Measurement of the flood discharge of a small-sized river using an existing digital video recording system
Journal of Hydro-environment Research 5 巻 4 号
313-321 頁
2011 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Measurement of the flood discharge of a small-sized river using an existing digital video recording system
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| 作成者 |
Fujita Ichiro
Tsutsumi Shiho
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| 収録物名 |
Journal of Hydro-environment Research
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| 巻 | 5 |
| 号 | 4 |
| 開始ページ | 313 |
| 終了ページ | 321 |
| 抄録 |
In this study, a closed-circuit television (CCTV) system, installed for surveillance purposes, is utilized to measure the flow rate during a flood. The procedure to determine both the angle and scale-factor of the camera is described. Then, image analysis techniques, namely the direct visual measurement method, Large-Scale PIV (LSPIV) and Space-Time Image Velocimetry (STIV), are applied to the video images recorded by the CCTV camera. The results of these methods and the conventional float measurement are compared. In addition, the accuracy of the respective methods is discussed. A set of low-quality video images of a flood during a thunderstorm that occurred under the dark ambient conditions (midnight) is analyzed using three image-based methods. The transition of the flow rate during the event is successfully estimated.
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| 著者キーワード |
LSPIV
STIV
Small-sized river
CCTV
River discharge measurement
Float method
Floating debris
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| NDC分類 |
建設工学・土木工学 [ 510 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Elsevier Science BV
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| 発行日 | 2011 |
| 権利情報 |
(c) 2011 International Association of Hydro-environment Engineering and Research, Asia Pacific Division. Published by Elsevier B.V. All rights reserved.
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1570-6443
[DOI] 10.1016/j.jher.2010.12.004
[NCID] AA1224925X
[DOI] http://dx.doi.org/10.1016/j.jher.2010.12.004
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