Patent ID: 8875407

Claim:
A machine vision vehicle wheel alignment system for acquiring measurements associated with a vehicle, comprising: at least one imaging sensor having a field of view; at least one optical target secured to a wheel assembly on a vehicle within the field of view of said at least one imaging sensor, said optical target having a plurality of visible features disposed on at least two surfaces, said visible features in a determinable geometric and spatial configuration; an accessible data store containing, for each optical target, a stored target calibration dataset including a determined geometric and spatial relationship between said plurality of visible features on a first surface of said at least two surfaces and said plurality of visible features on a second surface of said at least two surfaces; a processing unit configured to receive image data from said at least one imaging sensor, said image data representative of at least one visible feature on each of said two surfaces for said optical target; and wherein said processing unit is further configured to process said received image data, together with said stored target calibration dataset for said optical target retrieved from said accessible data store, to determine at least one measurement associated with the vehicle.