It has become popular for non-professional people to enjoy creating a digital image with a 3DCG software or a high functional paint tool. It is assumed that making an animation is next step, however, it is difficult to make an animation with images of illustration. The water flow, in particular, is a fluid and doesn’t have a fixed contour, therefore animating the water flow is one of the challenging subjects. In this paper, a method for animating the water flow portion included in an illustration by synthesizing motion information extracted from the water flow video material with that portion is proposed. The proposed method had been implemented on a PC and its usefulness was confirmed through applying to some water flow illustration images.
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