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A Comparison of Seafloor Classification Methods Through the Use ...

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Benthic <strong>Classification</strong> <strong>Methods</strong><br />

<strong>Seafloor</strong> <strong>Classification</strong> efforts falls behind that <strong>of</strong> terrestrial classification because <strong>of</strong> <strong>the</strong><br />

nature <strong>of</strong> collecting observational data under water (Difficult to collect, $$$, Time)<br />

Types <strong>of</strong> data available:<br />

– Sample collection, <strong>the</strong> acquisition <strong>of</strong> remotely sensed data (sidescan sonar, multibeam<br />

sonar, seismic), and observational video groundtruth data<br />

Common types <strong>of</strong> classification:<br />

By single variable<br />

– Depth<br />

– Substrate<br />

Image classification techniques:<br />

– Spatial analysis<br />

• Spatial filtering<br />

• Digital Elevation Model (DEM) derivatives (slope, aspect, plan, pr<strong>of</strong>ile)<br />

Previous work on <strong>the</strong> Oregon seafloor Conducted @ Heceta Bank ( Nasby-Lucas et<br />

al., 2002; Whitmire, 2003).<br />

July 17 th , 2006 MS Thesis Defense

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