Deep Vision is a subsea vision system for identifying and measuring fish under water. A subsea camera unit attached to the trawl makes it possible to identify and measure fish in the sea without bringing the catch onboard the vessel. Deep Vision is an invaluable tool for marine researchers and a great technological leap towards more sustainable fisheries.
Deep Vision is the result of cutting edge computer vision technology and advanced image analysis techniques incorporated into robust and innovative subsea enclosures. The system is currently used for research purposes with the advantage of accurate sampling data from images made possible without bringing the fish onboard the vessel.
Under development is a system for use by commercial trawl fisheries where the Deep Vision can be programmed for species and length of desired catch and automatically sort the catch in the trawl based on this.
Deep Vision for research – Sustainable sampling
The commercial prototype of the Deep Vision system consists of a frame and camera unit attached to the trawl, the cod end open if desired so that the fish can swim through, saving valuable resources from being caught and discarded for research purposes.
During a haul all organisms passing through the trawl are lit up by LED lights and photographed by a stereo camera. The high definition images are analysed in the Deep Vision software for registration of species and semiautomatic length measurement. All images are logged with time and depth information which, correlated with GPS data, shows the exact position of the fish in the water column along the haul as shown in the figure below.
Deep Vision is available for sale and rental for research purposes and has been deployed on 14 cruises for a total of 113 hauls, including several cruises with the Norwegian Institute of Marine Research (IMR) in Bergen and the Horizon 2020 supported MINOUW project.
Benefits for research:
- Ethical and environmental fish sampling
- No need to bring the fish onboard the vessel and subsequently discard it
- Efficient and time-saving sampling from images instead of manually onboard the vessel
- More accurate stock assessment with information about where the fish was caught along the haul
- Support and complement interpretation of acoustic data where this is ambiguous
Deep Vision in commercial fisheries –Catch on Target
Deep Vision is under continuous development, the goal being a system that can automatically measure and classify different species so that digital information about the length and mix of species can be sent in real-time to the vessel. Combined with a sorting mechanism this will make it possible to program the system for desired species and size of your catch and automatically sort the fish in the trawl based on this information. This will optimise the catch composition and dramatically reduce the bycatch.
Historical data about the catch rate along the haul can also be analysed to better plan for future hauls. Deep Vision will be integrated with Scantrol’s iSYM symmetry control for advanced trawl control. Information from the log from the two systems will maximise the information the skipper will have available about the catch and trawl. Analysing these the skipper will be able to determine when and where the catch was best, how the trawl was positioned and behaved, the vessel speed at this moment, and the distribution of catch rate and species along the haul.
Benefits for trawl fisheries:
- Maximised catch efficiency
- Reduced bycatch
- Lower discard rates
- Better control with quotas
- More sustainable trawl fisheries
- Historical information available for planning of future hauls
Development and cooperation
A sister company of Scantrol AS, Scantrol Deep Vision AS is dedicated exclusively to the development of cutting-edge technological solutions for fish sampling and monitoring. The Deep Vision system is developed with close access to Scantrol’s extensive experience and know-how in monitoring and control systems for the marine industry, and in close cooperation with Institute for Marine Research (IMR) in Bergen.
Deep Vision has been tested on several of IMR’s vessels and is featured as part of their Centre for Research-based Innovation in Sustainable fish capture and Pre-processing technology (CRISP). The aim of CRISP is to bring together world-leading Norwegian companies that supply fishery technology and marine products with scientific research institutions in order to develop innovative technology and solutions for sustainable harvesting of marine resources.
The latest version of the Deep Vision system has been deployed on 14 cruises, three of them with IMR’s “G.O. Sars”, for a total of 113 hauls. Innovation Norway supports the development and implementation of the system on the research vessels of IMR by 2017.
Deep Vision is available for sale and rental. Please contact us for availability and a quotation for your project.
Developed in cooperation with:
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