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US 2015/0354946 A1Published application
Wheel toe and camber measurement system
AssigneeRecognition Robotics, Inc.
InventorSimon Melikian
Life of this patent
Estimating the term…
Abstract
A system for measuring wheel alignment includes at least one camera and at least one processor in communication with the camera. The camera captures an image of a test wheel. The processor processes the captured image to measure the wheel alignment.
Claims15
A method for measuring wheel alignment comprising:
- using at least one camera to obtain at least one image of a test wheel that rotates about a z-axis;
- using at least one processor in communication with the at least one camera to locate an outer curve in the at least one image based on a difference of reflectivity on surfaces of the test wheel;
- using the at least one processor to locate a perspective center for the outer curve;
- using the at least one processor to locate the z-axis, wherein the z-axis is located based on an image of a self-centering target attached to the test wheel or an inner curve in the at least one image that is smaller than and bounded by the outer curve, wherein the inner curve is located based on a difference of reflectivity on the surfaces of the test wheel;
- and
- using the at least one processor to determine a wheel alignment for the test wheel based on comparing the perspective center with the z-axis.
3 more elements
A system for measuring wheel alignment comprising:
- at least one camera mounted to a frame offset from a surface upon which an associated vehicle wheel rotates about a z-axis, wherein the at least one camera captures at least one image of the associated vehicle wheel;
- and
- at least one processor in communication with the camera, the at least one processor being configured
- to locate an outer curve in the at least one image based on a difference of reflectivity on surfaces of the test wheel;
- to locate a perspective center for the outer curve;
- to locate the z-axis in the at least one image;
- and
- to measure Rx and Ry for the associated vehicle wheel based on comparing the perspective center to the z-axis.
5 more elements
The system of claim 10, wherein the outer curve is an ellipse when the test wheel is out of alignment.
Dependencies are inferred from the claim text.