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Proceedings Paper

Image analysis for water surface and subsurface feature detection in shallow waters
Author(s): Charles R. Bostater; James Jones; Heather Frystacky; Mate Kovacs; Oszkar Jozsa
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Paper Abstract

Carefully collected airborne imagery demonstrates the ability to see water surface features as well as shallow bottom features such as submerged vegetation and manmade targets. Traditional photogrammetric imagery and airborne digital imagery both suffer from a loss in image clarity due to a number of factors, including capillary and small gravity waves, the water column or in-situ constituents. The use of submerged as well as surface man-made calibration targets deployed during airborne or in-situ subsurface image acquisitions forms a preliminary basis for correcting imagery in order to improve subsurface and surface features and their detection. Methods presented as well as imagery at 490 nm, 532 nm and 698-700 nm clearly show subsurface features in shallow waters. The techniques utilized include the use of large frame cameras with photogrammetric films in combination of special filters, such as a Wratten # 70, in order to provide narrower spectral features near the vegetative "red edge" to be used to improve interpretation of hyperspectral push broom imagery. Combined imagery from several sensors and platforms, including autonomous underwater vehicles, form the basis of data fusion for surface and subsurface automatic feature extraction. Data presented from a new hyperspectral imaging system demonstrates the utility of sub-meter hyperspectral imagery for use in subsurface feature detection.

Paper Details

Date Published: 22 October 2010
PDF: 7 pages
Proc. SPIE 7825, Remote Sensing of the Ocean, Sea Ice, and Large Water Regions 2010, 78250H (22 October 2010); doi: 10.1117/12.870728
Show Author Affiliations
Charles R. Bostater, Florida Institute of Technology (United States)
James Jones, Florida Institute of Technology (United States)
Heather Frystacky, Florida Institute of Technology (United States)
Mate Kovacs, Florida Institute of Technology (United States)
Oszkar Jozsa, Florida Institute of Technology (United States)


Published in SPIE Proceedings Vol. 7825:
Remote Sensing of the Ocean, Sea Ice, and Large Water Regions 2010
Charles R. Bostater; Stelios P. Mertikas; Xavier Neyt; Miguel Velez-Reyes, Editor(s)

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