Perrot Yannick auteur aut IRD Brehmer Patrice auteur aut IRD Habasque Jérémie auteur aut IRD Roudaut Gildas auteur aut IRD Behagle Nolwenn auteur aut IRD Sarré A. auteur aut IRD Diogoul N. auteur aut IRD Lebourges Dhaussy Anne auteur aut IRD text conferencePaper eng text/pdf reformatted digital access Matecho is an automated processing method to extract information and perform echo-integration and fish shoal extraction from various scientific echo-sounder sources providing digital acoustic data on fisheries and aquatic ecosystem. The open-source initiative helps foster collaboration and technological transfer. Matecho supports various formats, such as the international standard format for the exchange of fisheries acoustics raw and edited data. The procedure allows the semiautomatic cleaning of echogram data and the application of automatic data filters, i.e., transient noise, attenuated signal and impulsive noise removal and background noise reduction. Echo-integration processing is executed for each depth layer and integrates their characteristics per elementary sampling unit. Sound scattered layers are automatically detected by segmentation from the echo-integrated echogram, and shoals are extracted according to an iterative process of aggregation of filtered echogram echoes that allows, in both cases, the calculation of the ad hoc parameters describing morphological, spatial location and acoustic characteristics of sound scattered layers and shoals. Matecho is open-source software for researchers and provides end users with a user-friendly, free executable program. specialized AFRIQUE DE L'OUEST ATLANTIQUE 040 122 ICAWA : International Conference AWA, 5., Lanzarote (ESP), 2018/04/17-20 150 Brehmer Patrice ed. edt IRD Diogoul N. collab. clb IRD Zenk C. collab. clb IRD Vareilles M. de collab. clb IRD Keenlyside N. collab. clb IRD Nascimento J.M. collab. clb IRD Ramos V. M. collab. clb IRD Sow B.A. collab. clb IRD Fock H. collab. clb IRD Schmidt J. collab. clb IRD Ekau W. collab. clb IRD Mbaye A. collab. clb IRD Fall. A. collab. clb IRD Monteiro I. collab. clb IRD Kouassi A.M. collab. clb IRD Silva O. collab. clb IRD Brochier Timothée collab. clb IRD Sall. M. collab. clb IRD Mayif M. collab. clb IRD Koné V. collab. clb IRD Gorgues Thomas collab. clb IRD Ferreira Santos C. collab. clb IRD Bamy I.L. collab. clb IRD Barry I. collab. clb IRD Sidibe M. collab. clb IRD Diadhou H. collab. clb IRD Dakar (SEN) SRFC/CSRP Marseille IRD 2019 https://www.documentation.ird.fr/hor/fdi:010078279 978-9553602-0-06 [F A010078243] https://www.documentation.ird.fr/hor/fdi:010078279 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers20-05/010078279.pdf IRD - Base Horizon / Pleins textes 2020-05-04 2025-12-10 fdi:010078279 fre