A Ray Tracing Method of Splat-Based Surface Using Height Difference Intersection
CAI Peng;SHI Ping;FAN Yueyuan;Aeronautical Engineering Institute, Jiangsu Aviation Technical College;Zhenjiang Key Laboratory of UAV Application Technology, Jiangsu Aviation Technical College;
The main drawbacks of current ray tracing methods for splat-based surface are coarse rendering effects in the parts of silhouettes and sharp features. A ray tracing method for splat-based surface is proposed based on the high computation function defined by blending projective distances between the point of ray and the corresponding splats. And the height difference is used as step length to compute iteratively intersection. The height difference function is closed to geometric features of splat-based surface. Experiment results show that the method has good rendering quality in the parts of silhouettes and sharp features, and high convergence rate as well as low computation cost.