上海交通大学学报(英文版) ›› 2013, Vol. 18 ›› Issue (4): 443-447.doi: 10.1007/s12204-013-1415-0
XIE Rong-shenga* (谢荣生), WU Ke-shoua (吴克寿), XU Gao-pana (许高攀), OUYANG Miaob (欧阳苗)
XIE Rong-shenga* (谢荣生), WU Ke-shoua (吴克寿), XU Gao-pana (许高攀), OUYANG Miaob (欧阳苗)
摘要: 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.
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