Patent ID: 11861819
Assignee: BNSF RAILWAY COMPANY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A calibration bar system, comprising:
a calibration bar including a target, a first and second end plate, and a marker strip having a known lateral distance;
an image capturing module coupled to a vehicle, wherein the image capturing module includes a camera operable to capture an image of the target; and
one or more controllers communicatively coupled to a vehicle encoder and the camera, wherein the one or more controllers are operable to:
determine a number of lateral pixels in a lateral pitch distance of the image of the target;
determine a lateral object pixel size based on the number of lateral pixels;
determine a number of longitudinal pixels in a longitudinal pitch distance of the image; and
compare the number of lateral pixels to the number of longitudinal pixels.