Quantum anti-counterfeiting two-dimensional code generation method and scanning method

• Main Authors: ZHU MINBO, WANG YAN, LI DAWEI
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HANDLING RECORD CARRIERS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention discloses a quantum anti-counterfeiting two-dimensional code generation method and a scanning method. The method comprises the following steps: forming an initial two-dimensional code image by using a quantum random number seed and product information XOR; taking the digital image of the quantum random number seed as a digital watermark image; pre-compensating the digital watermark image; and superposing the initial two-dimensional code image and the pre-compensated digital watermark image through DCT transformation and singular value decomposition to form a product two-dimensional code. Block DCT and singular value decomposition are carried out on a scanned image during scanning, the scanned image is compared with pre-compensated digital watermark information stored in a database, inverse singular value transformation and inverse DCT transformation are carried out, and a pre-compensated digital watermark image is obtained; comparing numbers in the watermark image with quantum random number seed