Orthorectification and Mosaicking of Color Aerial Photography for the Main Eight Hawaiian Islands: Hawaii (420n-0619)
National Centers for Coastal Ocean Science
Data Set
(DS)
| ID: 38717
| Published / External
Created: 2017-04-05
|
Last Modified: 2023-10-17
Project (PRJ) | ID: 37187
ID: 38717
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | Orthorectification and Mosaicking of Color Aerial Photography for the Main Eight Hawaiian Islands: Hawaii (420n-0619) |
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Short Name | 420n-0619 |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2002-01-02 |
* » Abstract |
Habitat maps of the main Hawaiian Islands were created by visual interpretation of aerial photos and hyperspectral imagery using the Habitat Digitizer extension. Aerial photographs are valuable tools for natural resource managers and researchers since they provide an excellent record of the location and extent of habitats. However, spatial distortions in aerial photographs due to such factors as camera angle, lens characteristics, and relief displacement must be accounted for during analysis to prevent incorrect measurements of area, distance, and other spatial parameters. These distortions of scale within an image can be removed through orthorectification. During orthorectification, digital scans of aerial photos are subjected to algorithms that eliminate each source of spatial distortion. The result is a georeferenced digital mosaic of several photographs with uniform scale throughout the mosaic. Features near land are generally georeferenced with greater accuracy while the accuracy of features away from land is generally not as good. Where no land is in the original photographic frame only kinematic GPS locations and image tie points were used to georeference the images. After an orthorectified mosaic is created, photointerpreters can accurately and reliably delineate boundaries of features in the imagery as they appear on the computer monitor using a software interface such as the Habitat Digitizer. |
* Purpose |
The National Ocean Service is conducting research to digitally map biotic resources and coordinate a long-term monitoring program that can detect and predict change in U.S. coral reefs, and their associated habitats and biological communities. |
Notes |
541 |
Other Citation Details | |
• Supplemental Information | |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | environment |
ISO 19115 Topic Category | imageryBaseMapsEarthCover |
NOS Data Explorer Topic Category | Environmental Monitoring |
NOS Data Explorer Topic Category | Remotely Sensed Imagery/Photos |
None | aerial photography |
None | benthic |
None | coral |
None | habitat |
None | mangrove |
None | oceans |
None | reef |
None | SAV |
None | seagrass |
Temporal Keywords
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* Spatial Keywords
Thesaurus | Keyword |
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None | Hawaii |
None | Island of Hawaii |
None | U.S. Exclusive Economic Zone |
None | United States |
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Physical Location
• » Organization | National Centers for Coastal Ocean Science |
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• » City | Silver Spring |
• » State/Province | MD |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | remote-sensing image |
• Entity Attribute Overview | |
Entity Attribute Detail Citation | |
Entity Attribute Detail URL | |
Distribution Liability |
The National Oceanic and Atmospheric Administration (NOAA) National Centers for Coastal Ocean Science(NCCOS) produced this data CD-ROM. NCCOS Biogeography Program does not guarantee the accuracy of the geographic features or attributes. |
Data Set Credit |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2002-01-02 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
Phone | |
Fax | |
Mobile | |
URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2002-01-02 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
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URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2002-01-02 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
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URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2002-01-02 |
Date Effective To | |
Position | NCCOS Scientific Data Coordinator |
Email Address | NCCOS.data@noaa.gov |
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URL | |
Business Hours | |
Contact Instructions |
* » Support Role | Principal Investigator |
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* » Date Effective From | 2002-01-02 |
Date Effective To | |
Person | Battista, Tim |
Email Address | tim.battista@noaa.gov |
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Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -155.9034 |
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* » E° Bound | -155.7857 |
* » N° Bound | 20.0464 |
* » S° Bound | 19.9402 |
* » Description |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Discrete |
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* » Start | 2000 |
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Description |
Spatial Information
Spatial Resolution
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Equivalent Scale Denominator | |
Level of Detail Description |
Spatial Representation
Grid Representation Used? | Yes |
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Vector Representation Used? | |
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Stereo Model Representation Used? | |
Video Representation Used? |
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Access Information
Data License | |
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Data License URL | |
Data License Statement | |
* » Security Class | Unclassified |
* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
Project information is available online or on CD-ROM through the NCCOS Biogeography Program.; |
• » Data Access Constraints |
None |
• Data Use Constraints |
None |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
Start Date | |
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» Download URL | http://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/mosaics/420n-0619-airphotos.zip |
Distributor | |
File Name | |
Description |
Downloadable Data |
File Date/Time | |
File Type (Deprecated) | MrSID |
Distribution Format | SID-MrSID/Multiresolution Seamless Image DB |
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Archive Information
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URLs
URL | http://coastalscience.noaa.gov/datasets/ccma/biogeo/hawaii/mosaics/420n-0619-airphotos.zip |
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Name | |
URL Type | Online Resource |
File Resource Format | |
Description |
URL | http://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/data/hawaiifl.aspx |
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Name | |
URL Type | Online Resource |
File Resource Format | |
Description |
URL | http://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/data/ |
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URL Type | Online Resource |
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Activity Log
Activity Time | 2013-12-24 |
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Activity Type | |
Responsible Party | |
Description |
Date that the source FGDC record was last modified. |
Activity Time | 2017-04-05 |
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Activity Type | |
Responsible Party | |
Description |
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
Activity Time | 2017-09-13 |
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Activity Type | |
Responsible Party | |
Description |
Partial upload of Spatial Info section only. |
Activity Time | 2017-11-01 |
