Patent ID: 11928992
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. The system of claim 17, wherein to calculate the vehicle TWD calibration matrix, the vehicle controller is further programmed to:
identify a plurality of perceived dots of the reference graphic in the calibration image;
determine an actual x-coordinate and an actual y-coordinate of each of the plurality of perceived dots of the reference graphic in the calibration image;
generate an actual vehicle TWD matrix, wherein each element of the actual vehicle TWD matrix contains the actual x-coordinate and the actual y-coordinate of one of the plurality of perceived dots of the reference graphic in the calibration image;
calculate a vehicle TWD deviation matrix by subtracting the actual vehicle TWD matrix from at least one of: the first reference calibration matrix and the second reference calibration matrix; and
calculate the vehicle TWD calibration matrix by subtracting the vehicle TWD deviation matrix from a reference TWD camera transformation matrix.