A Novel Multiple Description Coding Frame Based on Reordered DCT Coefficients and SPIHT Algorithm

A novel MDC algorithm based on Discrete Cosine Transform (DCT) and the Set Partition in Hierarchical Trees (SPIHT) is proposed in this paper. Different from the commonly used DCT algorithm, all the transformed coefficients are reshaped into the wavelet decomposition structure to facilitate the use of the SPIHT algorithm. Then the direction-based information is used to form the three different channels. By using different bit rates to encode the information from three different orientations, i.e., vertical, horizontal and diagonal directions, the redundancy is introduced into the three channels. Every channel contains the hybrid information from three different directions. Experimental results show the advantages of this novel algorithm and the theoretical analysis has also been studied.