CERTIFICATE OF PARTICIPATION The Organizing Committee of the 2nd International Conference on Embedded Systems and Artificial Intelligence (ESAI'21) held on April 01-02, 2021 at ENSA, Fez, Morocco, certifies that Authors: Zoheir Mentouri, Hakim Doghmane, Kaddour Gherfi, Rachid Zghdoudi and Hocine Bourouba Have Attended and presented a paper entitled: “ Tool combination for the description of steel surface image and defect classification” GENERAL CHAIR Hassan SATORI GENERAL CHAIR Nabil EL AKKAD