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Vol. 32, No. 8(2), S&M2292

ISSN (print) 0914-4935
ISSN (online) 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 32, Number 11(1) (2020)
Copyright(C) MYU K.K.
pp. 3595-3606
S&M2361 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2020.2892
Published: November 10, 2020

Method for Measuring Length of Free-swimming Farmed Fry by 3D Monitoring [PDF]

Koji Abe, Koki Miyake, and Hitoshi Habe

(Received March 31, 2020; Accepted June 2, 2020)

Keywords: image processing, 3D monitoring, stereo camera, direct linear transformation, aquaculture

To monitor the continuous growth of farmed fry, we present an automated method for measuring the length of free-swimming fry in a small aquarium. The proposed method detects the frame where a swimming fish appears for the measurement in a movie and estimates the locations of its snout and caudal fin base from its shape characteristics. The length is measured as the distance between these two points in 3D space, whose 3D coordinates are obtained by the method of direct linear transformation. The performance of the proposed method was examined by applying it to 10 fish in each of six species, and the standard deviation of the error rates was less than 5%. In the best case, the mean value and standard deviation of the error rates were 6.6 and 1.7%, respectively.

Corresponding author: Koji Abe


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Cite this article
Koji Abe, Koki Miyake, and Hitoshi Habe, Method for Measuring Length of Free-swimming Farmed Fry by 3D Monitoring, Sens. Mater., Vol. 32, No. 11, 2020, p. 3595-3606.



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