Robust SPIHT-based image compression

As a famous wavelet-based image coding technique, Set partitioning in hierarchical trees (SPIHT) provides excellent rate distortion performance and progressive display properties when images are transmitted over lossless networks. But due to its highly state-dependent properties, it performs poorly over losing networks. In this paper, we propose an algorithm to reorganize the wavelet transform coefficients according to wavelet tree concept and code each wavelet tree independently. Then, each coded bit-plane of each wavelet tree is packetized and transmitted to networks independently with little header information. Experimental results show that the proposed algorithm improves the robustness of the bit steam greatly while preserving its progressive display properties.