STUDY ON SIMPLIFICATION AND IMPROVEMENT OF IMAGE DISCHARGE MEASUREMENT: FOCUSING ON THE SIMPLIFICATION OF THE GEOMETRIC CORRECTION AND THE CREATION OF THE RATING CURVE

DOI
  • KAWAGISHI Kosuke
    東京理科大学大学院 創域理工学研究科社会基盤工学専攻
  • KASHIWADA Jin
    東京理科大学 創域理工学部社会基盤工学科／総合研究院マルチハザード都市防災研究拠点
  • OTSUKA Ryutaro
    東京理科大学大学院 創域理工学研究科社会基盤工学専攻
  • TANAKA Mamoru
    東京理科大学 創域理工学部社会基盤工学科
  • NIHEI Yasuo
    東京理科大学 創域理工学部社会基盤工学科／総合研究院マルチハザード都市防災研究拠点

Bibliographic Information

Other Title
  • 画像流量観測法の簡略化・高度化に関する検討 ～簡易幾何補正法と<i>H-Q</i>式作成法に着目して～

Description

<p> While a water level observation network is progressing, there is a shortage of river discharge data. This study aims to advance an image-based flow observation method that combines SfM (Structure from Motion) and STIV (Space-Time Image Velocimetry) as a simplified geometric correction technique to reduce survey load. We conducted field tests in the Ichinomiya River basin in Chiba Prefecture, and the accuracy of these observations was evaluated. Additionally, river discharge was calculated from construction-site cameras under huge flooding condition, and sensitivity analyses were performed by varying the periods of rising and falling water levels. The results indicated that during river floods, the discharge peak appeared before the water level peak, and subsequently, the discharge does not change even as the water level continued to rise. The necessary observational data to maintain the accuracy of the rating curve were also evaluated.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390021846534029824
  • DOI
    10.2208/jscejj.24-16154
  • ISSN
    24366021
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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