Examples
This file is from a collection of GeoTIFF format natural color and false color infrared orthophotos covering the islands of Puerto Rico, Culebra, Vieques, St. Thomas, St. John, and St. Croix (USVI). An orthophoto is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthophotography combines the image characteristics of a photograph with the geometric qualities of a map. Each orthophoto provides imagery for a standard USGS 1/16th quadrangle map. False color infrared imagery was only generated for those 1/16th quadrangle maps falling within one kilometer of the coast line. The source imagery was obtained from November 2006 through March 2007 and used to produce orthophotos with a one foot ground sample distance (GSD). Imagery was acquired at 0.9 foot GSD resolution. Flight height maintained during mission was 8,650 feet AGL. The imagery was captured at 12-bit radiometric resolution and converted to 8-bit radiometric resolution during post processing. The imagery was captured with 30% sidelap between all adjacent flight lines. The PRVI project area was divided into 20 flight blocks due to necessary base station and flight line length requirements. The imagery was obtained and processed by all digital means beginning with data acquisition using an ADS40 digital sensor. The orthophotos are available in GeoTIFF form. 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
Phone: 314-331-8385
Email: Robert.D.Mesko@mvs02.usace.army.mil
Distribution Information
-
Create custom data files by choosing area, map projection, file format, etc.
-
Simple download of data files.
None
None. Acknowledgment of the United States Army Corps of Engineers would be appreciated for products derived from these data.
Controlled Theme Keywords
imageryBaseMapsEarthCover
Child Items
No Child Items for this record.
Contact Information
Point of Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-67.338055° W,
-64.473611° E,
18.626111° N,
17.591666° S
2007-10-31
Item Identification
Title: | 2006-2007 natural color orthophotos covering the islands of Puerto Rico, Culebra, Vieques, St. Thomas, St. John, and St. Croix |
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Short Name: | ads40_pr_rgb |
Status: | Completed |
Publication Date: | 2008-02-17 |
Abstract: |
This file is from a collection of GeoTIFF format natural color and false color infrared orthophotos covering the islands of Puerto Rico, Culebra, Vieques, St. Thomas, St. John, and St. Croix (USVI). An orthophoto is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthophotography combines the image characteristics of a photograph with the geometric qualities of a map. Each orthophoto provides imagery for a standard USGS 1/16th quadrangle map. False color infrared imagery was only generated for those 1/16th quadrangle maps falling within one kilometer of the coast line. The source imagery was obtained from November 2006 through March 2007 and used to produce orthophotos with a one foot ground sample distance (GSD). Imagery was acquired at 0.9 foot GSD resolution. Flight height maintained during mission was 8,650 feet AGL. The imagery was captured at 12-bit radiometric resolution and converted to 8-bit radiometric resolution during post processing. The imagery was captured with 30% sidelap between all adjacent flight lines. The PRVI project area was divided into 20 flight blocks due to necessary base station and flight line length requirements. The imagery was obtained and processed by all digital means beginning with data acquisition using an ADS40 digital sensor. The orthophotos are available in GeoTIFF form. 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 Phone: 314-331-8385 Email: Robert.D.Mesko@mvs02.usace.army.mil |
Purpose: |
The purpose of the project is to provide the United States Army Corps of Engineers with current year digital orthophotos covering all of Puerto Rico and the US Virgin Islands. The Corps regularly uses digital orthophotos 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. The one-foot resolution data collected for this project is higher resolution than the previous island-wide collection in 2004, which was one-meter resolution. |
Notes: |
11977 |
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 photography 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 images (strips). |
Keywords
Theme Keywords
Thesaurus | Keyword |
---|---|
ISO 19115 Topic Category |
imageryBaseMapsEarthCover
|
UNCONTROLLED | |
None | framework |
None | orthoimage |
None | Remotely Sensed Imagery/Photos |
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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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
Date Effective From: | 2008-02-17 |
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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
Date Effective From: | 2008-02-17 |
---|---|
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
Date Effective From: | 2008-02-17 |
---|---|
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
Date Effective From: | 2008-02-17 |
---|---|
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
W° Bound: | -67.338055 | |
---|---|---|
E° Bound: | -64.473611 | |
N° Bound: | 18.626111 | |
S° Bound: | 17.591666 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
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Start: | 2007-10-31 |
Spatial Information
Spatial Representation
Representations Used
Grid: | Yes |
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Access Information
Security Class: | Unclassified |
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Data Access Constraints: |
None |
Data Use Constraints: |
None. Acknowledgment of the United States Army Corps of Engineers would be appreciated for products derived from these data. |
Distribution Information
Distribution 1
Download URL: | https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=394 |
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Distributor: | |
File Name: | Customized Download |
Description: |
Create custom data files by choosing area, map projection, file format, etc. |
Distribution 2
Download URL: | https://coastalimagery.blob.core.windows.net/digitalcoast/PuertoRico_RGB_2007_394/index.html |
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Distributor: | |
