2023
DOI: 10.1111/1556-4029.15325
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Research on detection techniques for pattern modifications of playing cards used in illegal gambling operations

Abstract: We investigated pattern‐modified marked cards used in fraudulent gambling cases in Korea. These cards are printed with modifications to some of the repeated marks on the back, revealing the hand on the front and enabling fraudsters to deceive their victims. We proposed a method for identifying the modified part by first enhancing the card's color difference using an image processing technique and then calculating the similarity between the repeated basic patterns with a Siamese network. This method is fast and… Show more

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