I work with Vittorio Ferrari on 3D reconstruction from a single image, 3D reconstruction from video, and human-machine collaboration for large scale image and video annotation. I received my PhD in 2012 from the University of Saarland under supervision of Prof. Dr.-Ing. Philipp Slusallek, working on real-time ray tracing and global illumination for commodity hardware. I did a postdoc (2012-2014) at INRIA Sophia Antipolis (France) under the supervision of George Drettakis. I worked on photo-realistic rendering in cooperation with Fredo Durand (MIT) and Ravi Ramamoorthi (UC Berkley). I joined Google in 2014 and worked on the Google's search engine until 2016.