1
Daniel F DeMenthon: Computer vision system for position monitoring in three dimensions using non-coplanar light sources attached to a monitored object. University of Maryland, Christopher N Sears, July 13, 1993: US05227985 (335 worldwide citation)

A sensing system for monitoring the position and orientation of a rigid object (20). At least 4 point light sources (24) are mounted on the surface of the object (20) in a noncoplanar arrangement. A single electronic camera (26) captures images (59) of the point light sources (24). Locations of the ...


2
Daniel F Dementhon, Yukio Fujii: Three dimensional pointing device monitored by computer vision. University of Maryland, Christopher N Sears, March 22, 1994: US05297061 (127 worldwide citation)

A pointing device (28), comprising light sources (30) and monitored by a computer vision task running in a microcontroller (108) and a computer (24). The computer vision task computes the spatial position and orientation of the pointing device, and enables an operator to control virtual three dimens ...


3
Daniel F DeMenthon: Computer vision system for accurate monitoring of object pose. University of Maryland, Christopher N Sears, February 7, 1995: US05388059 (81 worldwide citation)

A sensing system for accurately monitoring the position and orientation of an object (28). At least 4 point light sources (26) are mounted on the surface of the object (28). A single electronic camera (20) captures images (92) of the point light sources (26). Locations of these images (92) are detec ...


4
Daniel F DeMenthon: Computer-controlled peripheral shaping system. June 23, 1987: US04675825 (35 worldwide citation)

A system is disclosed for cutting shapes from slabs of easily machinable material, such as plastic foam, under computer control. These shaped slabs can then be piled and glued together in order to build large complex volumes, to be used as models, molds or cores of fiber-reinforced objects. The slab ...