Adaptive slice-level parallelism for H.264/AVC encoding using pre macroblock mode selection
Journal of Visual Communication and Image Representation
Content-Aware Fast Motion Estimation for H.264/AVC
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Motion estimation optimization for H.264/AVC using source image edge features
IEEE Transactions on Circuits and Systems for Video Technology
Novel frame selection methods for multi-reference motion estimation
DSP'09 Proceedings of the 16th international conference on Digital Signal Processing
Complexity reduction of multi-frame motion estimation in h.264
MMM'07 Proceedings of the 13th international conference on Multimedia Modeling - Volume Part I
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The MPEG-4/AVC/H.264 video coding standard adopts various coding schemes such as multiple reference frames and variable block sizes for motion estimation. Hence, MPEG-4/AVC/H.264 provides gains in compression efficiency of up to 50% over a wide range of bit rates and video resolutions compared to previous standards. However, these features result in a considerable increase in encoder complexity, mainly regarding to mode decision and motion estimation. The proposed algorithms use the stored motion vectors to compose the motion vector without performing the full search in each reference frame. Therefore, the proposed algorithms can obtain an average speed up ratio of four for encoding, thus benefiting from the prediction of the motion vector for the reference frames in advance and maintaining good performance. Any fast search algorithm can be utilized to further largely reduce the computational load.