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A hybrid (Monte Carlo/deterministic) approach for multi-dimensional radiation transport

机译:多维辐射传输的混合(蒙特卡洛/确定性)方法

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摘要

A novel hybrid Monte Carlo transport scheme is demonstrated in a scene with solar illumination, scattering and absorbing 2D atmosphere, a textured reflecting mountain, and a small detector located in the sky (mounted on a satellite or a airplane). It uses a deterministic approximation of an adjoint transport solution to reduce variance, computed quickly by ignoring atmospheric interactions. This allows significant variance and computational cost reductions when the atmospheric scattering and absorption coefficient are small. When combined with an atmospheric photon-redirection scheme, significant variance reduction (equivalently acceleration) is achieved in the presence of atmospheric interactions.
机译:一种新颖的混合蒙特卡洛运输方案在一个场景中得到了演示,该场景具有太阳光照,散射和吸收2D大气,纹理反射的山脉以及位于天空中的小型探测器(安装在卫星或飞机上)。它使用伴随输运解决方案的确定性近似来减少方差,这种忽略是通过忽略大气相互作用来快速计算的。当大气散射和吸收系数小时,这可以显着降低方差并降低计算成本。当与大气光子重定向方案结合使用时,在存在大气相互作用的情况下,可以实现显着的方差减小(等效为加速度)。

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