音響カメラを用いた定置網内における魚群計測
書誌事項
- タイトル別名
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- Measurement Techniques of Fish in Set Net by Use of the Acoustic Camera
- オンキョウ カメラ オ モチイタ テイチアミ ナイ ニ オケル ギョグン ケイソク
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説明
Laboratory experiments and field surveys in a set net were conducted by use of the acoustic camera, DIDSON, as a device to observe behaviours of various fish species without an influence on them. As a result of laboratory experiments, it was shown that a frame rate of images taken by DIDSON peaked out when an observation distance was shorter than 5m, while the resolution of subject improved in proportion to a shortening of an observation distance and a frame rate improved in inverse proportion to it when a distance was longer than 5m. This may cause an image deformation of the moving subject at a shorter observation distance because DIDSON draws it by the interlace scan. As a result of observations in the set net under the optimized setting of DIDSON taking above results into consideration, it was possible to discriminate images of bluefin tuna from other species.
収録刊行物
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- 日本水産工学会誌
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日本水産工学会誌 54 (3), 197-201, 2017
日本水産工学会
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詳細情報 詳細情報について
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- CRID
- 1390001288095246208
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- NII論文ID
- 220000156767
- 130007540104
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- NII書誌ID
- AN10278554
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- ISSN
- 21897131
- 09167617
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- NDL書誌ID
- 028901170
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可