Abstract
Recently, many researchers have paid attention to a technique called non-photorealistic rendering (NPR). In this paper, we propose a method for painterly rendering of water surface by making use of techniques developed for three-dimensional computer graphics. We focus on the non-photorealistic rendering of vortices that are one of the important phenomena observed in the water surface. Our method makes it possible to create animations of water surface including generation and extinction of the vortices. For NPR, it is very important to reflect the user's intention on the resulting animation. So, we develop a system using the proposed method so that the user can control the motion of the flow and the vortices. By using the proposed system, the user can create NPR animations of the water surface taking into account the water flow and the vortices.
