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Fast Motion Estimation Algorithms Through Adaptive Application of the Hadamard Transform  

Lee, Hyuk (한양대학교 전자통신컴퓨터공학과 영상통신 및 신호처리 연구실)
Kim, Jong-Ho (한양대학교 전자통신컴퓨터공학과 영상통신 및 신호처리 연구실)
Jin, Soon-Jong (한양대학교 전자통신컴퓨터공학과 영상통신 및 신호처리 연구실)
Jeong, Je-Chang (한양대학교 전자통신컴퓨터공학과 영상통신 및 신호처리 연구실)
Abstract
In this paper, we propose a new, effective, fast motion estimation algorithms using $4{\times}4$ pixels Hadamard transform. The Hadamard transform has the advantage of simplicity because it uses only addition and subtraction. Motion estimation is composed of three stages. First, it should be decided whether to terminate the search early and use a previous motion vector with DC(Direct Current) coefficients. Then the adaptive matching scan order for motion estimation should be determined according to the image complexity using AC(Alternating Current) coefficients. Experimentally, we adapted this algorithms to MVFAST and PMVFAST algorithms, and the proposed algorithms turn out to be very efficient in terms of computational speed while remaining almost the same in terms of PSNR(Peak Signal-to-Noise Ratio) compared to MVFAST and PMVFAST algorithms.
Keywords
Fast Motion Estimation; Hadamard Transform; Adaptive Matching Scan; MPEG-4 Video;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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