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Under this project, Photo Science orthorectified
and mosaiced 207 selected color aerial photos of six of the eight
main Hawaiian Islands (Hawaii, Kauai, Lanai, Maui, Molokai, and
Oahu). Using digital imagery collected and scanned by NOAA, Photo
Science defined and selected ground control from differential GPS
data collection. All Government-supplied collected static ground
control points were utilized to create a robust analytical triangulation
solution. Digital elevation models and each bundle block adjustment
were utilized to generate stereo pairs and orthorectify the imagery.
Boeing SoftPlotter photogrammetric software was used for orthophoto
creation. No tonal balancing was performed on the imagery to allow
NOAA to utilize the imagery for the photointerpretation of 37 levels
of benthic habitat. Creative cut lines between orthophotos were
employed with particular attention paid to eliminating open water
areas within the imagery that contained turbity, wave action, and
sun glare. Minimal feathering along cut lines was used for visual
presentation purposes did not affect photointerpretation quality.
The National Ocean Service is using this imagery
to create maps of the region’s marine resources including
coral reefs, seagrass beds and other important habitats for fisheries,
tourism, and other aspects of the coastal economy.
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Photo Science provided photogrammetric feature
extraction and GIS mapping services for military airports and other
military facilities worldwide as part of the “Ron Brown Initiative”.
Photo Science utilized conventional aerial photography and surveyed
ground control as well as information derived from National Technical
Means to identify, analyze, and map all significant airport features
and vertical obstructions including runways/taxiways, buildings,
navigation aids, communication towers, power/communication lines,
security perimeters etc., within a five-mile radius of the airport
using softcopy feature extraction technology in a secure environment.
The resultant data, the aircraft approach, and departure corridors
were displayed in three dimensions to visualize and model potential
vertical obstructions and other airfield threats hazards as well
as identify and evaluate alternative solutions for corrective measures
- ensuring safety of flight.
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