Patent №
US 9,536,162
Granted
2017-01-03
Filed 2013
Owner
REPUBLIC OF KOREA(NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF PUBLIC ADMINISTRATION AND SECURITY
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
13980150
The present invention relates to a method for detecting a mark that is invisible in the visible light region. Here, the invisible mark is displayed on a card using a characteristic according to which the color of light is changed by means of a refractive index difference according to media in the visible light region. According to the method for detecting the invisible mark, it may be quickly determined whether the card is a counterfeit card in an investigation. In addition, since it is unnecessary to repeatedly inspect the card to be checked using various wavelengths, the time required for determining whether the card is a counterfeit card may be reduced.
AI classification
Ownership
REPUBLIC OF KOREA(NATIONAL FORENSIC SERVICE DIRECTOR MINISTRY OF PUBLIC ADMINISTRATION AND SECURITY
assignment · 308160004
Assignors
LEE, JOONG, KANG, TAE-YI, BYUN, JUN SEOK
On an employer assignment, the assignors are typically the inventors.