Machine vision vehicle wheel alignment image processing methods
First Claim
Patent Images
1. A method for determining at least one pose component associated with a vehicle wheel assembly, comprising:
- acquiring at least two images of at least a portion of the vehicle wheel assembly surface;
identifying a corresponding area of interest on the vehicle wheel assembly surface in each of said images;
generating multi-dimensional data representative of each of said identified corresponding areas of interest;
correlating said multi-dimensional data to a surface of a multi-dimensional mathematical model; and
wherein said mathematical model represents at least one pose component of a surface having symmetry about an axis.
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Abstract
A method of the present invention provides methods for processing images of vehicle wheel assemblies acquired during vehicle service procedures to determine vehicle wheel assembly pose components, from which vehicle wheel alignment angles may be calculated.
29 Citations
17 Claims
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1. A method for determining at least one pose component associated with a vehicle wheel assembly, comprising:
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acquiring at least two images of at least a portion of the vehicle wheel assembly surface; identifying a corresponding area of interest on the vehicle wheel assembly surface in each of said images; generating multi-dimensional data representative of each of said identified corresponding areas of interest; correlating said multi-dimensional data to a surface of a multi-dimensional mathematical model; and wherein said mathematical model represents at least one pose component of a surface having symmetry about an axis. - View Dependent Claims (2, 3, 5, 17)
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4. A method for determining at least one pose component associated with a vehicle wheel assembly, comprising:
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acquiring at least two images of at least a portion of the vehicle wheel assembly surface; identifying a corresponding area of interest on the vehicle wheel assembly surface in each of said images; generating multi-dimensional data representative of each of said identified corresponding areas of interest; correlating said multi-dimensional data to a mathematical model by projecting said multi-dimensional data onto a plane to generate a representation of at least a portion of a vehicle wheel assembly cross section; wherein said mathematical model represents at least one pose component of a surface having symmetry about an axis; and utilizing an iterative optimization process to identify a vehicle wheel assembly axis of symmetry from said generated representation.
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6. A method for determining at least one pose component associated with a vehicle wheel assembly, comprising:
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acquiring at least two images of at least a portion of a surface of the vehicle wheel assembly; identifying a corresponding area of interest in each of said images; generating multi-dimensional data representative of shapes of said identified corresponding areas of interest; and correlating said multi-dimensional data to a parametric model of the vehicle wheel assembly described by a mathematical equation containing a plurality of parameters that can be adjusted to alter the size and shape of the modeled vehicle wheel assembly. - View Dependent Claims (7, 8)
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9. A method for calculating at least one alignment angle of a vehicle wheel assembly, comprising:
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acquiring first and second images of at least a portion of the vehicle wheel assembly; generating a multi-dimensional depth map of surface features of the vehicle wheel assembly from said first image, said depth map represented as a set of points, each identifying a three-dimensional spatial coordinate of a point on the surface of the vehicle wheel assembly together with an image intensity value; and determining a change in at least one pose component associated with the vehicle wheel assembly between said first image and said second image utilizing said generated multi-dimensional depth map. - View Dependent Claims (10, 11, 12, 13)
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14. A method for determining during a vehicle service procedure, at least one pose component associated with a vehicle wheel assembly, comprising:
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acquiring at least one image of at least a portion of a surface of the vehicle wheel assembly; generating a plurality of multi-dimensional data points representative of at least a portion of said surface of said vehicle wheel assembly in said acquired image; correlating said plurality of multi-dimensional data points to a surface of a mathematical model which is representative of said vehicle wheel assembly; and wherein a pose component of said mathematical model represents a pose component associated with said vehicle wheel assembly. - View Dependent Claims (15, 16)
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Specification