Antithetic sampling for Monte Carlo differentiable rendering
Antithetic sampling for Monte Carlo differentiable rendering
复制标题
蒙特卡罗可微分渲染的对偶采样
DOI:
10.1145/3450626.3459783
复制
发表时间:
2021
影响因子:
6.2
通讯作者:
Zhao, Shuang
中科院分区:
文献类型:
--
作者:
Zhang, Cheng;Dong, Zhao;Doggett, Michael;Zhao, Shuang
Stochastic sampling of light transport paths is key to Monte Carlo forward rendering, and previous studies have led to mature techniques capable of drawing high-contribution light paths in complex scenes. These sampling techniques have also been applied to differentiable rendering.In this paper, we demonstrate that path sampling techniques developed for forward rendering can become inefficient for differentiable rendering of glossy materials---especially when estimating derivatives with respect to global scene geometries. To address this problem, we introduceantithetic samplingof BSDFs and light-transport paths, allowing significantly faster convergence and can be easily integrated into existing differentiable rendering pipelines. We validate our method by comparing our derivative estimates to those generated with existing unbiased techniques. Further, we demonstrate the effectiveness of our technique by providing equal-quality and equal-time comparisons with existing sampling methods.
DOI:
10.1145/2766997
发表时间:
2015
期刊:
ACM Transactions on Graphics (TOG)
影响因子:
--
作者:
M. Kettunen;Marco Manzi;M. Aittala;J. Lehtinen;F. Durand;Matthias Zwicker
通讯作者:
Matthias Zwicker
DOI:
10.1017/s0305004100031467
发表时间:
1956
影响因子:
0.8
作者:
J. Hammersley;J. Mauldon
通讯作者:
J. Mauldon
影响因子:
2.5
作者:
Kartic Subr;D. Nowrouzezahrai;Wojciech Jarosz;J. Kautz;Kenny Mitchell
通讯作者:
Kenny Mitchell