Peer-to-peer multicast live video streaming with interactive virtual pan/tilt/zoom functionality

Video streaming with virtual pan/tilt/zoom functionality allows the viewer to watch arbitrary regions of a high-spatial-resolution scene. In our proposed system, the user controls his region-of-interest (ROI) interactively during the streaming session. The relevant portion of the scene is rendered on his screen immediately. An additional thumbnail overview aids his navigation. We design a peer-to-peer (P2P) multicast live video streaming system to provide the control of interactive region-of-interest (IROI) to large populations of viewers while exploiting the overlap of ROIs for efficient and scalable delivery. Our P2P overlay is altered on-the-fly in a distributed manner with the changing ROIs of the peers. The main challenges for such a system are posed by the stringent latency constraint, the churn in the ROIs of peers and the limited bandwidth at the server hosting the IROI video session. Experimental results with a network simulator indicate that the delivered quality is close to...

• Type: Conference
• Year: 2008
• Where: ICIP
• Authors: Aditya Mavlankar, Jeonghun Noh, Pierpaolo Baccichet, Bernd Girod
• Keywords: ICIP 2008, Image Processing, IROI Video Session, Multicast Live Video, P2P Overlay, Stringent Latency Constraint, Unicast Client-server Delivery