US 12,169,923 B2
Method of detecting an abnormality and abnormality detection device
Tomohiro Matsuda, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jan. 19, 2022, as Appl. No. 17/578,659.
Claims priority of application No. 2021-023265 (JP), filed on Feb. 17, 2021.
Prior Publication US 2022/0261974 A1, Aug. 18, 2022
Int. Cl. G06T 7/00 (2017.01); G06T 5/00 (2024.01); G06T 5/50 (2006.01)
CPC G06T 7/001 (2013.01) [G06T 5/00 (2013.01); G06T 5/50 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/30108 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of detecting an abnormality comprising:
acquiring an image of an inspection target as a captured image;
generating a restored image by inputting the captured image into a first learning model, wherein the first learning model has learned with a normal image, wherein the normal image obtained by capturing a normal inspection target;
generating a difference image between the captured image of the inspection target and the restored image;
generating a restored difference image by inputting the generated difference image into a second learning model, wherein the second learning model has learned with a normal difference image; and
detecting abnormality of the inspection target using the difference image and the restored difference image.