WATER LEVEL MEASURING DEVICE, WATER LEVEL MEASURING METHOD AND WATER LEVEL MEASURING PROGRAM

摘要

In conventional water level measuring devices, there were instances where high precision water level measurement could not be performed when the surrounding environment changed due to season, time, weather, etc.　A water level measuring device (100) of the present invention is provided with an image identification unit (12) and a water level calculation unit (13). The image identification unit (12) identifies whether a region corresponding to an image for identification, which is an image of a region including a predetermined reference point for an acquired photographed image, is a water region or a non-water region, said identification being made on the basis of a plurality of water region images, which correspond to the surrounding environment affecting image identification, and a plurality of non-water region images corresponding to the surrounding environment. The water level calculation unit (13) calculates the water level in the photographed image on the basis of the identification results by the image identification unit (12) and a reference point water level value corresponding to the reference point.