US 12,094,167 B2
Aircraft camera extrinsic calibration using head-up display
Weston J. Lahr, Sherwood, OR (US); Richard M. Rademaker, Cedar Rapids, IA (US); and Christopher M. Boggs, Gainesville, VA (US)
Assigned to Rockwell Collins, Inc., Cedar Rapids, IA (US)
Filed by Rockwell Collins, Inc., Cedar Rapids, IA (US)
Filed on Sep. 15, 2021, as Appl. No. 17/475,544.
Prior Publication US 2023/0082417 A1, Mar. 16, 2023
Int. Cl. G06T 7/80 (2017.01); G06T 7/33 (2017.01); G06T 7/73 (2017.01); G06V 10/22 (2022.01); G06V 10/75 (2022.01)
CPC G06T 7/80 (2017.01) [G06T 7/33 (2017.01); G06T 7/74 (2017.01); G06V 10/235 (2022.01); G06V 10/751 (2022.01); G06T 2207/20101 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer apparatus comprising:
a camera to be calibrated; and
at least one processor in data communication with the camera and a memory storing processor executable code for configuring the at least one processor to:
receive one or more boresight images from a handheld camera;
capture one or more images from the camera overlapping the one or more boresight images;
identify common features within the one or more images and one or more boresight images;
identify a plurality of reference points defined by specific pixel locations;
define a set of three orthogonal vectors based on the reference points, the set of three orthogonal vectors isolating a spatial relationship between the common features in the boresight and a vehicle including the computer apparatus;
compare the common features;
determine one or more transformations to apply to the one or more images based on comparison of common features; and
store the transformations for later application to future images from the camera.