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Research on anti-counterfeiting quick response 2D barcode techniques based on digital watermark
Authors:XIE Rong-sheng  WU Ke-shou  XU Gao-pan  OUYANG Miao
Institution:1. Department of Computer Science and Technology,Xiamen University of Technology, Xiamen 361024, Fujian, China
2. Department of Applied Mathematics,Xiamen University of Technology, Xiamen 361024, Fujian, China
Abstract:In order to increase the watermarking capacity and improve the anti-counterfeiting performance of quick response (QR) two-dimensional (2D) barcode based on digital watermarking technique, this paper proposes a kind of graying algorithm for binary image to make transform domain watermarking methods possible. Based on the graying algorithm, the quantization-based watermarking scheme in discrete wavelet transform (DWT) domain is then designed. The experiments show that the proposed watermarking scheme for QR 2D barcode greatly improves anti-counterfeiting performance without loss of any barcode information.
Keywords:watermark  anti-counterfeiting  quick response (QR) code  binary image  discrete wavelet transform(DWT)
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