Patent ID: 7268892

Claim:
A method for the verification and identification of an optical measuring device for measuring, by means of one or several cameras, the spatial position of one or several points situated in the measuring volume ( 9 ) of the measuring device, whereby the measuring device is calibrated, according to which calibration a mathematical model is calculated which makes it possible to determine the spatial position of a point perceived by the measuring device, comprising, providing, during a verification of the measuring device, a reference object ( 1 ) with predetermined dimensions and with position in the measuring volume ( 9 ), determining the mutual position of the reference elements ( 2 , 3 ) by measuring the position of one or several points on the reference elements ( 2 , 3 ) by means of the measuring device, the step of determining comprising placing a holder ( 11 ), upon which are provided reference points ( 12 , 13 , 14 ), against said one or several points on said reference elements ( 2 , 3 ) and measuring the position of these reference points ( 12 , 13 , 14 ) in order to determine the position of the holder ( 11 ), and calculating the mutual situation of the thus determined position of the reference points of the reference object ( 1 ) based on the measured points comparing the calculated mutual situation of the thus determined position of the reference points of the reference object ( 1 ) to the actual dimensions of the reference object ( 1 ), wherein reference points ( 17 , 18 , 19 ) are provided on said reference object ( 1 ) and the position of these reference points ( 17 , 18 , 19 ) is observed by said cameras of the measuring device to measure the position of these points, such that the orientation and the position of the reference object ( 1 ) is determined for each measurement, by means of said holder ( 11 ), of the position of said points of the reference elements ( 2 , 3 ), and wherein the relative movement of the reference points ( 17 , 18 , 19 ) of the reference object ( 1 ) and thus of the reference object ( 1 ) is determined, and wherein during an identification of the measuring device, on basis of the thus established deviations between the measured mutual position of the points of the reference object ( 1 ) and the actual dimensions of the reference object ( 1 ), said model, that has been determined during the calibration of the measuring device, is adjusted.