Document anti-copying method and system based on image scrambling

Abstract

The invention provides a document anti-copying method and system based on image scrambling. According to the method, the secret mark watermark subjected to the image scrambling operation is added intothe document, so that whether the document is an original document or not can be quickly recognized and the document number can be quickly inquired through equipment such as a mobile phone and a detector, related information of the document can be inquired in a database, and efficient management of the paper document is realized. According to the scheme, a secret mark watermark method is combined, the scrambled image serves as the secret mark watermark to be added into the original document, the secret mark watermark disappears after the original document is copied, and people distinguish theoriginal document from the copy document by detecting whether the secret mark watermark exists or not. According to the method, special paper or special ink does not need to be adopted, the functionsof copy prevention and rapid verification of the documents can be achieved only by printing the specific secret mark watermarks in the documents together in the document printing or printing process,and the automation degree of document management is improved.

Description

technical field [0001] The invention relates to a method for preventing copying of documents, in particular to a method and system for preventing copying of documents based on image scrambling. Background technique [0002] Faced with the management of a large number of paper documents, people are in great need of a tool for quickly and automatically detecting the authenticity of documents and querying the content of documents. [0003] At present, the anti-counterfeiting of documents usually adopts physical anti-counterfeiting technology, through the use of special materials or special processes in the paper production process to form technical barriers, such as special paper, special ink, laser film, special printing process, etc. However, the most common color-changing ink costs about 2,000 yuan per kilogram, and a ton of laser paper is as high as 20,000 yuan, which is four times higher than ordinary paper, and these consumables have a greater impact on process variables ...

AI Technical Summary

Problems solved by technology

However, the most common color-changing ink costs about 2,000 yuan per kilogram, and a ton of laser paper is as high as 20,000 yuan, which is four times higher than ordinary paper, and these consumables have a greater impact on process variables due to different batches.

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