Adding atmospheric scattering and transparency to a deferred rendering pipeline for camera based ADAS tests

This paper describes the implementation of a real-time global illumination model (atmospheric scattering and transparency) based on deferred rendering for the realization of virtual test drives used for the evaluation of camera based ADAS. Atmospheric scattering and transparent objects (e.g. windows) contribute to a realistic visualization of outdoor street scenes. However, both are not considered in the basic deferred rendering pipeline. To create an adequate adaption, the in ̄uence of the atmospheric scattering on transparent objects has to be considered. This work compares several techniques for the integration of transparency in the deferred rendering global illumination model. The realization of an A-Buffer implemented as Linked List provides the best results concerning the image quality. Weighted Blended Order-Independent Transparency also achieves adequate results. Inferred Lighting is inapplicable for the given use case.