Real-time Polygon Subdivision Control Using SVM with CSF Filter

When rendering a 3D model represented by polygons, subdividing a greater number of polygons means that more details can be expressed. Unfortunately rendering a large number of polygons requires heavy calculation. It is therefore necessary to divide polygons appropriately using a tessellation procedure to reduce the rendering computation cost while maintaining visual quality. In this paper, we propose a real-time subdivision control method that utilizes a binary classification table pre-stored by a support sector machine (SVM) to choose one subdivision level from two options. The SVM takes the four features obtained in the real-time rendering procedure as input and performs a binary classification to determine whether a polygon should be subdivided or not. Our experimental results show that the proposed method reduces the rendering time by approximately 22.3% compared to subdividing all polygons.