Shadow++: a System for Generating Artificial Shadows Based on Object Movement

This paper proposes a novel system that generates an artificial shadow by focusing on the position and angle of an object that is used to create a shadow. Our proposed system employs the metaphor of shadow-picture playing. By placing an object in front of a screen, its shadow is projected onto the screen. At the beginning, only the "real shadow" is displayed. After a short while, the shape of the shadow changes, and some additional effects appear on the screen. Our system utilizes the movement of the object as a trigger; it generates a kinetic artificial shadow that corresponds to the movement patterns of the object. When the user moves the object, additional effects change along with the location and position of the object.