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2008
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Motion compensation based on implicit block segmentation

9 years 4 months ago
Motion compensation based on implicit block segmentation
Block-based motion and disparity compensation are popular techniques to exploit correlation between video frames. Block sizes used for compensation can be chosen to achieve a good trade-off between signaling overhead and prediction accuracy. However, motion field boundaries correspond to objects having arbitrary shapes; this limits the accuracy of block-based compensation, even when small block sizes are chosen. In this paper we seek to enable compensation based on arbitrarily-shaped regions, while preserving an essentially blockbased compensation architecture. To do so, we propose tools for implicit block-segmentation and predictor selection. Given two candidate block predictors, segmentation is applied to the difference of predictors. Then a weighted sum of predictors in each segment is selected for prediction. Simulation results show improvements in rate-distortion (RD) performance, as compared to the standard quad tree approach in H.264/AVC.
Jae Hoon Kim, Antonio Ortega, Peng Yin, Purvin Pan
Added 20 Oct 2009
Updated 20 Oct 2009
Type Conference
Year 2008
Where ICIP
Authors Jae Hoon Kim, Antonio Ortega, Peng Yin, Purvin Pandit, Cristina Gomila
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