Abstract: A computer-implemented method of calibrating an electronic display screen for touchless gesture control using a calibration device, wherein the method comprises: displaying, by the electronic display screen, a calibration pattern; detecting, using at least one depth camera, a calibration device being placed on the electronic display screen and a reflection of at least a part of the calibration pattern, wherein the reflection is provided by a reflective surface of the calibration device; determining, based on the detected reflection, the position of the calibration device with respect to the displayed calibration pattern on the electronic display screen; defining a touchless gesture control input area for the electronic display screen being observable by the at least one depth camera.

Abstract: A calibration device 100 for use in a calibration process of an electronic display screen 200 for touchless gesture control, the calibration device 100 comprising: a main body 102 defining a main axis 101 of the calibration device 100, wherein the main axis 101 extends from a proximal end 102a to a distal end 102b of the main body 102; a first foot 109a at the distal end 102b, the first foot 109a having a footing surface 110 being placeable on the electronic display screen 200 such that the footing surface 110 is in contact with and parallel to the electronic display screen 200, wherein the footing surface 110 is oriented at a predetermined angle, in particular 90°, with respect to the main axis 101 of the calibration device 100; a calibration pattern 103 comprising a machine-readable code being detectable by one or more optical sensors 300, in particular one or more depth cameras, wherein the one or more optical sensors 300 are arranged at or near the electronic display screen 200 and are configured to ob