Accurate and reliable observations of underwater structures and environments are vital for the aquaculture industry.
Tritonia Scientific uses the technique of 3D photogrammetry to combine photos or videos into 3D, highly accurate visual computer models.
The surveys are planned together with clients to meet the specific requirements of inspections and Tritonia Scientific can integrate data obtained from divers, ROVs, AUVs, sidescan sonar and aerial drones.
Tritonia Scientific makes the water disappear virtually, producing clear visibility even in turbid or low-light conditions.
The models visually expose structures or environments that are not possible to see using traditional methods, producing permanent records that can be continuously assessed and used for whatever the client needs.
A georeferenced photogrammetry model of a 150m2 section of seabed produced where in-situ water clarity was 1-2m.
3D photogrammetry survey of the seabed being performed by a diver in low visibility.
The models generate accurate and dependable data giving confidence for important management decisions and regulatory reporting. Precision and accuracy achieved using:
High-end through-water GPS systems for georeferencing;
Lasers or delineated markers for scaling and orientation; and
Salinity-corrected pressure sensors for depth measurement.
Beyond the initial survey requirements, Tritonia Scientific’s clients have found additional advantages of the models, including exact positioning as to where environmental samples, such as seabed cores, are taken or where invasive species have been identified during biosecurity surveys.
Precise changes can be identified using comparison software on subsequent models which means that fewer surveys are needed to show what is happening over time.
Low-tide aerial drone surveys can produce photogrammetric maps of broad-scale intertidal aquaculture resources such as oyster farms. These orthomosaic models display both location and shore elevation information.