In this paper, a fast global motion estimation method is proposed for video coding. This method can accommodate not
only a translational motion model but also a polynomial motion model. It speeds up the procedure of the global motion
estimation (GME) by pre-analyzing the characteristics of the block. At the first stage, the smooth region blocks which
contribute less to the GME are filtered by using a threshold method based on image intensity. Next, a threshold method
based on the discrepancy of the motion vectors is used to exclude the foreground blocks from the GME. From the
experimental results, we can conclude that the proposed fast global motion estimation method manages to speed up the
processing of estimating the motion vector field while maintaining the coding performance.
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