Interactive multi-view video adaptation for 3DTV

This paper presents the descriptions related to user's preferences for multi-view video presentation, which can be utilized in MPEG-21 digital item adaptation. Our description tools support the functionalities for presentation preferences and terminal capabilities. The description of presentation preferences supports user's preference for the view presentation such as view selection, 3D depth adjustment, and special visual effects as well as the multi-view camera geometry conversion. Furthermore, the description of terminal capabilities supports capabilities for various display devices. Therefore, users can enjoy among monoscopic, stereoscopic, and multiscopic video they prefer. The syntax of the descriptions is represented in XML (eXtensible Markup Language) schema. We offer an interactive communication between DIA server and client through these descriptions related to user's preferences. Their feasibility has been examined and verified in our experiments, where test sequences are adapted by view preferences.