Patent ID: 11940569
Assignee: YELLOWSCAN
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for calibrating a measuring system including an image capture device, a laser scanner, and a positioning unit, the method comprising:
preparing at least two images provided by the image capture device, the images representing at least one common scene captured from different points of view, and preparing a 3D point cloud of the common scene created using the data provided by the laser scanner and by the positioning unit;
identifying at least one homologous point in the images, the homologous point corresponding to the same point of the common scene; and
performing an optimization sequence for determining at least one calibration parameter, the optimization sequence comprising at least one iteration of the following steps:
for each image, identifying, in the 3D point cloud, at least one close point that projects into a neighborhood of the homologous point of the image;
establishing a measurement of the distance separating the close points associated with the homologous point of the images; and
adjusting the calibration parameter according to the established measurement.