Friday, August 15, 2014

Kite topographic mapping - Sapelo Island, Georgia

(Above and below) In May, my GEO 721 field class traveled to Sapelo Island Georgia to try out kite photography in the coastal environment. We were using a Canon Powershot camera for video and still photography.  For an idea of what our kite looks like visit the web page for Allsop Helikites. The view above is looking north on Nannygoat Beach, just above the beach entrance off Old Beach Road.
We are using Photomodeler software to create topographic maps derived from photos and video.  The image above was processed in Photomodeler using stills from the video at selected intervals. Because of high wind speeds on the day we flew the kite, our camera mount did not stay in position and we ended up with less than desirable oblique angle photos.  However, reconstructing the topography from the image was still feasible.

Below is the raw video of our flight. We stabilized segments of the video using ProDrenalin software before structure-from-motion reconstruction.