Abstract
In three-dimensional computer graphics, a set of polygons are generally used to represent a virtual space. In this situation, if the finer representation for the virtual space is required, the number of polygons constituting the virtual space is increasing, which gets rendering speed decreasing. In addition, to download through the Internet such a large number of polygons cost much communication time. To solve these problems, we use relief textures, textures with depth information, as distant view billboards in the walk-through system on a network.
