Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A new 4-way search window for improve memory bandwidth by 2-D data reuse for ME in H.264

H.264의 움직임추정에서 2차원 데이터재사용으로 메모리대역폭을 개선하기 위한 4방향 검색윈도우

  • 이경호 (광운대학교 컴퓨터공학과) ;
  • 이승권 (광운대학교 컴퓨터공학과) ;
  • 공진흥 (광운대학교 컴퓨터공학과)
  • Published : 2008.06.18
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Abstract

In this paper, a new 4-way search window is developed for H.264 Motion Estimation(ME) to improve the memory bandwidth. The proposed 4-way(up, down, left, right) search window could improve the reuse of overlapped window data to reduce the redundancy access factor by 1.4, though the 1/3-way search window requires $7.7{\sim}11$ times of data retrieval redundantly. In experiments, the new implementation of 4-way search window on Altera Stratix-III could deal with CIF ($352{\times}288$) video of 3 reference frame, $48{\times}48$ search area and $16{\times}16$ macroblock by 30fps real time at 55.2MHz.

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