摘要
二维条码技术和数字水印技术都是防伪领域中的重要技术和研究热点。本文设计并实现了一整套基于PDF417二维条码的证件管理系统,在此平台基础上提出了对编进二维条码的照片信息采用基于DCT中频的数字水印技术的方法;同时,为了满足水印的鲁棒性,对水印采用了Arnold对称性变换。实验结果表明,该方法得到的水印图像有较好的透明性和鲁棒性,二维条码与数字水印技术的结合能够实现真正意义上的证件防伪。
Both 2-D bar code and digital watermarking techniques are the important parts and research focuses in anticounterfeit fields. This text designs and realizes a whole set of certificate administration system based on PDF417. On this platform the method for encoded photos is proposed, which adopts the digital watermarking technique based on the DCT intermediate frequency. Meanwhile the Arnold transform is used for the robustness of watermarking. The experimental results indicate that the obtained watermarked images have good transparency and robustness. The combination of 2-D bar code and digital watermarking can realize real anti counterfeit certificates.
出处
《计算机工程与科学》
CSCD
2006年第4期42-44,共3页
Computer Engineering & Science
