ERROR-RESILIENT IMAGE AND VIDEO CODING FOR WIRELESS COMMUNICATION-SYSTEMS

Current techniques for coding images and video sources with resilience to channel errors can remove much of the need for complex high-redund ancy channel coding and provide a graceful degradation of performance with decreasing channel quality. The main function of these error-resi lient techniques is to reduce the propagation of errors within the dec oded data. Two main techniques are discussed in detail in this paper: the error-resilient entropy code (EREC) and pyramid vector quantisatio n (PVQ). The paper concludes with a brief comparison of the relative m erits of these systems and areas for further consideration.