File Name: | Bulk Download |
Description: |
Simple download of data files. |
URLs
URL 1
URL: | https://coast.noaa.gov/dataviewer |
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URL Type: |
Online Resource
|
URL 2
URL: | https://coast.noaa.gov/digitalcoast |
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URL Type: |
Online Resource
|
Activity Log
Activity Log 1
Activity Date/Time: | 2016-05-23 |
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Description: |
Date that the source FGDC record was last modified. |
Activity Log 2
Activity Date/Time: | 2017-11-14 |
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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
Activity Date/Time: | 2018-02-08 |
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Description: |
Partial upload of Positional Accuracy fields only. |
Activity Log 4
Activity Date/Time: | 2018-03-13 |
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Description: |
Partial upload to move data access links to Distribution Info. |
Technical Environment
Description: |
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.3.0.800 |
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Data Quality
Horizontal Positional Accuracy: |
The accuracy value was determined by measuring photo-identifiable control points collected with GPS survey methods in the orthophotos.; Quantitative Value: 5.00 meters, Test that produced the value: ASPRS Class I Standard for 200 Scale Mapping for areas defined in the document PR_USVI_DEM_Footprint07_Rev.pdf; Quantitative Value: 10.0 meters, Test that produced the value: ASPRS Class I Standard for 400 Scale Mapping for areas defined in the document PR_USVI_DEM_Footprint07_Rev.pdf |
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Completeness Measure: |
Cloud Cover: 5 |
Completeness Report: |
These data cover all of the islands of Puerto Rico, Culebra, Vieques, and the US Virgin Islands. Each orthophoto has an overedge of approximately 30 meters on all sides of its centering 1.875 minute cell. |
Conceptual Consistency: |
Sample points taken from overlapping areas of adjacent image strips that contributed image chips to each orthophoto tile are typically consistent to the 2-3 pixel level. This not only ensures that a consistent mosaic can be created from the adjacent image strips acquired with the ADS40 pushbroom scanner but also means that the images have good precision and as a group are spatially self-consistent. |
Lineage
Sources
DEM for Orthorectification of 2006-2007 PRVI Orthophotography
Publish Date: | 2005-02-01 |
---|---|
Extent Type: | Discrete |
Extent Start Date/Time: | 2005-02-01 |
Scale Denominator: | 2400 |
Source Contribution: |
Ground elevations used for orthorectification process | Source Geospatial Form: raster digital data | Type of Source Media: disc |
Digital Aerial Imagery for 2006-2007 PRVI Orthophotography
Publish Date: | 2008-02-17 |
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Extent Type: | Discrete |
Extent Start Date/Time: | 2007-10-31 |
Scale Denominator: | 2400 |
Source Contribution: |
Flight planning, image acquisition, image processing and image packaging. | Source Geospatial Form: (Select One) | Type of Source Media: disc |
Ground Control for 2006-2007 PRVI Orthophotography
Publish Date: | 2007-01-15 |
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Extent Type: | Discrete |
Extent Start Date/Time: | 2006-11-01 |
Scale Denominator: | 2400 |
Source Contribution: |
Horizontal and vertical control used to establish positions and elevations for reference and correlation purposes and as input to the aerotriangulation process. | Source Geospatial Form: (Select One) | Type of Source Media: disc |
Process Steps
Process Step 1
Description: |
Ground control consisted of photo identifiable surveyed points. The imagery was collected at an altitude of 8650 ft using an ADS40 digital sensor. Image quality was verified during the post flight review phase. Factors considered during this review included but were not limited to the presence of smoke and/or cloud cover, contrails, light conditions and sun glint. The triangulated strips were rectified with a recent DEM of the area provided by 3001, Inc. The vertical accuracy of the DEM varies based on the elevation postings and is generally estimated at 30-45cm. The red, green and blue bands were combined to generate a final natural color orthophoto, and the near - infrared, red and green bands were combined to generate a final false color infrared orthophoto. The ADS40 sensor collects twelve bit image data which requires radiometric adjustment for output in standard eight bit image channels. Converting to eight bit results in a reduction of the color range from 4096 to 256 - thus loss of radiometric detail is inevitable. The extra dynamic range of the sensor permits greater object differentiation in shadows and in bright areas. The sixteen bit dynamic range permitted the imagery to be more effectively color balanced than is possible with eight bit imagery. This was accomplished by performing tonal enhancements immediately prior to the reduction from sixteen bit to eight bit data. In addition to color balancing these eight bit images were adjusted to create seamless imagery to the highest extent practically achievable. The imagery was mosaicked using a combination of automated and manual seamlines generation. Project specified tiles were extracted from the mosaic. Final image tiles were reviewed for artifacts and anomalies and adjusted as part of quality control procedures. When necessary, local corrections to the imagery were performed to minimize such effects. |
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Process Date/Time: | 2008-02-17 00:00:00 |
Source: | Digital Aerial Imagery for 2006-2007 PRVI Orthophotography |
Catalog Details
Catalog Item ID: | 49577 |
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GUID: | gov.noaa.nmfs.inport:49577 |
Metadata Record Created By: | Anne Ball |
Metadata Record Created: | 2017-11-15 15:15+0000 |
Metadata Record Last Modified By: | Kirk Waters |
Metadata Record Last Modified: | 2024-01-11 11:52+0000 |
Metadata Record Published: | 2024-01-11 |
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 |