1. Robust authentication for paper-based text documents based on text watermarking technology
- Author
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Zong Ming Guo, Tong Zhang, Yuxin Liu, Xi Feng Fang, Wei Guo, and Wen Fa Qi
- Subjects
Scheme (programming language) ,Computer science ,Data_MISCELLANEOUS ,02 engineering and technology ,Pattern Recognition, Automated ,Image (mathematics) ,0502 economics and business ,Computer Graphics ,0202 electrical engineering, electronic engineering, information engineering ,Digital watermarking ,Computer Security ,Language ,computer.programming_language ,Authentication ,Information retrieval ,Content integrity ,Applied Mathematics ,05 social sciences ,Watermark ,General Medicine ,Paper based ,Data Compression ,Computational Mathematics ,Nonlinear Dynamics ,Modeling and Simulation ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,Embedding ,020201 artificial intelligence & image processing ,General Agricultural and Biological Sciences ,computer ,Algorithms ,Medical Informatics ,Software ,050203 business & management - Abstract
Aiming at the problem of easy tampering and difficult integrity authentication of paper text documents, this paper proposes a robust content authentication method for printed documents based on text watermarking scheme resisting print-and-scan attack. Firstly, an authentication watermark signal sequence related to content of text document is generated based on the Logistic chaotic map model; then, the authentication watermark signal sequence is embedded into printed paper document by using a robust text watermarking scheme; finally, the watermark information is extracted from scanned image of paper document, and compared with the authentication watermark information calculated in real time by the text document content obtained by OCR technology, thereby performing content integrity authentication of the paper text documents. Experimental results show that our method can achieve the robust content integrity authentication of paper text documents, and can also accurately locate the tampering position. In addition, the document after embedding the watermark information has a good visual effect, and the text watermarking scheme has a large information capacity.
- Published
- 2019