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Item Identification
Keywords
Physical Location
Data Set Info
Support Roles
Extents
Spatial Info
Access Info
Distribution Info
URLs
Activity Log
Data Quality
Lineage
Catalog Details

Summary

Short Citation
National Centers for Coastal Ocean Science, 2024: 2000 Photo Mosaics and Hyperspectral Imagery for the Main Eight Hawaiian Islands Utilized to Map Shallow Water Benthic Habitats, https://www.fisheries.noaa.gov/inport/item/39332.
Full Citation Examples

Abstract

This project is a cooperative effort among the National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment; the University of Hawaii; and Analytical Laboratories of Hawaii, LLC. The goal of the work was to develop coral reef mapping methods and compare benthic habitat maps generated by photointerpreting georeferenced color aerial photography and hyperspectral imagery. Aerial photographs were acquired for the Main Eight Hawaiian Islands Benthic Mapping Project in 2000 by NOAA Aircraft Operation Centers aircraft and National Geodetic Survey cameras and personnel. Approximately 1,500, color, 9 by 9 inch photos were taken of the coastal waters of the Main Eight Hawaiian Islands at 1:24,000 scale. Specific sun angle and maximum percent cloud cover restrictions were adhered to when possible during photography missions to ensure collection of high quality imagery for the purpose of benthic mapping. In addition, consecutive photos were taken at 60 percent overlap on individual flight lines and 30 percent overlap on adjacent flight lines to allow for orthorectification and elimination of sun glint. The enhanced spectral resolution of hyperspectral and control of bandwidths of multispectral data yield an advantage over color aerial photography particularly when coral health and time series analysis of coral reef community structure are of interest. The AURORA hyperspectral imaging system collected 72 ten nm bands in visible and near infrared spectral range with a 3 meter pixel resolution. The data was processed to select band widths, which optimized feature detection in shallow and deep water. The digital scans of aerial photos and hyperspectral imagery were orthorectified to eliminate sources of spatial distortion. With these orthorectified images 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.

Distribution Information

Access Constraints:

None

Use Constraints:

None

Controlled Theme Keywords

biota, environment, imageryBaseMapsEarthCover, oceans

Child Items

No Child Items for this record.

Contact Information

Point of Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov

Metadata Contact
NCCOS Scientific Data Coordinator
NCCOS.data@noaa.gov

Extents

Geographic Area 1

-160.2986° W, -155.1511° E, 22.2799° N, 19.2604° S

Time Frame 1
2000

Item Identification

Title: 2000 Photo Mosaics and Hyperspectral Imagery for the Main Eight Hawaiian Islands Utilized to Map Shallow Water Benthic Habitats
Short Name: hawaii_image_parent
Status: Completed
Publication Date: 2000
Abstract:

This project is a cooperative effort among the National Ocean Service, National Centers for Coastal Ocean Science, Center for Coastal Monitoring and Assessment; the University of Hawaii; and Analytical Laboratories of Hawaii, LLC. The goal of the work was to develop coral reef mapping methods and compare benthic habitat maps generated by photointerpreting georeferenced color aerial photography and hyperspectral imagery. Aerial photographs were acquired for the Main Eight Hawaiian Islands Benthic Mapping Project in 2000 by NOAA Aircraft Operation Centers aircraft and National Geodetic Survey cameras and personnel. Approximately 1,500, color, 9 by 9 inch photos were taken of the coastal waters of the Main Eight Hawaiian Islands at 1:24,000 scale. Specific sun angle and maximum percent cloud cover restrictions were adhered to when possible during photography missions to ensure collection of high quality imagery for the purpose of benthic mapping. In addition, consecutive photos were taken at 60 percent overlap on individual flight lines and 30 percent overlap on adjacent flight lines to allow for orthorectification and elimination of sun glint. The enhanced spectral resolution of hyperspectral and control of bandwidths of multispectral data yield an advantage over color aerial photography particularly when coral health and time series analysis of coral reef community structure are of interest. The AURORA hyperspectral imaging system collected 72 ten nm bands in visible and near infrared spectral range with a 3 meter pixel resolution. The data was processed to select band widths, which optimized feature detection in shallow and deep water. The digital scans of aerial photos and hyperspectral imagery were orthorectified to eliminate sources of spatial distortion. With these orthorectified images 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:

392

Supplemental Information:

Spatial Reference Information Planar_Coordinate_Information: Abscissa_Resolution: 1.0 m (photomosaics) 3.0 m (hyperspectral imagery); Ordinate_Resolution: 1.0 (photomosaics) 3.0 (hyperspectral imagery)

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
biota
ISO 19115 Topic Category
environment
ISO 19115 Topic Category
imageryBaseMapsEarthCover
ISO 19115 Topic Category
oceans
UNCONTROLLED
NOS Data Explorer Topic Category Remotely Sensed Imagery/Photos
None aerial photography
None AURORA hyperspectral imagery
None benthic
None coral
None habitat
None mangrove
None reef
None SAV
None seagrass

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
None Hawaii
None Kauai
None Lanai
None Main Eight Hawaiian Islands
None Maui
None Molokai
None Niihau
None Oahu

Physical Location

Organization: National Centers for Coastal Ocean Science
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: raster digital data
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.

