A RENDERING ALGORITHM FOR HYBRID SCENE REPRESENTATION

  • Tien, Yen (Ins. of Multimedia Engineering National Chiao Tung University) ;
  • Chou, Yun-Fung (Ins. of Multimedia Engineering National Chiao Tung University) ;
  • Shih, Zen-Chung (Dep. of Computer Science National Chiao Tung University)
  • Published : 2009.01.12

Abstract

In this paper, we discuss two fundamental issues of hybrid scene representation: constructing and rendering. A hybrid scene consists of triangular meshes and point-set models. Consider the maturity of modeling techniques of triangular meshes, we suggest that generate a point-set model from a triangular mesh might be an easier and more economical way. We improve stratified sampling by introducing the concept of priority. Our method has the flexibility that one may easily change the importance criteria by substituting priority functions. While many works were devoted to blend rendering results of point and triangle, our work tries to render point-set models and triangular meshes as individuals. We propose a novel way to eliminate depth occlusion artifacts and to texture a point-set model. Finally, we implement our rendering algorithm with the new features of the shader model 4.0 and turns out to be easily integrated with existing rendering techniques for triangular meshes.