Multiple Reference Motion Compensation: A Tutorial Introduction and Survey
Foundations and Trends in Signal Processing
Delay constrained multiplexing of video streams using dual-frame video coding
IEEE Transactions on Image Processing
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Video codecs that use motion compensation have shown PSNR gains from the useof multiple frame prediction, in which more than one past reference frame is availablefor motion estimation. In dual frame motion compensation, one short-term referenceframe and one long-term reference frame are available for prediction. In this paper,we propose a dual frame motion compensation technique that allocates bits unevenlyamong frames to periodically create a high-quality frame that serves as the long-termreference frame for some time. By modifying an MPEG-4 encoder to use this techniqueon a set of video sequences, we show that it outperforms a normal dual framemotion compensation scheme in which the long-term reference frames are regularframes that are not allocated any extra rate.