US 12,425,522 B2
Authenticity collation system and authenticity collation method
Tomohiro Mizuno, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Jul. 3, 2023, as Appl. No. 18/346,768.
Application 18/346,768 is a continuation of application No. PCT/JP2022/001195, filed on Jan. 14, 2022.
Claims priority of application No. 2021-004326 (JP), filed on Jan. 14, 2021.
Prior Publication US 2023/0351779 A1, Nov. 2, 2023
Int. Cl. G06V 20/00 (2022.01); G06T 5/00 (2024.01); G06T 5/50 (2006.01); G06T 7/11 (2017.01); G06T 7/30 (2017.01); G06V 10/75 (2022.01); H04N 1/32 (2006.01); H04N 1/407 (2006.01)
CPC G06V 20/95 (2022.01) [G06T 5/00 (2013.01); G06T 5/50 (2013.01); G06T 7/11 (2017.01); G06T 7/30 (2017.01); G06V 10/759 (2022.01); H04N 1/32133 (2013.01); H04N 1/407 (2013.01); G06T 2207/20021 (2013.01); H04N 2201/3233 (2013.01); H04N 2201/3269 (2013.01); H04N 2201/3276 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An authenticity collation system comprising:
an issuing apparatus that issues an information medium by printing a collation image on a substrate based on collation image data; and
a collation apparatus that collates authenticity of the information medium based on the collation image,
wherein the issuing apparatus includes a first processor,
the first processor is configured to acquire an image obtained by capturing the collation image printed on the information medium via a camera as a first captured image,
the collation apparatus includes a second processor, and
the second processor is configured to:
acquire an image obtained by capturing a collation image printed on an information medium to be collated via a camera as a second captured image;
generate a corrected image obtained by performing density correction on the first captured image, by predicting a density change at a time point at which the second captured image is acquired based on an elapsed time from a time point at which the first captured image is acquired; and
determine a collation region for collation between the first captured image and the second captured image based on a difference image obtained by obtaining a difference between the second captured image and the corrected image for each pixel.