RIVER MONITORING DEVICE, RIVER MONITORING METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a river monitoring device capable of more accurately measuring a water surface elevation at a monitoring spot, a river monitoring method and a program.SOLUTION: An another spot water level altitude acquisition part acquires a value of a first water surface elevation at a water level measurement spot where a water level measurement device has made a measurement from the water level measurement device installed at the another spot which is different from a monitoring spot at a river. An image acquisition part acquires a monitoring image at the monitoring spot at the river apart from the water level measurement spot which picks up at least the water surface and an object protruding from the water surface. A water surface elevation detection part identifies a detection area in the monitoring image of a second water surface elevation at the monitoring spot by using an estimated water surface elevation at the monitoring spot based on the first water surface elevation acquired from the water level measurement spot.SELECTED DRAWING: Figure 1