Input device for 3-D translation and rotation of an image

摘要

A device and method can carry out reliable visceral 3-D input over a wide range at arbitrary measuring time intervals without being affected from electric field or temperature, with requiring small installation space. A bright spot is displayed on the display (1) surface of a display by scanning. A photo device (2) condenses the bright spot on the display (1) to project the spot light onto the projection plane, thereby projecting it onto photo detectors the projection plane. A counter (5) counts the time from the time of a vertical sync signal, and supplies its output to AND gates. A correspondence detector (7) brings bright spot display positions on the display (1) at multiple times into correspondence with their projection positions on the photo device (2) in accordance to recording time. An extrinsic parameter calculator (8) calculates the 3-D translation and rotation of the photo device (2) with respect to the bright spot scanning surface of the display from at least three sets of the bright spot display positions and their corresponding projection positions.