A Transmission Scheme for Wavelet Coding Images over Packet Erasure Channels

A scheme is proposed for transmission of wavelet-based progressive image coding over packet erasure channel. The scheme uses layered multiple description coding to improve the error resilience performance of the source coding, and uses channel coding to combat the packet erasure. Post Compression Rate Distortion optimization (PCRD-opt) technique is adopted to optimize source coding. By reordering the source coding symbols and channel coding symbols through permuted systematic RS codes, the layered multiple description coding and channel code are combined efficiently. The same sorting algorithm is adopted at encoder and decoder to reduce the overhead. Experimental results show that the proposed scheme improves the received image quality with less overhead compared to the existing method.