움직임벡터의 대칭성을 이용한 카메라 회전각 분석 = Analysis of Camera Rotation Utilizing Symmetry of Motion Vectors

다국어 초록 (Multilingual Abstract)

This paper proposes a camera motion estimation technique that utilizes symmetry of motion vectors induced by camera rotation. The proposed technique calculates several kinds of the extrinsic parameters of camera, such as panning, tilting, rolling, and zooming of camera motions by applying the proposed equation sets to the motion vectors at once, with no iteration. Furthermore 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 in various types of sequences show the validity and the broad applicability of the proposed technique.