IEEE Transactions on Circuits and Systems for Video Technology
Block-matching translation and zoom motion-compensated prediction
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Block-matching translation and zoom motion-compensated prediction by sub-sampling
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
EURASIP Journal on Advances in Signal Processing
Video coding using fast geometry-adaptive partitioning and an elastic motion model
Journal of Visual Communication and Image Representation
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In all of the video coding standards like H.26X and MPEG-X, much of the compression comes from motion compensated prediction (MCP). Translational motion vectors (MVs) poorly model complex motion and thus coders using polynomial or affine MVs have been proposed in the past. In this paper, we demonstrate a novel affine predictor stage which can be easily incorporated into current codecs greatly increasing MCP quality. If used passively to generate the final prediction, gains of up to 0.7 and 1.6 dB were easily realized for ldquomobilerdquo and ldquoflower gardenrdquo video sequences, respectively. In addition, when the translational MVs are refined, gains of up to 0.98 and 1.88 dB for ldquomobilerdquo and ldquoflower gardenrdquo video sequences were respectively realized.