QR code decoding system and method

• Main Authors: CHEN SHAOJUN, LIU ZHONG, WANG PAN, ZHANG YONG, LIAO ZIYANG
• Format: Patent
• Language: Chinese; English
• Published: 21.11.2023
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

The invention relates to the technical field of QR code decoding, and provides a QR code decoding system and method, and the system comprises an image obtaining module, a feature extraction module, a geometric constraint module, an RoI Transform module, a code detection module, and a code information reading module. According to the method, feature extraction is carried out on designated areas of different layers by using depth separable convolution, and feature extraction is carried out on other areas by using standard convolution, so that the reservation of image details is ensured on the basis of improving the feature extraction speed; aiming at the defect that the detection delay is high due to the fact that an existing deep learning-based QR code decoding technology is not sensitive to rotation, rapid identification of the rotation angle of a rotating QR code is achieved through combination of geometric constraint and RoI Transform, and then a QR code front view is obtained through projection transformat