混合使用细节层次与基于图像渲染技术的大面积森林实时渲染算法研究*

描述了一个新的结合细节层次算法和基于图像渲染的森林渲染系统,平衡了基于图像的渲染方法在渲染质量上的不足与几何渲染方法在效率上的缺陷。提出了一种新的基于四叉树纹理拼图的替代物渲染加速算法,有效地提升了替代物创建与渲染速度。最后,在一个实际的室外场景漫游程序中的运行结果表明了该系统可以用较小的渲染代价获得很高的渲染质量。

Real time rendering of dense forest scene using hybrid LOD and IBR approach

This paper presented a novel hybrid rendering system for forest scene that solved the classic problem of degraded quality of image based representations at close distances by building an impostor rendering system on top of a full, geometry based, forest rendering system. This enabled almost imperceptible switching between the two representations. By using a novel texture atlas based impostor algorithm, achieved a considerable performance gain. This system was embedded in an real world natural scene simulation application for testing purpose. The results demonstrate this system capable of rendering dense forest with the visual realism of a high resolution geometry rendering system, but only at a fraction of the rendering cost.