00000nam 2200000zi 4500 9.947230 CaOODSP 20250206151248 m o d f cr mn||||||||| 250121t20252025nsca ob f000 0 eng d 9780660753607 CaOODSP eng rda CaOODSP eng eng fre n-cn-ns ln----- Fs97-4/3300E-PDF Nozères, Claude, author. Comparison of Pennatula aculeata sea pen abundance at a fixed site over an extended period using machine learning, image annotation, and image cataloguing / Claude Nozères, Laurence H. De Clippele, Jinshan Xu, and Ellen Kenchington. Dartmouth, Nova Scotia : Ocean and Ecosystem Sciences Division, Maritimes Region, Fisheries and Oceans Canada, Bedford Institute of Oceanography, 2025. ©2025 1 online resource (iv, 34 pages) : illustrations (chiefly colour). text txt rdacontent computer c rdamedia online resource cr rdacarrier Canadian manuscript report of fisheries and aquatic sciences, 1488-5387 ; 3300 Includes bibliographical references (pages 33-34). "A benthic platform documented retraction behavior of Pennatula aculeata colonies in The Gully, Nova Scotia, Canada. The fixed site had 12,054 images taken every 30 min between October 2022 and July 2023. Three methods were used to quantify visible sea pens. A machine learning model using RootPainter was trained on cropped images of several colonies, with the areas classified as sea pens serving as a proxy for presences. The BIIGLE online platform was used to annotate one image per week, with colonies ranging from 10 to 52 per image. Finally, a catalogue with Adobe Lightroom was used to label 22 P. aculeata colonies individually, with 2 to 21 visible per cropped image. Similar values indicating presences over the months were produced across the three methods. Cataloguing required the most effort, though it was estimated to be faster than BIIGLE annotation and easier to produce counts than with RootPainter. Overall, RootPainter was preferred for its efficiency and Lightroom for its utility, while BIIGLE was not recommended because of the higher manual workload"--Abstract, page iv. Includes abstracts in English and French. Sea pens Counting Gully Marine Protected Area. Image analysis Data processing. Image processing Digital techniques. Pennatulides Comptage Nouvelle-Écosse Zone de protection marine du Gully. Analyse d'images Informatique. Traitement d'images Techniques numériques. Canada. Department of Fisheries and Oceans, issuing body. Bedford Institute of Oceanography, issuing body. Canadian manuscript report of fisheries and aquatic sciences ; 3300. (CaOODSP)9.505211 PDF 5.28 MB https://publications.gc.ca/collections/collection_2025/mpo-dfo/Fs97-4-3300-eng.pdf