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Low-Pass Filter Based Vlsi Oriented Variable Block Size Motion Estimation Algorithm for H.264

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4 Author(s)
Zhenyu Liu ; Kitakyushu Found. for the Adv. of Ind. Sci. & Technol. ; Yang Song ; Ikenaga, T. ; Goto, S.

In this paper, a fast motion estimation algorithm, which is friendly to VLSI hardware implementation is proposed. This algorithm has such features: First, through "Haar" low-pass filter based subsampling, the computation complexity at each search position is reduced to about 25% of the original algorithm; Second, one modified motion vector prediction is provided to eliminate the data dependence among sub-partitions in the same macro block (MB). Based on this approach, parallel processing for variable block size motion estimation (VBSME) with integer pixel accuracy can be realized; Third, one "adaptive sub-search window" scheme is proposed to further reduce computation cost and it also can facilitate reference frame data reusing to reduce memory transfer from the external RAM to the on-chip SRAM. The proposed VBSME algorithm is very suitable for parallel VLSI implementation

Published in:

Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on  (Volume:2 )

Date of Conference:

14-19 May 2006