US 12,293,503 B2
Method and apparatus for determining optical distortion of an object from a single image
Xue Liu, Maryland Heights, MO (US); David J. Sundquist, O'Fallon, MO (US); Matthew Mark Thomas, Maryland Heights, MO (US); Steven M. Volz, Alton, IL (US); and Hui Lin Yang, Derwood, MD (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by THE BOEING COMPANY, Chicago, IL (US)
Filed on Feb. 23, 2022, as Appl. No. 17/652,134.
Claims priority of provisional application 63/201,164, filed on Apr. 15, 2021.
Prior Publication US 2022/0343487 A1, Oct. 27, 2022
Int. Cl. G06K 9/00 (2022.01); G06T 7/00 (2017.01)
CPC G06T 7/0004 (2013.01) [G06T 2207/30108 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving an image of an object of known geometry and a transparent object, wherein the object of known geometry has distinct points and is visible through the transparent object, wherein a portion of the image of the object of known geometry visible through the transparent object is an inside region of interest (iROI), and wherein a portion of the image of the object of known geometry not viewed through the transparent object is an outside region of interest (oROI);
determining measured pixel locations for a plurality of identified pixels in the image, the plurality of identified pixels corresponding to the distinct points of the object of known geometry in the image;
calculating virtual locations in the image representing the distinct points of the object of known geometry within the iROI;
determining, for respective distinct points of the object of known geometry within the iROI, differences between the virtual location and the measured pixel location, based, at least in part, on a location of the plurality of identified pixels corresponding to the distinct points of the object of known geometry in the image in the oROI; and
establishing optical distortion of the transparent object based on the differences between the virtual locations and the measured pixel locations of the distinct points.