Embedded video compression with error resilience and error concealment

This paper presents an embedded video compression with error resilience and error concealment using three dimensional SPIHT (3-D SPIHT) algorithm. We use a new method for partitioning the wavelet coefficients into spatio-temporal (s-t) blocks to get higher error resilience and to support error concealment. Instead of grouping adjacent coefficients, we group coefficients in some fixed intervals in the lowest subband to get interleaved trees. All of the sub-blocks correspond to a group of full frames within the image sequence, because each group of interleaved trees has coefficients dispersed over the entire frame group. Then we separate the stream into fixed length packets and encode every one with a channel code. Experiments show that our proposed method brings higher error resilience in noisy channels since the decoded coefficients associated with early decoding error would be spread out to the whole area along with the sequence, and we can conceal the lost coefficients with the surrounding coefficients even if some of substreams are totally missing. In addition to that, our proposed method gives higher coding performance in noiseless channels than the conventional grouping method of grouping contiguous trees.