Coding efficiency improvement of HEVC using asymmetric motion partitioning

In this paper, coding efficiency improvement of HEVC using asymmetric motion partitioning (AMP) is provided based on HM-6.0. AMP allows asymmetric shape partition mode of prediction unit (PU) for inter prediction. AMP improves the coding efficiency, since irregular image patterns, which otherwise would be constrained to being represented by a smaller symmetric partition, can now be more efficiently represented without requiring further splitting. For encoder speed up, additional conditions are checked before doing motion estimation for each motion partitions. If the certain conditions are met, additional motion estimation, which is main source of encoder complexity for AMP, can be skipped. Experimental results demonstrate that AMP with encoding speed-up shows 0.8% coding efficiency improvement with 14% encoding time increase. Especially for videoconference sequences, coding efficiency improvement reaches to 1.4%.

[1]  Gary J. Sullivan,et al.  Efficient quadtree coding of images and video , 1994, IEEE Trans. Image Process..

[2]  M. Omair Ahmad,et al.  Quadtree structured region-wise motion compensation for video compression , 1999, IEEE Trans. Circuits Syst. Video Technol..

[3]  Satoshi Kondo,et al.  A motion compensation technique using sliced blocks in hybrid video coding , 2005, IEEE International Conference on Image Processing 2005.

[4]  Simone Milani,et al.  Segmentation-based motion compensation for enhanced video coding , 2011, 2011 18th IEEE International Conference on Image Processing.

[5]  Edson M. Hung,et al.  On Macroblock Partition for Motion Compensation , 2006, 2006 International Conference on Image Processing.

[6]  Xin Li,et al.  Geometry-Adaptive Block Partitioning for Video Coding , 2007, 2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07.