He is an associate professor with RWTH Aachen University. His main research interests include computer vision and machine learning, in particular for multi-object detection and tracking. Over the years, he received several awards for his research work, including the CVPR Best Paper Award in 2007, the ICRA Best Vision Paper Award in 2009 and 2014, the U.V. Helava Award in 2012, and an ERC Starting Grant in 2012. He is a member of the IEEE.