Patent ID: 11908165
Assignee: BNSF RAILWAY COMPANY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 8:
9. A method for field calibration of an image capture module, comprising:
capturing, via an image capture module operably coupled to a beam of a vehicle, a first image of a target disposed proximate railroad tracks;
initializing a vehicle encoder operably coupled to the vehicle with a vehicle encoder rate;
capturing, via the image capture module, a second image of the target while the vehicle is moved over the target;
receiving image adjustments adjusting a contrast between two pixels to identify the boundary of light and dark portions of target;
comparing the number of lateral pixels to the number of longitudinal pixels; and
adjusting the vehicle encoder rate until the number of lateral pixels matches the number of longitudinal pixels.