STUDY ON THE OBSERVATION METHOD OF WAVE RUN-UP HEIGHT BASED ON VIDEO FRAME ANALYSIS

Abstract

 It is difficult to tell the difference between the background and the wave splash in the rough weather, since both of splash and cloud is gray. In this study, we proposed a method that can analyze time series of maximum wave run-up heights automatically from the video frame instead of reading the maximum wave run-up heights respectively by measuring the video images. As a result, the calculated run up heights seems accurate since it draws a smooth parabola with respect to time. It is confirmed that time series of wave run-up height can be automatically obtained including the characteristic of spatial distribution of wave run-ups in this method.