CWI focused on standards for three-dimensional video and on standards for the quality experienced by users, participating in the following standardisation bodies and groups:
For quality of experience standards, CWI is working on multi-party video conferencing, trying to understand which factors determine the user experience, how does latency affect a video conversation, and what are thresholds for a good user experience. In recent years the results of the work have already been used by the International Telecommunication Union (ITU), a standardisation body of the United Nations responsible for information and communication technologies For some applications, such as remote medical consultation, virtual classrooms, virtual museum visits or videoconferencing, communication via three-dimensional video would be superior to the traditionally used two-dimensional video. But to make three-dimensional video communication work, many scientific problems must be solved: What information is absolutely necessary to transmit and what information can be omitted for practical reasons? How to ensure that video communication can take place in real time? How to support all kinds of configurations and cameras? How to guarantee a rich user experience?
CWI created compression algorithms that make the amount of data that needs to be transmitted much smaller. The work has been used by MPEG, the Moving Picture Experts Group, to benchmark computer programs, also called codecs, from various technology companies for encoding and decoding data streams. The compression algorithms were the starting point of the Point Cloud Compression technologies, VPCC and GPCC, that were ultimately chosen by MPEG as the standards for immersive media coding. “Contributing to the development of standards fits perfectly in CWI’s mission”, says Cesar. “We have no commercial interest and we can often work on a topic much longer than commercial institutions can.”