US 12,112,459 B2
Systems and methods for removing grid lines from digital graph images
Mark McCabe, Larkspur, CO (US)
Assigned to THE BOEING COMPANY, Chicago, IL (US)
Filed by THE BOEING COMPANY, Chicago, IL (US)
Filed on Aug. 1, 2022, as Appl. No. 17/878,124.
Prior Publication US 2024/0037718 A1, Feb. 1, 2024
Int. Cl. G06T 5/77 (2024.01); G06T 5/10 (2006.01); G06T 5/20 (2006.01); G06T 11/20 (2006.01)
CPC G06T 5/77 (2024.01) [G06T 5/10 (2013.01); G06T 5/20 (2013.01); G06T 11/206 (2013.01); G06T 2207/20056 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
generating, with a control unit, a first spectrum graph of a Fourier transform of a first digital image, the first digital image including plural pixels comprising of data lines and grid lines;
identifying one or more of the plural pixels of the first digital image to be removed from the first digital image, wherein the one or more of the plural pixels identified to be removed include a predetermined portion of the data lines of the first digital image and at least some grid lines of the first digital image;
removing, by the control unit, the identified one or more of the plural pixels from the first digital image to create a second digital image;
generating, by the control unit, a second spectrum graph of a Fourier transform of the second digital image;
creating, by the control unit, a filter based on the second spectrum graph of the Fourier transform of the second digital image, the second spectrum graph including plural pixels of data having different characteristics, the filter identifying at least first and second subsets of the plural pixels, wherein the data of the plural pixels of the first subset has a first set of characteristics, and the data of the plural pixels of the second subset having a second set of characteristics, the filter identifying the first subset of the plural pixels as a first classification, and the filter identifying the second subset of the plural pixels as a second classification;
applying, by the control unit, the filter to the first spectrum graph of the Fourier transform of the first digital image to create a third spectrum graph; and
performing, by the control unit an inverse Fourier transform on the third spectrum graph to convert the third spectrum graph to a third digital image, the third digital image including the data lines of the first digital image, wherein at least some of the grid lines of the first digital image are removed from the third digital image.