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

Claim 2:
3. The system of claim 1, wherein to determine the reference TWD camera transformation matrix, the reference controller is further programmed to:
generate a deviation-compensated reference graphic matrix by summing the intended reference graphic matrix and the reference camera deviation matrix;
project a deviation-compensated reference graphic on the reference windscreen using the reference TWD projector, wherein a location of each of a plurality of projected dots of the deviation-compensated reference graphic is defined by the deviation-compensated reference graphic matrix;
capture a second reference image of the deviation-compensated reference graphic using the reference TWD camera;
identify a plurality of perceived dots of the deviation-compensated reference graphic in the second reference image;
determine an actual x-coordinate and an actual y-coordinate of each of the plurality of perceived dots of the deviation-compensated reference graphic in the second reference image;
generate a reference TWD camera matrix, wherein each element of the reference TWD camera matrix contains the actual x-coordinate and the actual y-coordinate of one of the plurality of perceived dots of the deviation-compensated reference graphic in the second reference image; and
determine the reference TWD camera transformation matrix by subtracting the reference TWD camera matrix from the reference camera deviation matrix.