3-D facial animation for very low bit rate mobile video

Three-dimensional facial model coding can be employed in various mobile applications to provide an enhanced user experience. The potential for low bit-rate and scalability that 3-D coding provides, makes it suitable for use in conjunction with various mobile networks from GSM to UMTS. However, what is less clear is the sensitivity to channel errors of 3-D coded data. This paper examines this issue in order to determine appropriate delivery schemes for the encoded data. In particular, the performance of low bit-rate 3-D "talking heads" is examined for GPRS (General Packet Radio Service) and EGPRS (Enhanced GPRS) networks.