Physically-based interactive bi-scale material design
Physically-based interactive bi-scale material design
复制标题
DOI：
10.1145/2024156.2024179
复制
发表时间：
2011-12
期刊：
影响因子：
--
通讯作者：
Hongzhi Wu;Julie Dorsey;H. Rushmeier
中科院分区：
文献类型：
--
作者：
Hongzhi Wu;Julie Dorsey;H. Rushmeier
我们提出了第一个基于物理的交互系统，通过对小尺度几何和材料的操作，一致地促进不同尺度的外观设计。我们系统的核心是一种新颖的反射过滤算法，它通过利用渲染问题的矩阵公式中的双向可见正态分布函数和预旋转 BRDF 的低阶结构，从小尺度细节快速计算大尺度外观。我们的算法比真实方法快三个数量级。我们通过分析和测量的 BRDF 演示了不同小规模几何体的各种编辑结果。此外，我们还展示了我们的系统在外观的物理实现以及使用非常稀疏的测量对现实世界材料进行建模的应用。
We present the first physically-based interactive system to facilitate the appearance design at different scales consistently, through manipulations of both small-scale geometry and materials. The core of our system is a novel reflectance filtering algorithm, which rapidly computes the large-scale appearance from small-scale details, by exploiting the low-rank structures of the Bidirectional Visible Normal Distribution Function and pre-rotated BRDFs in the matrix formulation of our rendering problem. Our algorithm is three orders of magnitude faster than a ground-truth method. We demonstrate various editing results of different small-scale geometry with analytical and measured BRDFs. In addition, we show the applications of our system to physical realization of appearance, as well as modeling of real-world materials using very sparse measurements.