Multicasting multiview 3D video over a wireless network

摘要

Apparatus for multicasting 3D video comprises: a wireless transceiver (100) to wirelessly communicate with multiple recipients such as mobile devices 50 in a network 30; and control logic (103) coupled to the wireless transceiver to determine an amount of available bandwidth for multicasting multiple data streams for the recipients. The control logic (103) selects an encoded data stream including data substreams relating to at least first and second video reference views and corresponding depth data for respective ones of the video reference views, to transmit to a recipient via the wireless transceiver on the basis of the determined bandwidth. A method for multicasting 3D video includes the steps of encoding reference view texture and depth components of a video data stream to provide multiple compressed substreams representing different quality layers. On the basis of the determined bandwidth, the control logic selects substreams which will maximise average quality of resulting intermediate views constructed from the texture and depth components. The control logic also selects substreams to maintain a bit rate which does not exceed a certain capacity. Measures representing distortion of a synthesised view, generated from components of the video stream, are used to compute a quality metric.