“…For this reason, the study was directed towards exploring of how assess the value of rain, snow, fog, smoke, and dirt model add-ons for Unreal Engine® and Unity 3D® engines. All these add-ons introduce 'noise' in the simulation, which must be dealt with by the virtual sensor model (see Figure 1) to ensure the correctness of the behaviour prediction (Hospach et al, 2016), such as recognizing obstacles and deciding if and how to reroute the AVS. A main reason for prioritizing this 'category' of models is that, although many simulators come with weather models, currently used image data sets are recorded largely under good weather conditions (Cordts et al, 2016).…”