mitransient is a light transport simulation tool that extends Mitsuba 3 with support for time-resolved simulations. In essence, mitransient extends conventional rendering by adding a temporal dimension which accounts for the time of flight of light. This allows rapid prototyping of novel transient imaging systems without the need of costly or difficult-to-operate hardware. Our code is trivially easy to install through pip, and consists of Python modules that can run both in CPU and GPU by leveraging the JIT capabilities of Mitsuba 3. It provides physically-based simulations of complex phenomena, including a wide variety of realistic materials and participating media such as fog or smoke. In addition, we extend Mitsuba 3's functionality to support time-resolved polarization tracking of light and transient differentiable rendering. Finally, we also include tools that simplify the use of our simulations for non-line-of-sight imaging, enabling realistic scene setups with capture noise to be simulated in just seconds of minutes. Altogether, we hope that mitransient will support the research community in developing novel algorithms for transient imaging.

翻译：mitransient是一个光传输模拟工具，它扩展了Mitsuba 3以支持时间分辨模拟。本质上，mitransient通过增加一个考虑光飞行时间的时间维度，扩展了传统渲染方法。这使得无需昂贵或难以操作的硬件即可快速原型化新型瞬态成像系统。我们的代码可通过pip轻松安装，由Python模块组成，利用Mitsuba 3的即时编译能力，可在CPU和GPU上运行。它提供基于物理的复杂现象模拟，包括多种真实材料及参与介质（如雾或烟）。此外，我们扩展了Mitsuba 3的功能，以支持光的时间分辨偏振跟踪和瞬态可微渲染。最后，我们还提供了简化模拟用于非视距成像的工具，可在数秒至数分钟内模拟包含捕获噪声的真实场景设置。总之，我们希望mitransient能支持研究社区开发新型瞬态成像算法。