GEORECTIFIED SHORELINE IMAGES AT REHOBOTH BEACH

For 13-May-2008 18:25:35

MERGED TIME EXPOSURE IMAGE

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MERGED VARIANCE IMAGE

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To find the shoreline we take a weighted sum of the Timex and Variance.

A Mask is used to exclude from consideration area where we know the shoreline cannot be.

In addition, a responsive intensity stretch is used to increase the contrast around the surf zone.

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In each column the signal peak is found.

Where the signal drops below the average landward of the peak is defined as the shoreline.

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Here the resultant shoreline for this hour is drawn in red on the Timex image.