Method for position calibration of a camera and a LIDAR sensor using a calibration board, and a position calibration system

A position calibration system comprising a camera, a LIDAR sensor, a calibration board, and a processing unit, wherein the calibration board comprises known patterns, wherein the known patterns have different brightnesses and wherein additional reflection regions are present on the calibration board that have a higher reflectivity than the known patterns of different brightness and wherein:

• the camera is configured to record at least one image of the calibration board and wherein the processing unit is configured to determine a pose of the calibration board relative to the camera based on the known patterns;
• the LIDAR sensor is configured to transmit a laser light to the calibration board;
• the LIDAR sensor is configured to record at least one image and wherein the processing unit is configured to determine regions of high reflectivity based on intensity values of the laser light reflected by the calibration board;
• the processing unit is configured to determine the pose of the calibration board relative to the LIDAR sensor based on the known additional reflection regions and the determined regions of high reflectivity;
• and wherein the processing unit is configured:
• a) to convert both images into a common coordinate system based on the determined poses;
• or
• b) to convert one image into the coordinate system of the other image based on the determined poses;
• or
• c) to determine conversion values based on the determined poses to convert future images into a common coordinate system or to convert a future image into the coordinate system of another future image.