US 11,928,992 B1
Automated vehicle display calibration
Thomas A. Seder, Fraser, MI (US); Joseph F. Szczerba, Grand Blanc, MI (US); John P. Weiss, Shelby Township, MI (US); and Manoj Sharma, Troy, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Apr. 3, 2023, as Appl. No. 18/194,923.
Int. Cl. G02B 27/01 (2006.01); G06T 7/73 (2017.01); G09G 3/00 (2006.01)
CPC G09G 3/001 (2013.01) [G06T 7/74 (2017.01); G09G 2320/0693 (2013.01); G09G 2380/10 (2013.01)] 19 Claims
OG exemplary drawing
 
10. A method for calibrating a display for a vehicle, the method comprising:
projecting a reference graphic on a reference windscreen using a reference transparent windscreen display (TWD) projector;
capturing a first reference image of the reference graphic using a reference camera;
determining a reference camera deviation matrix, wherein the reference camera deviation matrix encodes deviations in the reference graphic due to characteristics of the reference windscreen;
determining a reference TWD camera transformation matrix based at least in part on the reference camera deviation matrix;
projecting the reference graphic on a vehicle windscreen using a vehicle TWD projector;
capturing a calibration image of the reference graphic using a vehicle TWD camera; and
calculating a vehicle TWD calibration matrix based at least in part on the reference camera deviation matrix, the reference TWD camera transformation matrix, and the calibration image.