We have developed and patented a system for Underwater Hyperspectral Imaging (UHI), in which statistical methods are employed to correct for the inherent optical properties of the seawater column.
Reflectance data are noise-filtered, enhanced and geo-corrected to produce hyperspectral maps. Using a library of spectral fingerprints, we can then identify OOI and automatically map large seafloor areas to reveal their coverage and distribution.
Our UHI is an underwater push-broom scanner pointed perpendicular (90°) towards the sea floor and towed by an ROV, along with a rig of external lights. Reflectance data are recorded in lines perpendicular to the ROV’s travelling direction, as the light bounces back from the seabed and hits the scanner.