Patent ID: 7857703
Filing Date: 2010-12-28
Classification: A63F

Abstract:
1. A method for coordinate generation to be implemented using an orientation device, which is provided with a sensor that has an optical axis, said method comprising the steps of: A) providing at least three reference marks on a target that defines a first coordinate space; B) aiming the orientation device at an initial point on the target, and operating the orientation device such that the sensor is able to capture an image of the target that contains at least one of the reference marks, wherein one of the reference marks serves as the initial point; C) from the image captured in step B), determining an axis correction value, which is an offset of the optical axis of the sensor from an axis of the orientation device; D) aiming the orientation device at a target point on the target, and operating the orientation device such that the sensor is able to capture an image of the target that contains the reference marks and that defines a second coordinate space; and E) determining coordinates of the target point on the first coordinate space of the target with reference to the axis correction value and a relation established between the first coordinate space of the target and the second coordinate space of the image captured in step D), wherein step E) includes: