Flow measurements in sewer systems based on image analysis: automatic flow velocity algorithm

Discharges of combined sewer overflows (CSOs) and stormwater are recognized as an important source of environmental contamination. However, the harsh sewer environment and particular hydraulic conditions during rain events reduce the reliability of traditional flow measurement probes. An in situ system for sewer water flow monitoring based on video images was evaluated. Algorithm to determine water velocities was developed based on image-processing techniques. The image-based water velocity algorithm identifies surface features and measures their positions with respect to real world coordinates. A web-based user interface and a three-tier system architecture enable remote configuration of the cameras and the image-processing algorithms in order to calculate automatically flow velocity on-line. Results of investigations conducted in a CSO were presented. The system was found to measure reliably water velocities, thereby providing the means to understand particular hydraulic behaviors.


Published in:
Abstracts of the 7th International conference on sustainable techniques and strategies in urban water management (NOVATECH), 180
Presented at:
7th International conference on sustainable techniques and strategies in urban water management (NOVATECH), Lyon, France, June 27 - July 1st, 2010
Year:
2010
Publisher:
Lyon, France, GRAIE
Keywords:
Note:
Proceedings on CD
Laboratories:




 Record created 2010-08-03, last modified 2018-03-18

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