This paper proposed a novel architecture for spatially scalable video coding, namely, Fine-Granularity Spatially Scalable (FGSS) coding. The traditional layered spatially scalable coding provides only coarse scalability in which bit-stream can be decoded only at a few fixed resolutions, but not something in between. The proposed FGSS scheme provides fine-granularity property to the spatial scalability. In addition, the proposed scheme provides a flexible embedded bitstream that can be decoded up to any point in the enhancement layer bitstream from low-resolution to high-resolution. This feature further enables efficient video streaming over the Internet where the scalable bitstream can adapt to the widely fluctuated bandwidth.
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