On September 4, 2026, Mr. Christian Kunert successfully defended his dissertation titled "Environment Reconstruction for Mediated Reality Visualization." The work deals with reconstructing geometry and lighting information from real-world environments and using the captured data for visualization purposes. This allows objects to be removed from camera images and new objects to be inserted. For this purpose, various methods from the areas of voxel reconstruction, image-based lighting, monocular depth estimation, and 3D Gaussian splatting were examined.