Water level measurement from CCTV camera images using water gauge images taken at the time of low water level

Abstract

We will propose a new method of water level measurement using river monitoring images taken by the closed circuit television (CCTV). Our method is featured by the definition of the water measure model, which in advance we have built from an image taken at the time of low water level. Generally the correlation between the observation images and the water measure model is enough strong. Therefor the implementation based on the method has provided robust measurement results through various observation conditions of light and water surface. Furthermore, since our method doesn't require high frame rate, the measurement can be stable by even use of night low rate video images.