Block-Matching Translational and Rotational Motion Compensated Prediction Using Interpolated Reference Frame
Tóm tắt
Motion compensated prediction (MCP) implemented in most video coding schemes is based on translational motion model. However, nontranslational motions, for example, rotational motions, are common in videos. Higher-order motion model researches try to enhance the prediction accuracy of MCP by modeling those nontranslational motions. However, they require affine parameter estimation, and most of them have very high computational complexity. In this paper, a translational and rotational MCP method using special subsampling in the interpolated frame is proposed. This method is simple to implement and has low computational complexity. Experimental results show that many blocks can be better predicted by the proposed method, and therefore a higher prediction quality can be achieved with acceptable overheads. We believe this approach opens a new direction in MCP research.
Tài liệu tham khảo
Wiegand T, Sullivan GJ, Bjøntegaard G, Luthra A: Overview of the H.264/AVC video coding standard. IEEE Transactions on Circuits and Systems for Video Technology 2003, 13(7):560-576.
Tourapis AM: Enhanced predictive zonal search for single and multiple frame motion estimation. Viual Communications and Image Processing, 2002, San Jose, Calif, USA, Proceedings of SPIE 4671: 1069-1079.
Wiegand T, Zhang X, Girod B: Long-term memory motion-compensated prediction. IEEE Transactions on Circuits and Systems for Video Technology 1999, 9(1):70-84. 10.1109/76.744276
Sullivan GJ, Baker RL: Rate-distortion optimized motion compensation for video compression using fixed or variable size blocks. Proceedings of IEEE Global Telecommunications Conference (GLOBECOM '91), December 1991, Phoenix, Ariz, USA 85-90.
Wong K-M, Po L-M, Cheung K-W, Ng K-H: Block-matching translation and zoom motion-compensated prediction by sub-sampling. Proceedings of IEEE International Conference on Image Processing (ICIP '09), November 2009, Cairo, Egypt 1597-1600.
Wiegand T, Steinbach E, Girod B: Affine multipicture motion-compensated prediction. IEEE Transactions on Circuits and Systems for Video Technology 2005, 15(2):197-209.
Kordasiewicz RC, Gallant MD, Shirani S: Affine motion prediction based on translational motion vectors. IEEE Transactions on Circuits and Systems for Video Technology 2007, 17(10):1388-1394.
Sullivan GJ, Baker RL: Motion compensation for video compression using control grid interpolation. Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '91), April 1991, Toronto, Canada 4: 2713-2716.
Karczewicz M, Nieweglowski J, Haavisto P: Video coding using motion compensation with polynomial motion vector fields. Signal Processing: Image Communication 1997, 10(1-3):63-91. 10.1016/S0923-5965(97)00019-2
Nakaya Y, Harashima H: Motion compensation based on spatial transformations. IEEE Transactions on Circuits and Systems for Video Technology 1994, 4(3):339-356. 10.1109/76.305878
Pickering MR, Frater MR, Arnold JF: Enhanced motion compensation using elastic image registration. Proceedings of IEEE International Conference on Image Processing, October 2006 1061-1064.
Zitová B, Flusser J: Image registration methods: a survey. Image and Vision Computing 2003, 21(11):977-1000. 10.1016/S0262-8856(03)00137-9
Girod B: Motion-compensating prediction with fractional-pel accuracy. IEEE Transactions on Communications 1993, 41(4):604-612. 10.1109/26.223785
Po L-M, Wong K-M, Ng K-H, et al.: Motion compensated prediction by subsampled block matching for zoom motion contents. ISO/IEC JTC1/SC29/WG11 MPEG2010/M17163, (91th MPEG Meeting), 2010, Kyoto, Japan