US 11,928,806 B2
Systems and methods for evaluating part density, contamination and defects using computed tomography scanning
Yujun Wang, Columbus, IN (US); Ben Wang, Columbus, IN (US); Carl Justin Kamp, Winthrop, MA (US); Leigh Anne Rogoski, Columbus, IN (US); Rafael Ernesto Vasquez Lombardo, Columbus, IN (US); Michael J. Cunningham, Columbus, IN (US); Krishna Pradeep Chilumukuru, Columbus, IN (US); and Neal W. Currier, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Feb. 12, 2021, as Appl. No. 17/174,884.
Claims priority of provisional application 62/976,718, filed on Feb. 14, 2020.
Prior Publication US 2021/0256684 A1, Aug. 19, 2021
Int. Cl. G06K 9/00 (2022.01); G05B 15/02 (2006.01); G06T 3/40 (2006.01); G06T 7/00 (2017.01); G06T 7/11 (2017.01)
CPC G06T 7/0004 (2013.01) [G05B 15/02 (2013.01); G06T 3/40 (2013.01); G06T 7/11 (2017.01); G06T 2207/10081 (2013.01); G06T 2207/20132 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for determining a density of particulate matter in a particulate filter sample, the method comprising:
generating, by a controller included in a computing system, a computed tomography (CT) scan-based image of the particulate filter sample;
segmenting, by the controller, the CT scan-based image of the particulate filter sample into a plurality of regions; and
for at least one region from the plurality of regions,
determining, by the controller, a density of a portion of the particulate filter sample corresponding to the at least one region of the CT scan-based image of the particulate filter sample by:
determining, by the controller, a grayscale value for the at least one region of the plurality of regions in the particulate filter;
determining, by the controller, a reference value for the at least one region based on a reference sample;
comparing, by the controller, the grayscale value to the reference value, wherein the reference value is correlated to a certain density level;
determining, by the controller, the density based on the comparison to the reference value which indicates the density level; and
causing, by the controller, an electronic display of a user device to display the CT scan-based image comprising the at least one region and an indication of the density for the at least one region.