Innovative system of counting eels in automatic counting system by vision
Counting eels by continuous image analysis on a run-up ramp. Automatically measures the number and size of eels and elvers.
This new solution brings many advantages :
No fish handling
No human intervention for counting
Alarm in case of migration peak
Counting cost divided by 5
Continuous functioning
Current context
The European eel is a threatened heritage speciesmenacée.
The European Union has set up the Eel Management Plan (EMP), which designates some eel index rivers in which counting operations are carried out.
The eel populations present in these index rivers are monitored during the different stages of their life.
The goal is to obtain accurate data on the quantities of glass eels returning to the rivers.
Technique de comptage actuelle :
Trapping : risks of contagion between the fishes, risk of poaching, obligation to come and empty the trap several times a week, manual counting by staff.
Installation example
The system is grafted on an existing eel ramp (Fish Pass type).
Solution description
The eels are filmed at the exit of the ramp (possibility of viewing the films at a distance)
The images are processed by a Deep Learning program that counts the eels
Images and treatment results are stored in a database
The processed data is available on an online platform in a format that is easy to interpret and use
The only intervention necessary for a good operation is a weekly cleaning of the chute
Possibility of piloting a trap for detailed biometry
Possibility to control 5 times more rivers than the number of index rivers, at the same cost