A Global Motion Estimation Scheme Using Inter-relations of Motion Vectors of Symmetrical Triple Points in Video Sequence

This paper proposes a camera motion estimation technique that utilizes the special relations of motion vectors of geometrically symmetrical triple points of frames. The proposed technique calculates several kinds of the parameters, such as panning, tilting, rolling, and zooming of camera motions at once by applying the proposed equation sets to the motion vectors only once, and avoids the trial and error method which the existent works have used. Moreover it discriminates against the foreground region and effectively reflects only the background region into the calculation of motion parameters, thus making the calculation more accurate and fast enough to accommodate MPEG-4 requirements. Experimental results on various types of sequences show the validity and the broad applicability of the proposed technique.