论文标题
近距离区域中的虚拟点发光方法
A Virtual Point Light Generation Method in Close-Range Area
论文作者
论文摘要
本文提出了一种用于采样虚拟点光（VPL）的新混合算法。场景的间接照明计算用于合理分布VPL。在生成VPL的过程中，我们根据相机位置和方向将场景分为两个部分。近距离部分：相机注意的部分。遥远的部分：相机不关注或很少注意的部分。对于近距离零件，我们使用基于补丁的VPL采样方法在近场区域的贴片上尽可能均匀地分布VPL；对于遥远的部分，我们使用稀疏的即时辐射度（IR）进行抽样。事实证明，与传统的多个即时辐射相比，与VPL代算法相比，本文提出的方法在VPL数量相同时可以大大提高最终结果图的质量；在相同的渲染质量下，渲染速度可以大大提高。
This paper proposes a new hybrid algorithm for sampling virtual point light (VPL). The indirect lighting calculation of the scene is used to distribute the VPL reasonably. In the process of generating VPL, we divide the scene into two parts according to the camera position and orientation. The close-range part: the part that the camera pays attention to. The distant-range part: the part that the camera does not pay attention to or rarely pays attention to. For the close-range part, we use a patch-based vPL sampling method to distribute the VPL as evenly as possible on the patch in the near-field area; for the distant-range part, we use sparse instant radiosity (IR) for sampling. It turns out that, in contrast to conventional multiple instant radiance Compared with the VPL generation algorithm, the method proposed in this paper can greatly improve the quality of the final result graph when the number of VPLs is the same; Under the same rendering quality, the rendering speed can be greatly improved.
