US 11,692,878 B2
Matching color and appearance of target coatings based on image entropy
Larry E. Steenhoek, Wilmington, DE (US); Robert V. Canning, Bear, DE (US); Dominic V. Poerio, Wilmington, DE (US); and Neil Murphy, Audubon, NJ (US)
Assigned to AXALTA COATING SYSTEMS IP CO., LLC, Wilmington, DE (US)
Appl. No. 16/770,034
Filed by AXALTA COATING SYSTEMS IP CO., LLC, Wilmington, DE (US)
PCT Filed Dec. 12, 2018, PCT No. PCT/US2018/065238
§ 371(c)(1), (2) Date Jun. 4, 2020,
PCT Pub. No. WO2019/113605, PCT Pub. Date Jun. 13, 2019.
Application 16/770,034 is a continuation of application No. 15/833,597, filed on Dec. 6, 2017, granted, now 11,062,479.
Prior Publication US 2021/0239531 A1, Aug. 5, 2021
Int. Cl. G01J 3/46 (2006.01); G06T 7/90 (2017.01); G06T 7/00 (2017.01); H04N 1/60 (2006.01); G06T 7/33 (2017.01); G06F 16/51 (2019.01); G06F 16/535 (2019.01); G06F 16/583 (2019.01); G06F 18/213 (2023.01); G06V 10/56 (2022.01); G06V 10/75 (2022.01)
CPC G01J 3/463 (2013.01) [G01J 3/46 (2013.01); G06F 16/51 (2019.01); G06F 16/535 (2019.01); G06F 16/5838 (2019.01); G06F 18/213 (2023.01); G06T 7/001 (2013.01); G06T 7/33 (2017.01); G06T 7/90 (2017.01); G06V 10/56 (2022.01); G06V 10/757 (2022.01); H04N 1/6008 (2013.01); H04N 1/6047 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/30108 (2013.01); G06T 2207/30156 (2013.01); H04N 1/6052 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for matching a target coating comprising:
a storage device for storing instructions;
one or more data processors configured to execute instructions to:
receive a target image of the target coating, wherein the target image comprises target image data;
apply a feature extraction analysis process to the target image data to determine a target image feature comprising extracting a target pixel feature from the target image data based on image entropy of the target pixel feature, wherein the feature extraction analysis process comprises dividing the target image into a plurality of target pixels, determining the target pixel feature for individual target pixels of the plurality of target pixels, determining a target pixel feature difference between the individual target pixels, and using the target pixel feature difference to determine the target image feature; and
determine a calculated match sample image with the target image feature based upon substantially satisfying one or more pre-specified matching criteria.