本研究では，従来の映像提示手法では表現できなかった臨場感をムービングプロジェクタを用い，映像自体を動かすことによって，臨場感を高める手法の検討を行った.具体的には，撮影された方向を再現するために，オプティカルフローを用いて撮影時のカメラの位置を算出した.この手法を用いることにより，平均誤差7.5％で位置を求めることができ，これは本研究の用途に対して十分な精度である.%Ordinal TVs or PC monitors are used to present images. However, these image-presenting equipments are fixed and cannnot be moved and rotated. When pictures present with shooting angle based on audiences' looking position, their presence will be much higher. In this paper, we investigated the method for improving presense by using moving-projecter and roaming images. To represent the camera shooting angle, we used optical flow. An optical flow method resulted in errors of 7.5% of the camera directions, which was accurate enough for our purpose. Furthermore, we compared exisiting presenting method (non-moving) and our method (moving). Six subjects participated in this experiment. The result indicates that our method could help understanding of the positions of objects in images more precisely. We can say that the proposed method is effective to improve presense.
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