멀티미디어 환경의 발전에 따라 동영상에 대한 효과적인 검색 및 관리와 CG와 일반 영상의 합성을 위하여 영상 내의 카메라 동작 요소 검출 기법이 필요하다. 본 논문에서는 sub-block당 투영 영상을 이용만 카메라 동작 요소 검출 방법을 제안한다. 제안한 방법은 sub-block당 평균값을 이용만 투영 영상상에서 각 sub-block 내에서의 x, y 방향 이동 성분을 구하여 이를 통한 Optical flow를 얻는다. 제안하는 방법은 기존의 block-matching을 통하여 optical flow를 얻는 방법보다 계산량의 감소와 계산 속도의 증가를 나타낸다. 실험 결과에서는 제안하는 방법에 의하여 얻은 optical flow를 보여주며 예측도의 증가를 보여준다.
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