期刊
AQUATIC LIVING RESOURCES
卷 13, 期 5, 页码 297-303出版社
GAUTHIER-VILLARS/EDITIONS ELSEVIER
DOI: 10.1016/S0990-7440(00)01079-2
关键词
horizontally scanning sonar; fish detection; image analysis; single echo detection
Hydroacoustic split-beam techniques have been applied to enumerate salmon migrating in the river Tana (northern Norway) during the summers 1998 and 1999. Analysing data by single echo detection and tracking was difficult. Missing echoes in tracks from fish, combined with noise in the output from the single echo detector was seen as reasons for this. An improved counting method is presented. Contours from moving targets are detected by image analysis. Then, detected single echoes within these contours are combined into tracks. This procedure reduces problems related to noise, and to tracking fish with few accepted single echoes. (C) 2000 Ifremer/CNRS/INRA/IRD/Cemagref/Editions scientifiques medicales Elsevier SAS.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据