2012 Volume 14 Issue 1 Pages 1-8
This paper proposes a new type of display system by which images come out in an open space according to the motion of users or devices. This is an application of the specialized projector with a function of pixel-by-pixel visible light communication, which the authors have previously developed. This projector permits image data as invisible high-speed flickering signals into the open space. In the space filled with the invisible image data, by scanning a specialized device, we can make the image show up. Based on this concept, this paper introduces two implementations: "SteganoScan" and "SteganoScan Orbs." SteganoScan is a kind of persistence of vision display. When a performer waves an array of LED module with photo-detectors quickly in the projection light, viewers can perceive floating 2D images caused by the effect of retinal afterimage. SteganoScan Orbs consists of tens of balls which glow like moving pixels and form an image.
