This image depicts topographic contours of Lady Elliot Island, including foliage, land surface, beaches and surrounding reef and ocean. The image was compiled from data acquired from a Riegl Q240i scanning laser mounted in an aircraft and flown at 500ft altitude. Data from successive transects along parallel north-south tracks is georectified using a GPS/INS system and stitched together using software known as Rapid Terrain Modeller. Horizontal pixel resolution in the final image is ~1m and vertical accuracy ~ 5cm. This project was funded by the ARC in a project led by Jason Middleton (UNSW) and Ken Melville (UCSD-SIO), and data was acquired and analysed by Luc Lenain and Ben Reineman.
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