Author(s): Issa Hansen; Tobias Kern; Beat Luthi; Salvador Pena-Haro

Linked Author(s):

Keywords: Flow; Discharge; Water level; Rainfall; Turbidity; Image processing; Measurement; Monitoring

Abstract: The aim of hydrometeorological stations is to provide reliable hydrological parameters in their related areas in real time using different measuring methods. Some of these parameters in streams are water level, flow velocity, discharge and rainfall. However, conventional measurement methods, reach their limits precisely then, as they often rely on a sensor that is not contactless. This study presents an innovative solution to estimate all parameters mentioned using one camera-system by implementing different image processing methods. Image-based flow measurement systems offer a flexible non-intrusive alternative with real time measurement. Unlike conventional measurement methods, the ratio of measurement signal to measurement noise is optimal, especially for extreme events. A camera-based discharge system developed by SEBA Hydrometrie and photrack AG, DischargeKeeper (DK), offers a continuous measurement of water level, velocity and discharge in real time. Furthermore, the images taken by the same DischargeKeeper cameras can be processed for rainfall measurement and water turbidity estimation. several case studies about the camera-based discharge, turbidity and rainfall measurement are presented in this paper. All case studies presented showed a very good applicability of image processing technologies for measuring various hydrological and water quality parameters.

DOI: https://doi.org/10.64697/978-90-835589-7-4_41WC-P2120-cd

Year: 2025