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New Cubic Cross filter detector for multi beam data recorded with DIDSON acoustic camera
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SYSNO ASEP 0330233 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název New Cubic Cross filter detector for multi beam data recorded with DIDSON acoustic camera Tvůrce(i) Balk, H. (NO)
Lindem, T. (NO)
Kubečka, Jan (BC-A) RID, ORCIDZdroj.dok. Underwater acoustic measurements, Technologies & Results. - Heraklion : Foundation for Research & Technology, 2009 / Papadakis J. S. ; Bjorno L. - ISBN 978-960-98883-3-2 Rozsah stran s. 1461-1468 Poč.str. 8 s. Akce Underwater acoustic measurements, Technologies & Results Datum konání 21.06.2009-27.06.2009 Místo konání Nafplion Země GR - Řecko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. GR - Řecko Klíč. slova fish tracking ; fish detection Vědní obor RIV BI - Akustika a kmity CEP GA206/07/1392 GA ČR - Grantová agentura ČR CEZ AV0Z60170517 - HBU-Z, BC-A (2005-2011) Anotace Target detection in data from the DIDSON (dual-frequency identification sonar) is a challenge. Due to high frequency and many narrow beams, the system can take series of acoustic pictures of passing fish. The entire body can be seen, but are often blurred and unclear in individual pictures. It is only when series of pictures are played like a film one can see that the target actually is a swimming fish. Hence, a good target detector should not be based on individual frames, but on using series of pictures. The Cross filter detector was originally designed for single, dual and split beam systems, to detect targets under very low signal to noise ratio conditions. In order to operate on multi beam data, we have added an extra dimension to the detecting filters. This resulted in a detector that takes into account both the time, range, and width dimensions in the data during the detection process. Preliminary tests of cubic detector were performed with various parameter settings. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2010
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