Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Totland, Bjørn"
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A PC-based echo integrator system appliable for school structure analyzis
Floen, Svein; Totland, Bjørn; Øvredal, Jan Tore; Misund, Ole Arve (ICES CM Documents;1991/B:43, Working paper, 1991)A low cost system for integration of echo signals on a PC has been developed. The system calculates the area backscattering strength in surface and bottom layers, and is designed both for the purpose of conventional ... -
Automatic recording of fish heart rate on a personal computer
Floen, Svein; Totland, Bjørn; Øvredal, Jan Tore (ICES CM Documents;1988/B:34, Working paper, 1988)From acoustic tags operated into fish in a closed system, the heartbeat signals are sent via underwater telemetry and counted on a personal computer. The computer removes false pulses caused by noise, and calculates the ... -
Automatic species recognition, length measurement and weight determination, using the CatchMeter computer vision system
Svellingen, Cato; Totland, Bjørn; White, Darren; Øvredal, Jan Tore (ICES CM documents, Working paper, 2006)The collection of biological data on species composition and individual length and weight of specimen has always been an important part of fisheries research. Traditionally, the collected information has been recorded on ... -
Computerbased detection of schools for counting, quantification of size and swimming behavior by the SIMRAD SA950 sonar
Totland, Bjørn; Misund, Ole Arve (ICES CM Documents;1993/B:17, Working paper, 1993)As a help in stock assessment of pelagic, schooling fish a software for detection of schools and quantification of their size and swimming behaviour by a high resolution sonar has been developed. The system reads the ... -
PC-based echo integration system for fish behaviour studies
Floen, Svein; Totland, Bjørn; Øvredal, Jan Tore (ICES CM Documents;1988/B:35, Working paper, 1988)An echo integration system presenting the distribution and vertical and horizontal movements of fish in net pens, is described. The system can be configured to multiplex up to 16 transducers sequentially. The number of ...