Greenhorne & O'Mara
20020102
Molokai Photomosaic 2000 (331-0524) - Orthorectification and Mosaicing of Color Aerial Photography Main Eight Hawaiian Islands
remote-sensing image
Greenbelt, MD
Greenhorne & O'Mara
Department of Commerce (DOC), National Oceanic and
Atmospheric Administration (NOAA), National Ocean Service (NOS),
National Centers for Coastal Ocean Science (NCCOS), Center for
Coastal Monitoring and Assessment (CCMA), Biogeography Program
2002
Benthic Habitats of the Main Hawaiian Islands Prepared by
Visual Interpretation from Remote Sensing Imagery Collected by NOAA
Year 2000
map
Silver Spring, MD
NOAA's Ocean Service, National Centers for Coastal Ocean
Science (NCCOS)
http://products.coastalscience.noaa.gov/collections/benthic/e97hawaii/
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.
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.
2000
ground condition
None planned
-157.3291
-157.2289
21.2147
21.0856
NCEI Geoportal FilterCoRIS_MetadataCRCP ProjectMain 8 Hawaiian Islands Benthic Habitat Mapping11291026
CoRIS Discovery Thesaurus
Map Images > Aerial Photographs
CoRIS Theme Thesaurus
EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing > Aircraft > Aerial Photography
EARTH SCIENCE > Oceans > Marine Biology > Marine Plants > Seagrass > Monitoring > Remote Sensing
None
coral
seagrass
SAV
reef
benthic
habitat
mangrove
oceans
ISO 19115 Topic Category
imageryBaseMapsEarthCover
010
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Molokai Island > Molokai Island (21N157W0001)
COUNTRY/TERRITORY > United States of America > Hawaii > Hawaii > Molokai Island (21N157W0001)
None
U.S. Exclusive Economic Zone
United States
Hawaii
Molokai
CoRIS Region
MHI
None
None
National Oceanic and Atmospheric Administration
(NOAA), National Ocean Service (NOS), National Centers for Coastal
Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment
(CCMA), Biogeography Program
Biogeography Team Leader, Mapping Manager
mailing and physical address
1305 East West Highway, N/SCI-1
Silver Spring
MD
20910
301-713-3028
301-713-4388
matt.kendall@noaa.gov
0800-1700, Monday to Friday, EST
Microsoft Windows 2000 Version 5.0
(Build 2195) Service Pack 3; ESRI ArcCatalog 8.2.0.700
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 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.
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.
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.
Department of Commerce (DOC), National Oceanic and
Atmospheric Administration (NOAA), National Ocean Service (NOS),
National Geodetic Survey (NGS)
2000
Color Aerial Photographs Main Hawaiian Islands Collected by
NOAA Year 2000
remote-sensing image
Silver Spring, MD
NOAA's Ocean Service, National Geodetic Survey (NGS)
https://products.coastalscience.noaa.gov/collections/benthic/e97hawaii/data2003.aspx
24000
paper
2000
ground condition
Hawaiian Color Aerial Photographs
Photographs were scanned and orthorectified.
United States Geological Survey
200111
digital elevation models
vector digital data
Reston, VA
U.S. Geological Survey
cartridge tape
2001
publication date
DEM
Elevation data was used to correct for relief
displacement in the photographs.
Analytical Laboratories of Hawaii
2002
ground control points
vector digital data
Kailua, Hawaii
Analytical Laboratories of Hawaii
various media
2001
2002
ground condition
GCPs
Fixed ground features visible in the scanned
photos were selected for GCPs which were then used to georeference
the imagery
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.
Diapositivies 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 Version
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
2002
Greenhorne & O'Mara
Bill Frohn
Technical Director
mailing and physical address
9001 Edmonston Rd
Greenbelt
Maryland
20770
301-220-2591
301-220-1877
wfrohn@g-and-o.com
0800 - 1700, Monday to Friday, EST
2
Raster
Universal Transverse Mercator
4
0.9996
-159
0.0
500000
0.0
Row and Column
1.0
1.0
meters
North American Datum of 1983
Geodetic Reference System 80
6378137
298.257
National Oceanic and Atmospheric Administration
(NOAA), National Ocean Service (NOS), National Centers for Coastal
Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment
(CCMA), Biogeography Program
Biogeography Team Leader, Mapping Manager
mailing and physical address
1305 East West Highway, N/SCI-1
Silver Spring
MD
20910
301-713-3028
301-713-4388
matt.kendall@noaa.gov
0800-1700, Monday to Friday, EST
Downloadable Data
NOAA makes no warranty regarding these data, expressed or implied, nor
does the fact of distribution constitute such a warranty. NOAA and NODC
cannot assume liability for any damages caused by any errors or
omissions in these data, nor as a result of the failure of these data to
function on a particular system.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.
MrSID
https://cdn.coastalscience.noaa.gov/datasets/e97/2003/mosaics/HI_molokai_flight_mosaics.zip
CD-ROM
Burned onto CD-ROM
Free
Project information is available online or on
CD-ROM through the NCCOS Biogeography Program.
The user may utilize a variety of software
to view the imagery mosaics (MrSID files), including ENVI, PCI, Arc
GIS or ArcView 3.1ó or higher and the "MrSID Image Support" Extension
turned on.
20230725
National Oceanic and Atmospheric Administration
(NOAA), National Ocean Service (NOS), National Centers for Coastal
Ocean Science (NCCOS), Center for Coastal Monitoring and Assessment
(CCMA), Biogeography Program
Biogeography Team Leader, Mapping Manager
mailing and physical address
1305 East West Highway, N/SCI-1
Silver Spring
MD
20910
301-713-3028
301-713-4388
matt.kendall@noaa.gov
0800-1700, Monday to Friday, EST
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
Local Time
20040315125400
None
20000101
20001231
https://www.coris.noaa.gov/metadata/records/html/molokai_photomosaics_2000_331-0524.html
343