US 12,417,526 B2
Measurement of textile cord count for rubber sheet calendering
Tobias Nebel, North Vancouver (CA); and Momcilo Gavrilov, North Vancouver (CA)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Mar. 10, 2023, as Appl. No. 18/120,332.
Prior Publication US 2024/0303797 A1, Sep. 12, 2024
Int. Cl. G06T 7/00 (2017.01); B29D 30/00 (2006.01); H04N 23/56 (2023.01); G06V 10/48 (2022.01)
CPC G06T 7/0004 (2013.01) [B29D 30/0061 (2013.01); G06T 7/0002 (2013.01); H04N 23/56 (2023.01); B29D 2030/0066 (2013.01); G06T 2207/20056 (2013.01); G06T 2207/30124 (2013.01); G06T 2207/30242 (2013.01); G06V 10/48 (2022.01)] 19 Claims
OG exemplary drawing
 
1. A method comprising:
monitoring a textile reinforced rubber sheet while the textile reinforced rubber sheet is moving in a machine direction (MD), wherein the textile reinforced rubber sheet includes a plurality of elongated textile cords embedded in the textile reinforced rubber sheet, and wherein an outer surface of the textile reinforced rubber sheet includes convex portions at which the plurality of elongated textile cords are located and concave portions positioned between the plurality of elongated textile cords are alternatively repeated, the method including:
(a) illuminating, by a light source, the outer surface of the textile reinforced rubber sheet with radiation;
(b) obtaining, by an imaging device, a digital image of an illuminated area on the outer surface of the textile reinforced rubber sheet;
(c) generating, by a processor, a frequency spectrum of the digital image based on one or more parameters associated with one or more pixels in the digital image; and
(d) converting, by the processor, the frequency spectrum into one or more cord parameters of the textile reinforced rubber sheet by identifying a dominant frequency in the frequency spectrum, and determining an average distance between adjacent cords of the plurality of elongated textile cords.