| OCR Text |
Show contains an ultrasonic, three-dimensional input device mechanically coupled device which may be used to inp, three-dimensional position at a time. Other d attached to the single-user system include a W processor [1] for rapid hidden surface removal, a drawing system, a storage scope, a moderate precision scope, a high precision scope, and two 35 rnrn motion p. cameras with color wheels, shutters, and film a mechanisms which may be operated entirely under prog control. A matrix multiplier has recently been instal Special precautions have been taken in the prepa: of the room which houses the system. The imm environment is highly controlled. Since ambient ligh reflected light may interfere with the performance system the four walls and ceiling have been painted A light-colored, unwaxed tile floor remains unchanged. since it is the only reflecting surface, light does bounce freely about the room. The doors, vents, window to the computer room have been modified so thi outside light may enter the room while the sys operating. As an additional precaution, special red-co filters have been placed in front of the photomultj tubes to eliminate all light below 650 nanometel wavelength. A darkroom safelight with a green filt used to illuminate the room. A green filter also covel panel lights of the digitizer and control unit. ErelJ |
