Patent ID: 9726911
Date: 2017-08-08
CPC Classifications: A61B,G02C

Claim:
1. A process for estimation of a reference posture of a subject for the purposes of taking measurements for determination of parameters for the manufacture of a vision correction device, comprising the steps, for a plurality of arrivals of the head at a target reference posture from at least one deviated posture, of: measuring the real reference posture, to obtain several sets of data of real reference posture, and storing said sets of data, by means of a digital processing unit processing said sets of data of real reference posture to produce an optimal reference posture, wherein measuring the real reference posture comprises the location of singular points on at least one image of the subject, wherein the posture data comprises a pantoscopic angle value and cap angle value of the head of the subject, and wherein the pantoscopic angle value and cap angle value are determined by means of conditional probabilities depending on the previous sets of data of real reference posture and/or the previous type of deviated posture.