We propose a method to control a camera in order to realize a planned camera-work with reduced number of camera motion changes. A camera-work to shoot a moving object can be defined by the position, velocity, size and magnification rate of the object, and the velocity of the background in the video image. When we obtain video images, unexpected motion of the object makes the difference between the resultant camera-work and the planned camera-work. If we control the camera so that the resultant camera-work is exactly the same as the planned camera-work, the camera motion are frequently occurred and the resultant video images are not comfortable for a human to see. Therefore, we should consider the timing and amount of camera motion adjustments. Considering this issue, we propose a method to control the camera so that the resultant camera-work is kept within an acceptable range of the planned camera-work with reduced number of camera motion adjustments.
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