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Activity Type | |
Responsible Party | |
Description |
Replaced entire Lineage section to populate new Source Contribution field. |
Activity Time | 2018-02-08 |
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Partial upload of Positional Accuracy fields only. |
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Issues
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Technical Environment
Description |
Microsoft Windows 2000 Version 5.0(Build 2195) Service Pack 3; ESRI ArcCatalog 8.2.0.700 |
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Data Quality
Representativeness | |
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Accuracy | |
Analytical Accuracy | |
Horizontal Positional Accuracy |
Average spatial accuracy of individual photomosaics is reported in Chapter 3 of Benthic Habitats of the Main Hawaiian Islands. Positional accuracy was determined by solution of Softplotter generated model (RMS less than 1) and by comparison to independent ground control data. The georegistration of these photographs is at least 95% sigma RMS of 5 meters. |
Vertical Positional Accuracy | |
Quantitation Limits | |
Bias | |
Comparability | |
Completeness Measure |
Cloud Cover: 2 |
Precision | |
Analytical Precision | |
Field Precision | |
Sensitivity | |
Detection Limit | |
Completeness Report |
No color balancing was attempted since this alters color and textural signatures in the original imagery and interferes with the photointerpreter's ability to delineate habitats. As a result mosaics have visible seams between adjacent photos. This provides the photointerpreter with "true color" imagery for maximum ability to identify and delineate benthic features. |
Conceptual Consistency |
Once all of the photographs were orthorectified, the best segments of each photograph were selected for creation of the final mosaic. Segments of each photograph were selected to minimize sun glint, cloud interference, and turbidity in the final mosaic. Where possible, parts of images obscured by sunglint or clouds were replaced with cloud/glint free parts of overlapping images. As a result, most mosaics have few or no clouds or sun glint obscuring bottom features. |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | |
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» Do these Data Comply with the Data Access Directive? | |
» Is Access to the Data Limited Based on an Approved Waiver? | |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
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» Actual or Planned Long-Term Data Archive Location | |
» If World Data Center or Other, Specify | |
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
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» Approximate Delay Between Data Collection and Archiving | |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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Lineage
» Lineage Statement |
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Sources
Citation Title | Color Aerial Photographs Main Hawaiian Islands Collected by NOAA Year 2000 |
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Contact Role Type | |
Contact Type | |
Contact Name | Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS),National Geodetic Survey (NGS) |
Publish Date | 2000-01-01 |
Extent Type | Discrete |
Extent Start Date/Time | 2000 |
Extent End Date/Time | |
Scale Denominator | 24000 |
Citation URL | http://ccma.nos.noaa.gov/products/biogeography/mapping/dems/ |
Citation URL Name | |
Citation URL Description | |
Source Contribution |
Photographs were scanned and orthorectified. | Source Geospatial Form: remote-sensing image | Type of Source Media: paper |
Citation Title | digital elevation models |
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Contact Role Type | |
Contact Type | |
Contact Name | United States Geological Survey |
Publish Date | 2001-11-01 |
Extent Type | Discrete |
Extent Start Date/Time | 2001 |
Extent End Date/Time | |
Scale Denominator | |
Citation URL | http://ccma.nos.noaa.gov/products/biogeography/mapping/dems/ |
Citation URL Name | |
Citation URL Description | |
Source Contribution |
Elevation data was used to correct for relief displacement in the photographs. | Source Geospatial Form: vector digital data | Type of Source Media: cartridge tape |
Citation Title | ground control points |
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Contact Role Type | |
Contact Type | |
Contact Name | Analytical Laboratories of Hawaii |
Publish Date | 2002-01-01 |
Extent Type | Range |
Extent Start Date/Time | 2001 |
Extent End Date/Time | 2002 |
Scale Denominator | |
Citation URL | |
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Citation URL Description | |
Source Contribution |
Fixed ground features visible in the scanned photos were selected for GCPs which were then used to georeference the imagery | Source Geospatial Form: vector digital data | Type of Source Media: various media |
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Process Steps
Process Step Number | 1 |
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» Description |
Aerial photographs were acquired for the main Hawaiian Islands Benthic Mapping Project in 2000 by NOAA Aircraft Operation Centers aircraft and National Geodetic Survey cameras and personnel. Approximately 1,449, color 9x9 inch photos were taken of the coastal waters of the main Hawaiian Islands at a 1:24,000 scale. Prints and diapositives were created from the original negatives. Diapositives were then scanned at a resolution of 500 dpi using a photogrammetric quality scanner, yielding one by one meter pixels for the 1:24,000 scale photography. All scans were saved in TIFF format for the purposes of orthorectification and photointerpretation. Georeferencing/mosaicking of the TIFFs was performed using a variety of softcopy photogrammetric software including Socet Set Version4.2.1, Autometric Softplotter, PCI OrthoEngine, and Erdas OrthoBASE. First, lens correction parameters were applied to each frame to eliminate image distortion. Airborne kinematic GPS was then used, to provide first order georegistration. Image to image tie-points were then used to further co-register the imagery, especially for photos taken over open water when ground control points were not available. Fixed ground features visible in the scanned photos were selected for ground control points (GCPs)which were then used to georeference imagery. GCPs were measured using a Differentially-corrected Global Positioning System (DGPS). We obtained points with a wide distribution throughout the imagery, especially on peninsulas and outer islands whenever possible since this results in the most accurate registration throughout each image. Only ground control points for terrestrial features were collected due to the difficulty of obtaining precise positions for submerged features. Pre-existing USGS 10-meter digital elevation models were used to correct for relief displacement |
Process Date/Time | 2002-01-01 00:00:00 |
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Acquisition Information
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Child Items
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Related Items
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Catalog Details
Catalog Item ID | 38717 |
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Metadata Record Created By | Tyler Christensen |
Metadata Record Created | 2017-04-05 12:48+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2023-10-17 16:12+0000 |
Metadata Record Published | 2018-02-08 |
Owner Org | NCCOS |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2018-02-08 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2019-02-08 |
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