格子傾斜モアレトポグラフィによる水位分布の計測と画像表示

抄録

Topographic measurement of water surface is essential to study wave motion. In order to measure simultaniously the whole area of wave surface, the inclined grid method of moire topography discriminating between rise and fall of water surface with high sensitivity is the most suitable technique.
As the results of experiments, the inclined grid method proved adequately fit for practical use with accuracy better than ±1%.
The digital image processing techniques of the moiré fringes data was developed to determine the quantities of the ups and downs of water surface, then the three-dimensional color image of the contour variation was obtained by using computer graphic techniques.
The topographic measurement and visualization system was applied to the wave motion in a wave generation device utilizing a resonant duct and the three-dimensional color images of its contour variation were obtained.