Support Roles

Data Steward

CC ID: 466184
Date Effective From: 2000
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Distributor

CC ID: 466186
Date Effective From: 2000
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Metadata Contact

CC ID: 466187
Date Effective From: 2000
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Point of Contact

CC ID: 466185
Date Effective From: 2000
Date Effective To:
Contact (Position): NCCOS Scientific Data Coordinator
Email Address: NCCOS.data@noaa.gov

Principal Investigator

CC ID: 466188
Date Effective From: 2000
Date Effective To:
Contact (Person): Battista, Tim
Email Address: tim.battista@noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 466191
W° Bound: -160.2986
E° Bound: -155.1511
N° Bound: 22.2799
S° Bound: 19.2604

Extent Group 1 / Time Frame 1

CC ID: 466190
Time Frame Type: Discrete
Start: 2000

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Access Information

Security Class: Unclassified
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

Distribution Information

Distribution 1

CC ID: 466192
Download URL: http://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/data/mosaics.aspx
Distributor:
Description:

Downloadable Data

File Type (Deprecated): MrSID
Distribution Format: SID-MrSID/Multiresolution Seamless Image DB

URLs

URL 1

CC ID: 466182
URL: http://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/data/mosaics.aspx
URL Type:
Online Resource

URL 2

CC ID: 466183
URL: http://ccma.nos.noaa.gov/products/biogeography/hawaii_cd/data/
URL Type:
Online Resource

Activity Log

Activity Log 1

CC ID: 466216
Activity Date/Time: 2013-10-30
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 466215
Activity Date/Time: 2017-04-05
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 Log 3

CC ID: 584412
Activity Date/Time: 2017-09-13
Description:

Partial upload of Spatial Info section only.

Activity Log 4

CC ID: 601036
Activity Date/Time: 2017-11-01
Description:

Replaced entire Lineage section to populate new Source Contribution field.

Activity Log 5

CC ID: 716642
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Data Quality

Horizontal Positional Accuracy:

PHOTOMOSAICS 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. HYPERSPECTRAL IMAGERY Hyperspectral imagery was obtained at 3 meter pixel resolution.

Completeness Report:

PHOTOMOSAICS 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 results mosaics have visible seams between adjacent photos. This provides the photointerpreter with "true color" imagery for maximum ability to identify and delineate benthic features. HYPERSPECTRAL IMAGERY Habitat delineations could be made accurately in water depths up to 30 meters. Band combinations were selected which optimized benthic habitat information in shallow and deep water and the scenes were converted into RGB composites

Conceptual Consistency:

PHOTOMOSAICS 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. Whenever possible, parts of images obscured by sun glint 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. HYPERSPECTRAL IMAGERY All habitat delineations were completed by a photointerpreter on data that had been processed only to maximize specific band widths for viewing data at varying depths.

Lineage

Sources

Color Aerial Photographs Main Hawaiian Islands Collected by NOAA Year 2000

CC ID: 601037
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
Scale Denominator: 24000
Citation URL: http://www8.nos.noaa.gov/biogeo_public/aerial/search.aspx
Source Contribution:

Photographs were scanned and orthorectified. | Source Geospatial Form: remote-sensing image | Type of Source Media: paper

digital elevation models

CC ID: 601038
Contact Name: United States Geological Survey
Publish Date: 2001-11-01
Extent Type: Discrete
Extent Start Date/Time: 2001
Citation URL: http://ccma.nos.noaa.gov/products/biogeography/mapping/dems/
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

ground control points

CC ID: 601039
Contact Name: Analytical Laboratories of Hawaii
Publish Date: 2002-01-01
Extent Type: Range
Extent Start Date/Time: 2001
Extent End Date/Time: 2002
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

Process Steps

Process Step 1

CC ID: 601040
Description:

HYPERSPECTRAL IMAGERY The hyperspectral image data were collected using the AURORA Hyperspectral Imaging data acquisition system (Advanced Power Technologies, Inc). Navigation data were incorporated using the Applanix inertial navigation system. The imaging system was used to collect 72 ten nm bands in the visible and near infrared spectral range at a three meter pixel resolution.The raw data were processed by the Analytical Laboratories of Hawaii, LLC using Research Systems, Inc. ENVI software. Band combinations were selected which optimized benthic habitat information in shallow and deep water and scenes were converted into RGB composites. The hyperspectral images were georeferenced and mosaiced using Scene Stitcher, a stand-along software program produced by Advanced Power Technologies, Inc.PHOTOMOSAICSAerial photographs were acquired for the main Hawaiian Islands Benthic Mapping Projects 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/mosaicing of the TIFFs was performed using a variety of softcopy photogrammetric software including Socet Set 4.2.1, 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 Range is 2000 - 2002

Process Date/Time: 2002-01-01 00:00:00

Catalog Details

Catalog Item ID: 39332
GUID: gov.noaa.nmfs.inport:39332
Metadata Record Created By: Tyler Christensen
Metadata Record Created: 2017-04-05 12:51+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 Last Review Date: 2018-02-08
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2019-02-08