Abstract
A measurement system of wave height distribution using visualized image data has been developed. The light scattering of water and air are usually different, and the difference is obvious when small bubbles or tracer particles are in water. The position of free surface is identified as the boundary of bright and dark part of laser sheet which is given under the free surface.
Wave height distribution around high speed craft was measured in circulating water channel. The measurement was much easier than that by conventional equipments.
