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

Claim 11:
12. The method of claim 11, wherein determining the reference TWD camera transformation matrix further comprises:
generating a deviation-compensated reference graphic matrix by summing the intended reference graphic matrix and the reference camera deviation matrix;
projecting 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;
capturing a second reference image of the deviation-compensated reference graphic using a reference TWD camera;
identifying a plurality of perceived dots of the deviation-compensated reference graphic in the second reference image;
determining 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;
generating 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
determining the reference TWD camera transformation matrix by subtracting the reference TWD camera matrix from the reference camera deviation matrix.