Nearshore Video Imaging System



Example of C0 (north) image
Three high resolution video cameras are mounted on the top of the 43 m tall (140 ft) FRF observation Tower. Camera C0 faces north, C1 faces offshore, and C2 faces south. Each image has GPP's (ground control points) which are used to determine the camera's orientation relative to the ground topography. The most noticeable GCP's are three disks from camera C0.

Example of C1 (offshore) image
This allows for a photogrammetric transformations of image coordinates to ground coordinates. Thus, time sequences of these images can be used to monitor changes in sand bar morphology or shoreline position and potentially other variables. Also, these cameras are used to collect data on horizontal distributions of wave-breaking and shoreline movement. One application of these systems is the imaging of the sandbar location as it effects wave breaking.

Example of C2 (south) image
C0 takes a snapshot at the top of the hour. At one minute past the hour a time exposure of 2000 frames (10 minutes) is taken.
C1 takes a snapshot at 15 minutes past the hour and a time exposure at 16 minutes past.
C2 takes a snapshot at 30 minutes past and a time exposure at 31minutes past.


This video technique was developed by Dr. Rob Holman of theCoastal Imaging Lab in the Oceanography Department of Oregon State University. Kent Hathaway is the FRF video expert

The images from yesterday and today are available to view and download. To access the videos, you will have to select a day (today or yesterday), a camera view (C0, C1, C2), a time, and image type (snapshot or time exposure often called timex).

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