Method and system for calibration using a touch screen

A system for calibration, comprising:

• a touch screen placed on a conveyor associated with at least one industrial robot and stationary with respect to the conveyor;
• and
• a controller communicatively connected to the touch screen and the at least one industrial robot, the controller being configured to:
• obtain, in response to a touch component mounted on a manipulator of the at least one industrial robot touching at least three points being not collinear on the touch screen when the conveyor is at a first position, a first set of coordinates of the at least three points in a robot coordinate system and a second set of coordinates of the at least three points in a touch screen coordinate system;
• cause the conveyor to move from the first position to a second position different from the first position;
• obtain, in response to the touch component touching at least further three points being not collinear on the touch screen when the conveyor is at the second first position, a third set of coordinates of the at least further three points in the robot coordinate system and a fourth set of coordinates of the at least three further points in the touch screen coordinate system;
• and
• determine a conveyor coordinate of the conveyor in the robot coordinate system based on the first set of coordinates, the second set of coordinates, the third set of coordinates and the fourth set of coordinates.