首页> 外文会议>International Conference on Digital Printing Technologies: Final Program and Proceedings; 20050918-23; Baltimore,MD(US) >Extrinsic Signature Embedding in Text Document Using Exposure Modulation for Information Hiding and Secure Printing in Electrophotography
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Extrinsic Signature Embedding in Text Document Using Exposure Modulation for Information Hiding and Secure Printing in Electrophotography

机译:使用曝光调制在文本文档中嵌入外部签名,以实现电子照相中的信息隐藏和安全打印

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摘要

Printer identification based on a printed document can provide forensic information to protect copyright and verify authenticity. In addition to intrinsic features (intrinsic signatures) of the printer, modulating the printing process to embed specific signature (extrinsic signatures) will further extend the encoding capacity. Some features generated by modulating EP process such like raggedness of the edge in the text, can be designed and utilized to help develop the extrinsic signature. By increasing the level of modulation, which increase reliability of detection and thus capacity, we can drive the extrinsic signature to a point without perceptual degradation of the image quality. In this paper, we will investigate embedding extrinsic signature in text documents using laser intensity as a signal modulation source and develop extrinsic signatures using both frequency as well as amplitude modulation. Preliminary experimental results showed that it is feasible to embed detectable extrinsic signatures in text characters without degrading perceptual text quality.
机译:基于打印文档的打印机标识可以提供法证信息,以保护版权并验证真实性。除了打印机的固有功能(固有签名)之外,将打印过程调制为嵌入特定签名(固有签名)将进一步扩展编码能力。可以设计和利用通过调制EP过程生成的某些功能(例如文本边缘的凹凸不平)来帮助开发外部签名。通过增加调制级别,从而提高检测的可靠性,从而提高容量,我们可以将外部签名驱动到一个点,而不会导致图像质量的感知下降。在本文中,我们将研究使用激光强度作为信号调制源在文本文档中嵌入外部签名,并使用频率和幅度调制来开发外部签名。初步的实验结果表明,在文本字符中嵌入可检测的外部签名而不降低感知文本质量是可行的。

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