Patent ID: 11953310
Assignee: EINES SYSTEMS, S.L.U.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  G  H | IPC G  H

Claim 1:
2. The method for measuring the gap and flush of vehicle parts by means of a measuring tunnel according to claim 1, wherein the step of calibrating the video cameras additionally comprises the following sub-steps for calculating the intrinsic parameters:
taking at least two images of a calibration chessboard that comprises at least a data matrix code and a fiducial marker;
decoding the data matrix code to obtain a size of the square, a number of rows and a number of columns of the calibration chessboard;
determining a center square of the calibration chessboard based on the data matrix code;
calculating all of the connections of the squares starting from the center square;
calculating an Optical Center, a focal distance, at least six parameters of Radial distortion (K1-K6) and at least two parameters of tangential distortion (P1, P2) based on the connections of the squares, the size of the optic comprised in the video cameras and the cell size of the camera's CDD.