计算机工程Issue(12)：126-129,4.DOI:10.3969/j.issn.1000-3428.2013.12.027
基于离散小波变换的QR二维条码防伪技术
QR 2D Barcode Anti-counterfeiting Technique Based on Discrete Wavelet Transform
摘要
Abstract
The Quick Response(QR) barcode anti-counterfeiting technique based on digital watermarking provides low watermarking capacity, and its anti-counterfeiting performance is poor. To solve the problem, Rand-graying method and background-image-graying method are proposed for QR binary images to increase watermarking capacity. The graying extent for QR binary image is determined by the graying threshold which can be selected according to specific application. Based on the graying methods, the anti-counterfeiting QR 2D barcode watermarking scheme based on Discrete Wavelet Transform(DWT) is designed. In the proposed scheme, watermarks embedding as well as watermarking detection are made by a quantization function. In addition, the positions for watermarking are determined by 2D chaos sequence generated from well designed chaos keys. Experimental result shows that the proposed watermarking scheme for QR 2D barcode improves anti-counterfeiting performance without loss of any bar code information.关键词
数字水印/防伪/快速响应矩阵码/二值图像/离散小波变换/二维条码Key words
digital watermarking/anti-counterfeiting/Quick Response(QR) code/binary image/Discrete Wavelet Transform(DWT)/2D barcode分类
信息技术与安全科学引用本文复制引用
谢荣生,赵欢喜,吴克寿..基于离散小波变换的QR二维条码防伪技术[J].计算机工程,2013,(12):126-129,4.基金项目
国家自然科学基金资助项目(60903203)；福建省教育厅JK类科技基金资助项目(JK2012044)；厦门市科技计划基金资助项目(3502Z20103036) （60903203）
