In this paper we discussed about monitoring the traffic of freshwater sea route by mean of dynamic image understanding technology

in which multi vision sensor data amalgamation technology is used to capture the concerned areas of tracked ships. With real time collecting

processing

tracking

and analyzing the video flow

some important traffic information including speed

number of ships

and the density of the ship in route are automatically obtained. The captured ship images are analyzed to determine license plates and load of the tracked ships and to obtain some basic data useful for river management department’s decision making for management and planning. In addition

the surveillance area and object can be defined by users so that the system processing time is reduced while the ability to real time processing

reliability

and robustness are improved. Experimental results show that the system can realize tracking the ships stably

can capture and recognise the specified part of the ship.The accuracy rate of recognition is high

at last the system realizes calculating the tonnage.