Mathias Wien (Member, IEEE) received the Diploma and Dr.Ing. degrees from Rheinisch-Westfälische Technische Hochschule Aachen (RWTH Aachen University), Aachen, Germany, in 1997 and 2004, respectively. In 2018, he achieved the status of the Habilitation, which makes him an independent scientist in the field of visual media communication. He was with the Institut für Nachrichtentechnik, RWTH Aachen University (Head: Prof. Jens-Rainer Ohm), as a Researcher from 1997 to 2006 and a Senior Researcher and the Head of Administration from 2006 to 2018. Since July 2018, he has been with the Lehrstuhl für Bildverarbeitung, RWTH Aachen University (Head: Prof. Dorit Merhof), as a Senior Researcher, a Leader of the Visual Media Communication Group, and the Head of Administration. He also serves as the Conventor of ISO/IEC JTC1 AG5 “Visual Quality Assessment.” He has been an Active Contributor to VVC, HEVC, and H.264/AVC. He has participated and contributed to ITU-T VCEG, ISO/IEC MPEG, the Joint Video Team (JVT), the Joint Collaborative Team on Video Coding (JCT-VC), and the Joint Video Experts Team (JVET) of VCEG and ISO/IEC MPEG. He has served as a Coeditor of the Scalability Amendment to H.264/AVC (SVC). In the aforementioned standardization bodies, he has co-chaired and coordinated several ad hoc groups and tool and core experiments. He has published more than 60 scientific articles and conference papers in the area of video coding and has coauthored several patents in this area. He has further authored and coauthored more than 200 standardization documents. He has published the Springer textbook High Efficiency Video Coding: Coding Tools and Specification that fully covers Version 1 of HEVC. His research interests include image and video processing, immersive, space–frequency adaptive and scalable video compression, and robust video transmission. Dr. Wien is a member of the IEEE Signal Processing Society and the IEEE Circuits and Systems Society. He is also a member of IEEE Circuits and Systems Society Technical Committee Visual Signal Processing and Communications (CASS TC VSPC). He has co-organized and co-chaired special sessions at IEEE International Conference on Visual Communications and Image Processing (VCIP) and Picture Coding Symposium (PCS). He has co-organized and co-chaired the Grand Challenge on Video Compression Technology at IEEE International Conference on Image Processing (ICIP) 2017. He also serves as an Associate Editor for IEEE Transactions on Circuits and Systems for Video Technology and Signal Processing: Image Communication.