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Original Articles

Automated Derivation of Bathymetric Information from Multi-Spectral Satellite Imagery Using a Non-Linear Inversion Model

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Pages 281-298 | Received 11 May 2008, Accepted 04 Sep 2008, Published online: 04 Dec 2008
 

Abstract

Most previous studies utilized a log-linear regression model to invert multi-spectral images into bathymetric data. Based on the Levenberg-Marquardt optimization algorithm, we developed an automated method for calibrating the parameters for a non-linear inversion model. Our method has been successfully applied to an IKONOS multispectral image. We compared depth data derived from our model to those estimated using a conventional log-linear inversion model. Bathymetric data derived from the non-linear inversion model are slightly more accurate and stable, particularly for deeper benthic habitats, than those derived from a conventional log-linear model although their overall performances are very similar.

Acknowledgements

This research is funded by the NOAA Sea Grant Program #NA16RG1078 and Norman Hackerman Advanced Research Program 010366-0017-2007.

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