Wide-Range Motion Estimation Architecture with Dual Search Windows for High Resolution Video Coding

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概要

• 論文の詳細を見る

• This paper presents a memory-efficient motion estimation (ME) technique for high-resolution video compression. The main objective is to reduce the external memory access, especially for limited local memory resource. The reduction of memory access can successfully save the notorious power consumption. The key to reduce the memory accesses is based on center-biased algorithm in that the center-biased algorithm performs the motion vector (MV) searching with the minimum search data. While considering the data reusability, the proposed dual-search-windowing (DSW) approaches use the secondary windowing as an option per searching necessity. By doing so, the loading of search windows can be alleviated and hence reduce the required external memory bandwidth. The proposed techniques can save up to 81% of external memory bandwidth and require only 135 MBytes/sec, while the quality degradation is less than 0.2dB for 720p HDTV clips coded at 8Mbits/sec.

• 2008-12-01

著者

• Lin Meng-chun

  Department Of Electrical And Control Engineering National Chiao-tung University

• Dung Lan-rong

  Department Of Electrical And Control Engineering National Chiao-tung University

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