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IEICE TRANSACTIONS on Fundamentals

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

Lan-Rong DUNG, Meng-Chun LIN

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Summary :

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 0.2 dB for 720 p HDTV clips coded at 8 Mbits/sec.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.12 pp.3638-3650
Publication Date
2008/12/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e91-a.12.3638
Type of Manuscript
Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category
Embedded, Real-Time and Reconfigurable Systems

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