Multi-Level, Multi-Step Motion Estimation Algorithm

Dong Shik SHIN  Nae Joung KWAK  Heak Bong KWON  Jae hyeong AHN  

IEICE TRANSACTIONS on Information and Systems   Vol.E84-D   No.6   pp.760-762
Publication Date: 2001/06/01
Online ISSN: 
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Image Processing, Image Pattern Recognition
motion estimation,  block matching algorithm,  motion vector,  video coding,  

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In this paper, we propose a multi-level block matching algorithm using motion information in blocks. In the proposed algorithm, the block-level is decided by the motion degree in the block before motion searching procedure, and then adequate motion searching performs according to the block-level. Which improves computational efficiency by eliminating an unnecessary searching process in no motion or low motion regions, and brings more accurate estimation results by deepening motion searching process in high motion regions. Simulation results show that the proposed algorithm brings the lower estimation error--about 20% MSE reduction--with the fewer blocks per frame and the lower computational loading--about 98% operational amount reduction--than full search block matching algorithm with constant block size.