Hyperspectral Imaging

Hyperspectral Imaging is a remote sensing method in which spectral information is used to identify Objects Of Interest (OOI).

Hyperspectral means: The spectral resolution of captured data goes far beyond RGB and the human eye. As a result, very precise object detection and classification can be automatically performed. This already has wide applications from airborne platforms.

Underwater Hyperspectral ImagingROV-Pic-trans

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.

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.

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.

Hyperspectral image emphasizing particular benthic species.
UHI reflectance data are processed into hyperspectral images. Above, a particular benthic species is detected and highlighted to show its distribution.

Environmental concerns

Requirements for detailed habitat- and organism mapping are continuously tightened. An important goal is to monitor changes to the conditions of certain species and habitats over time; to assess biological impact of subsea operations and develop more viable and environment-friendly procedures.

Compared to current methods, Ecotone UHI represents a time-saving and cost effective solution to these concerns. It is also more precise, and does not depend on the subjective considerations of each individual operator.

Questions or suggestions about Ecotone UHI or related technology?
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