Study on the Analyzing Method of Aerial Photograph Images of Flood Flows

洪水航拍图像分析方法研究

• 批准号: 07555161
• 负责人: UTAMI Tadashi
• 金额: $ 1.22万
• 依托单位: Wakayama University (1996-1997)Kyoto University (1995)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555161/
• 关键词: Aerial Photograph; Image Processing; Turbulence Structure; Flood Flow; Boil; Divergence; 洪水流写真観測; 画像処理; 洪水流表面流況; 渦; 複断面湾曲河道; 洪水流航空写真

1. Study on the Analyzing Method of Aerial Photograph Images of Flood Flows(1) The calibration method of an image scanner was developed.(2) The method was developed to correct the photograph images taken by the camera whose optical axis is not vertical.(3) The method was developed to eliminate the erroneous velocity vector data obtained by correlation analyses.(4) The optimum scales of correlation windows and detection windows were made clear.(5) The convenient method to measure surface velocities of the flood flows by the video camera was developed.2. Study on the large-scale structure of flood flows(1) Two kinds of typical sediment deposits were found around the main-channel boundaries of the Tone River. It was clarified by analyzing the aerial photographs that these deposits are related to the turbulence structure of the flood flows(2) The relationship between turbulence structure of the flood flow and the river-bed configurations was found to be strongly affected by unsteady characteristics of the flood flows.

1. 洪水流航空摄影图像分析方法的研究(1) 建立了图像扫描仪的标定方法。(2) 建立了对光轴不垂直的相机拍摄的摄影图像进行校正的方法。(3) 建立了消除相关分析得到的错误速度矢量数据的方法。(4) 明确了相关窗和探测窗的最佳尺度。(5) 开发了利用摄像机测量洪水流表面速度的简便方法。 2．洪水大尺度结构研究(1)在利根川主河道边界附近发现了两种典型沉积物。通过对航拍照片的分析，明确了这些沉积物与洪水的湍流结构有关。(2)洪水的湍流结构与河床形态之间的关系受洪水非定常特征的强烈影响。

项目成果

宇民正・上野鉄男: "複断面蛇行河道における洪水流況と土砂輸送" 水工学論文集. 第40巻. (1996)

Masaru Umi 和 Tetsuo Ueno：“多段蜿蜒河道中的洪水流态和泥沙输送”《水利工程杂志》第 40 卷（1996 年）。

Tadashi Utami and T.Ueno: "Flood Flow and Sediment Transport in Meandering Channel with Compound Cross-Section" Annual Journal of Hydraulic Engineering, JSCE. Vol.40. 933-938 (1996)

Tadashi Utami 和 T.Ueno：“复合断面曲流河道的洪水流动和泥沙输送”，水利工程学报，JSCE。

Mikio Hino, N.Kasagi, R.Kimura, M.Nishioka, A.Yasuhara.: Handbook of Flow Experiments. Asakura Publishing Corporations, 720 (1996)

Mikio Hino、N.Kasagi、R.Kimura、M.Nishioka、A.Yasuhara.：流动实验手册。

日野幹雄: "流体実験ハンドブック" 朝倉書店, 720 (1996)

日野干雄：《流体实验手册》朝仓书店，720（1996）

T.Utami, T.Ueno, R.Kinoshita: "Simultaneous Measurement of Surface Velocity Distributions and Bed Configurations under Flood Conditions" Environmental and Coastal Hydraulics (Proc.27th Congress of IAHR). B. 203-208 (1997)

T.Utami、T.Ueno、R.Kinoshita：“洪水条件下表面速度分布和河床构造的同步测量”环境和沿海水力学（IAHR 第 27 届大会论文）。