| 主权项 |
1. A system for the calculation of the Interpupillary Distance, defined as the distance between the center of the left pupil (304) and the center of the right pupil (305) of a User, comprising:
a) a processor that controls all other resources, performs automatic processing of data acquired by said camera and manages the results and user interface; b) a planar screen (200)(300)(400)(500) where images can be visualized; c) a camera (201)(301)(401)(501) which acquires images; d) a structure that rigidly attaches said camera and said screen; e) a planar calibration object (502) with a printed calibration pattern used to calibrate or estimate the geometric relation between said camera and said screen; f) a marker (203)(303), drawn in or placed above said screen, whose function is to allow the alignment of the User pupils with the shape of a line segment of white color or any other contrasting color with the black background of said screen, superimposed over said screen or drawn by the system to appear on said screen, wherein the shape of said marker can be a line segment, two points to align with the pupil centers, two circumferences, or any other shape that allows the alignment of the pupils in a straight line; g) a cover surface of said screen (200)(300)(400)(500) with reflective property, which working as a mirror, allows said User to see the reflection of his face (202) (203) and simultaneously, when the pupils are aligned with said marker, restricts geometrically the location of the pupils and their reflection to a unique plane P (308) perpendicular to said screen containing the said marker. |
