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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
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    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.

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    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).

     

    Site Souston
    Souston Site

     

    Solution description

    Éléments de la solution 

  • 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
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    Anguille caméra

    Image captured by our camera
    Portail web

    Presentation of results in real time on the web portal

     

    In partnership with

    Logo Migradour          Logo EDF               Logo Agence de l'eau Adour-Garonne