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Source coding by exploiting the temporal and spatial correlations in an input video stream is well established in conventional video coding. However, when Distributed Video Coding (DVC) is concerned, shifting the source coding from the encoder to the decoder made this a more complicated and possibly a sub optimal process. Exploiting the temporal correlations has so far been attempted utilizing the key frames, by motion compensation using the interpolated (or extrapolated) motion field. However, exploiting the spatial correlations within the DVC framework is still an unsolved problem.
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