Patent ID: 8462137

Claim:
An object detection calibration system comprising: a touch screen comprising: a control panel comprising a first side, a second side, a third side, and a fourth side; and at least one first image sensor positioned at a corner region joining the first side and the second side; and an auxiliary reference device comprising a plurality of reference marks comprising at least a first set of reference marks, a second set of reference marks, and a first boundary mark, wherein the first set of reference marks is positioned on the third side, the second set of reference marks is positioned on the fourth side, and the first boundary mark is positioned at a corner region joining the third side and the fourth side; wherein the first image sensor is utilized for capturing a first image of at least a first object and the plurality of reference marks, and the touch screen determines relative position relationships between the first image sensor, the first object, and the plurality of reference marks according to positions of the first object and the plurality of reference marks in the first image.