Scanners are outdoor video installations which project geometric computer animations onto vegetation and terrain. They are intended to be viewed at night. In its essential state, a simple animation places a vertical white line on a black background, which moves across the frame from side to side. When this animation is projected onto a bush or tree, the line becomes a vertical plane of light scanning across the branches of the subject, exposing detailed structure which is normally not perceived. A familiar plant form becomes exotic, even alien, as details of its physical structure are revealed. Since the scanning plane of light is continuously in motion, the visual field is complex and ever-changing. Rather than viewing a static structural image, the viewer experiences a gestalt of the illuminated structure.