Overtopping Wave Detection based on Wave Contour Measurement

Abstract

The overtopping wave which is high wave exceeding breakwaters causes damage to a coast area. In this paper, we describe a novel detection method of the overtopping wave and other high wave from a video sequence of a coastal camera. This detection is performed directly by measuring wave contour in each image using Active Contour Models and by tracking the contour. Since our method measures and tracks the wave contour, it has the following advantages: 1) it is robust to other moving objects; 2) it can be applied to occurrence prediction of overtopping wave. In experiments using real video sequences including both of typhoon approaching and tranquil scenes, we confirmed the effectiveness of our method.