Flow Measurement for Dynamic Behaviour of Heavy River Surface

This paper shows the monitoring system of dynamic state (flow speed and direction) of river surface by using video image processing. This system is designed for estimation of dynamical behaviour of heavy river at natural disasters. The state of speed and direction estimated continuously from differential image flames. By monitoring the dynamic state, it is possible to find dangerous area and the dangerousness, predict the second water disaster and inform them to people and local/prefectural governments.