FISH COUNT CALCULATION METHOD, FISH COUNT CALCULATION PROGRAM, AND FISH COUNT CALCULATION DEVICE

Title:

FISH COUNT CALCULATION METHOD, FISH COUNT CALCULATION PROGRAM, AND FISH COUNT CALCULATION DEVICE

Document Type and Number:

WIPO Patent Application WO/2022/080407

Kind Code:

A1

Abstract:

In the present invention, an estimator for estimating the number of fish present in an underwater space is constructed by means of machine learning using, as teaching data, a plurality of data sets for learning that each include an echo image for learning, the echo image being based on received sound waves reflected by fish when sound waves are transmitted in an underwater space where fish are present, and the number of fish present in the underwater space in the echo image. The plurality of data sets for learning each include: an echo image for learning that is based on received sound waves reflected by fish when sound waves are transmitted in the underwater space where fish are present; and the number of fish present in the underwater space in the echo image. The estimator is used on an echo image generated on the basis of received sound waves reflected by an unknown number of fish present in the underwater space after transmitting sound waves in the underwater space, so as to calculate the number of said unknown number of fish present in the underwater space.

Inventors:

NISHIKAWA HARUKA (JP)
ISHIKAWA YOICHI (JP)
KUWATANI TATSU (JP)
MATSUOKA DAISUKE (JP)
SUGIYAMA DAISUKE (JP)
WATANABE YOSHITAKA (JP)

Application Number:

PCT/JP2021/037884

Publication Date:

April 21, 2022

Filing Date:

October 13, 2021

Export Citation:

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Assignee:

JAPAN AGENCY MARINE EARTH SCI (JP)

International Classes:

A01K61/95; G01S15/96; G06N20/00; G16Y10/15

Domestic Patent References:

WO2014207991A1

2014-12-31

Foreign References:

JP2019200175A	2019-11-21
JPH11296650A	1999-10-29
JP2020085609A	2020-06-04
JP2009213473A	2009-09-24

Other References:

ONITSUKA YUKI: "Development of fish school behavior simulator in running water", RIVER MAINTENANCE FUND SUBSIDY PROJECT, GRADUATE SCHOOL OF ENGINEERING, KYUSHU INSTITUTE OF TECHNOLOGY, 25 March 2013 (2013-03-25), XP055921856, Retrieved from the Internet