Patent ID: 8150144

Claim:
A method for determining a rotational axis and a center of rotation of the vehicle wheel while a motor vehicle is being driven, comprising the steps of using at least two optical recording devices positionally assigned to each other; processing an image information that was recorded with consideration of several wheel features present on the wheel or attached for measurement purposes, by a downstream evaluation unit; using at least one body feature present on a body or attached for measurement purposes; detecting 2D coordinates of the wheel features and of the at least one body feature in a time-synchronized manner; based on the detection, calculating 3D coordinates of the wheel features and of the at least one body feature at certain time intervals; back-calculating the 3D coordinates of the wheel features and of the at least one body feature to a previously defined reference time or a related reference position of the vehicle wheel, with consideration for a distance traveled by the at least one body feature relative to the reference position; analyzing curved paths of the wheel features and of the at least one body feature in an evaluation with regard for effects of at least one of influencing variables of steering angle, steering motion, uneven road conditions, and speed change; and yielding by the analysis correction factors or compensation functions for correcting the effects.