Space Technology Department, Tartu Observatory, University of Tartu, Tõravere, Estonia.
Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, Espoo, Finland.
PLoS One. 2022 Mar 4;17(3):e0263882. doi: 10.1371/journal.pone.0263882. eCollection 2022.
This paper describes the architecture and demonstrates the capabilities of a newly developed, physically-based imaging simulator environment called SISPO, developed for small solar system body fly-by and terrestrial planet surface mission simulations. The image simulator utilises the open-source 3-D visualisation system Blender and its Cycles rendering engine, which supports physically based rendering capabilities and procedural micropolygon displacement texture generation. The simulator concentrates on realistic surface rendering and has supplementary models to produce realistic dust- and gas-environment optical models for comets and active asteroids. The framework also includes tools to simulate the most common image aberrations, such as tangential and sagittal astigmatism, internal and external comatic aberration, and simple geometric distortions. The model framework's primary objective is to support small-body space mission design by allowing better simulations for characterisation of imaging instrument performance, assisting mission planning, and developing computer-vision algorithms. SISPO allows the simulation of trajectories, light parameters and camera's intrinsic parameters.
本文描述了一种新开发的基于物理的成像模拟器环境的架构，并展示了其功能，该环境名为 SISPO，专为小型太阳系天体飞越和类地行星表面任务模拟而开发。图像模拟器利用了开源的 3D 可视化系统 Blender 和其 Cycles 渲染引擎，该引擎支持基于物理的渲染功能和程序微多边形位移纹理生成。该模拟器专注于真实的表面渲染，并具有补充模型，可为彗星和活动小行星生成逼真的尘埃和气体环境光学模型。该框架还包括用于模拟最常见图像像差的工具，例如切线和弧矢像散、内部和外部彗差以及简单的几何变形。该模型框架的主要目标是通过更好地模拟成像仪器性能的特征，辅助任务规划和开发计算机视觉算法，来支持小天体空间任务设计。SISPO 允许模拟轨迹、光线参数和相机的固有参数。
