Author Archives: Magnus Rogne Myklebost

Automatic net inspection project grant from FHF

Mohn Technology is pleased to receive 5MNOK grant from FHF – the Norwegian Seafood Research Fund to develop a new autonomous net inspection drone for the aquaculture industry.

The drone will be a new tool to help fish farmers inspect their net pens more often and effective to a lower cost than diving and conventional ROV based inspection. An autonomous underwater vehicle (AUV) is a very complex product, that will demand a lot from our developer team. Mechanical and cybernetics has to work hand in hand in order for the AUV to work efficiently and effective under difficult conditions.

The AUV will be battery powered without umbilical, to reduce the risk of entanglement in existing equipment in the facility. Navigation will be based on a mixture of machine vision, compass and IMUs (Inertial Measurement Unit). The customer will gain access to reports and status via a web portal.

We are really looking forward to start on this project, as it is both very interesting and fits our company profile well!

Many thanks to FHF for the trust and support!

Master thesis with UiB

Mohn Technology has in cooperation with UiB Department of Informatics and masters student Oda Inanna Klemetsdal Stene started a project regarding AI based image segmentation. Oda will work on creating a new machine vision tool for the fisheries industry that will increase profits and reduce waste. We are looking forward to the collaboration.

If you wish to write bachelor or masters thesis with us, please contact magnus (at) mohntechnology.no

New FRS camera in the water

NORCE Research has installed a new FRS camera in the Bolstad River. It was important to get the system up and running before the spring flooding due to snow melting.

The system was installed by NORCE field biologists, who bolted the durable stainless steel frame to a large boulder . The boulder was then moved to deeper waters. The frame / bracket is designed to withstand heavy impacts by objects that float down the river.

Pelagic fish project with IMR

Mohn Technology and the Norwegian Institute of Marine Research (IMR) are working together to create new tools to improve the accuracy of purse seine fisheries. The project consists of many technological advancements, and Mohn Technology will contribute with our machine vision and remote controlled vehicle knowledge.

The results will help the fishing industry increase their pre-catch knowledge about the fish and improve profits. The tools can also be used by researchers who wish to learn more about the pelagic fish population.

Two FRS pilot projects live

In a cooperation project with NORCE Research, we have delivered our two first pilot systems of the FRS cameras to BKK. BKK, who is interested in the local fish population and migration patterns, has installed the systems at two suitable fish ladders. We are looking forewards to working together with both BKK and NORCE to further develop the system and implement customer ideas and requirements.

AI based fish detection machine vision

Mohn Technology is continuously working on testing and improving our machine vision algorithms for our different camera systems. After we completed a prototype test of our FRS camera (Fish Research System) this winter with NORCE LFI at Byglandsfjord, we got new footage to test.

Machine vision is one of the most important aspects of the FRS camera, and high precision algorithms help us deliver the best possible results. The FRS allows the user to efficiently monitor underwater life with greatly reduced manual data processing efforts.

This version was trained on a small data set, but the results were pretty impressive. The machine vision algorithm detects fish that are hard to see manually (especially those inside the net).

The system provides both still images and video, which makes it easy to verify and classify the fish.

Theis particular setup, with a fishing net funneling fish past the FRS camera, is used by NORCE to research fish population in lakes and fjords. It is one of many ways to use the FRS camera to gather data about marine life.

Stereo camera accuracy testing with IMR

Mohn Technology is currently testing an underwater stereo camera system with Institute of Marine Research. The accuracy testing performed this time was done by comparing the distance between the white dots on a calibration bar to the camera based measurements. The distance between the dots is 596,4 mm, and most measurements had a margin of error around 0,5%

These kinds of tests are important to verify the hardware accuracy under different conditions and improve software. Underwater machine vision measurements are more complex due to the poor light and contrast. The underwater stereo camera is a compact version of what is used in the autonomous Fish Research System (FRS)

Autonomous wall / net tracking achieved

Mohn Technolgy is working on an autonomous net cleaning system. Early pool testing and development is done on a simplified prototype that has an umbilical for live tracking of the process. The autonomous properties can be transferred to future prototype versions even though they will differ greatly from this early version. Both the prototype and future vessel is battery powered.

The automatic wall tracking is possible by the use of an accurate IMU (Inertial measurement unit), a stereo camera and some clever programming.