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When investigating image processing methods according to the usage conditions of sonar for fishing and images of fish school, it is necessary to go to the fishing waters and record the images.

Therefore, JRC developed a system to record the signal received from the sonar on a personal computer, and reproduce the signal on the display of the sonar, so that the evaluation of the results of the changed image processing method can be performed without going to the fishing waters . This system independently can record the sonar signal, and simultaneously can record the external information related to the sonar signal, such as control signals, system status and position information.

This system can also be applied to research of the behavioral analysis of fish school and etc.

Toshimi Yamashita
Hideki Horiuchi
Yasuo Fukushima