圖書典藏及影音數位平台

本計畫於稜角水位站進行攝影量測系統量測河川表面流速及流量之作業，並依據觀測站現地條件調整影像量測系統之硬體設施與軟體參數，使其達到最佳化觀測能力。使用顆粒影像流速法(Particle Image Velocity, PIV及顆粒追蹤流速法(Particle Trace Velocimetry, PTV)量測河川表面流速。再透過指標法及機率流速分佈理論求得河川平均流速並計算其流量，並比較影像量測結果與現行量測方式之結果。

The water stage station called Leng-Jiao station was chosen as the study site in this project. Surface Velocity and Discharge Measurement in the Leng-Jiao station using a Three-dimensional Imaging Technology. For the best observation capability, the hardware facilities were adjusted according to the in-situ conditions. Then could be obtained using the particle image velocimetry (PIV) and particle tracking velocimetry (PTV) methods. Further, the mean velocity and flow discharge of the river could be estimated through the index-velocity method and entropy-based theory that describes the probability distribution of velocity. The results from the photogrammetry measurement system and the conventional approach were carefully compared and discussed.