用新方法高效生成复杂场景的细节层次外观，保真度更高且渲染快。
Efficient Scene Appearance Aggregation for Level-of-Detail Rendering
- 提出基于体素的聚合双向散射函数（ABSDF）统一表征场景外观。
- 在保持高保真度的同时，内存与渲染开销与原场景复杂度无关。
- 适合需要快速渲染高细节场景的应用，如游戏、虚拟现实。
为任意3D场景创建保留外观的层次细节（LoD）表示是一个挑战性问题。场景外观是几何与材质模型的复杂组合，并因场景元素的空间布局产生相关性。本文提出一种新的体积化表示方法，用于聚合复杂场景的外观，并构建高效的LoD生成与渲染流程。核心是聚合双向散射分布函数（ABSDF），总结一个体素内所有表面的远场外观。我们提出了ABSDF的闭式分解，可处理空间和方向变化的材质参数。解决了体素内部及跨场景部分间的相关性难题。本方法能忠实还原外观，在质量上优于现有场景滤波方法，且渲染天然高效。所提表示的内存占用与渲染成本独立于原始场景复杂度。
原文摘要 · Abstract (English)
Creating an appearance-preserving level-of-detail (LoD) representation for arbitrary 3D scenes is a challenging problem. The appearance of a scene is an intricate combination of both geometry and material models, and is further complicated by correlation due to the spatial configuration of scene elements. We present a novel volumetric representation for the aggregated appearance of complex scenes and an efficient pipeline for LoD generation and rendering. The core of our representation is the Aggregated Bidirectional Scattering Distribution Function (ABSDF) that summarizes the far-field appearance of all surfaces inside a voxel. We propose a closed-form factorization of the ABSDF that accounts for spatially varying and orientation-varying material parameters. We tackle the challenge of capturing the correlation existing locally within a voxel and globally across different parts of the scene. Our method faithfully reproduces appearance and achieves higher quality than existing scene filtering methods while being inherently efficient to render. The memory footprint and rendering cost of our representation are independent of the original scene complexity.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。