Abstract
In this study, we propose a technique to draw grass models as many as possible in real time. We reduce the number of polygons to draw using LOD (Level of Detail). LOD is a technique to switch the models with simplified ones like billboards. We can switch them with less detailed but more efficient models because the grass models are drawn in small size on monitor and it is not clear to recognize their structures on the long distance from the viewpoint. In addition, we apply the wind blow animation to the grass models. Therefore, we can draw the realistic grass field that has enough detail for background, even though we use simplified models to decrease the rendering costs.
