Parity-Object Embedded Streaming for Synthetic Graphics

This paper proposes an object-oriented approach for streaming synthetic graphic contents over a packet-erasure channel. Graphic objects such as geometric meshes and texture images are coded independently into scalable resolutions and are transmitted in respective sequences to preserve their manipulation independency during packet delivery. For error resilience, FEC codes are generated as "parity objects" parallel to graphic objects. Using parity objects, multiple graphic objects are protected concurrently while also preferentially, in regard to their estimated importance on the display quality. Both the optimization framework and operational algorithm are developed for the generation of parity objects, and simulation results are presented to show the efficacy of the proposed mechanism.