FN Archimer Export Format PT J TI Spatial Statistics of Objects in 3-D Sonar Images: Application to Fisheries Acoustics BT AF LEFORT, Riwal FABLET, Ronan BERGER, Laurent BOUCHER, JM AS 1:1,2;2:2;3:1;4:2; FF 1:PDG-RBE-STH-LTH;2:;3:PDG-IMN-NSE-AS;4:; C1 IFREMER, F-29280 Plouzane, France. Telecom Bretagne, F-29280 Plouzane, France. C2 IFREMER, FRANCE TELECOM BRETAGNE, FRANCE UBO, FRANCE SI BREST SE PDG-RBE-STH-LTH PDG-IMN-NSE-AS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 1.82 TC 2 UR https://archimer.ifremer.fr/doc/00056/16769/14270.pdf LA English DT Article CR CLASS 2008 BO Thalassa DE ;Fisheries acoustics;multibeam sensor;object patterns in images;point processes;spatial statistics AB In this letter, we address the characterization of objects in 3-D sonar images of the water column obtained by a multibeam echo sounder. Compared with classic 2-D images from a monobeam echo sounder, these 3-D images provide finer scale observation of the pelagic biomasses and new tools to characterize 3-D distributions. By viewing object patterns as realizations of spatial point processes, we investigate descriptive spatial statistics. This method is then applied to 3-D fisheries acoustics data set for characterization of the distribution of pelagic fish schools. Reported experiments illustrate the relevance of the proposed descriptors. The comparison of our method with 2-D sonar data analysis further demonstrates the information gain from using 3-D sonar imagery. PY 2012 PD JAN SO Ieee Geoscience And Remote Sensing Letters SN 1545-598X PU Ieee-inst Electrical Electronics Engineers Inc VL 9 IS 1 UT 000298380800012 BP 56 EP 59 DI 10.1109/LGRS.2011.2160328 ID 16769 ER EF