Scanner having digital copyright protection function and scanning method thereof

Abstract

The invention relates to a scanner having functions of digital copyright protection and scan source tracing, comprising: a digital watermark creating module for creating a digital watermark; a discrete cosine transform module for processing scan data to prepare for subsequent watermark embedding; a digital watermark embedding module for embedding the digital watermark into a scan data; and a discrete cosine inverse transform module for hiding the digital watermark. The scan method comprises the following steps of: creating a digital watermark based on the scan associated information as a resource mark; calling the scan data of the discrete cosine transform process, adding the digital watermark into a discrete cosine transform frequency domain space; embedding the digital watermark after the chaotic process into a scan data; and calling a discrete cosine inverse transform to hide the digital watermark.

Description

technical field [0001] The invention relates to a scanner, in particular to a scanner with functions of digital copyright protection and scanning source tracking and a scanning method thereof. Background technique [0002] With the continuous update and development of information technology, all kinds of traditional publications, whether it is photographic works, print advertisements or book manuscripts, use the medium of the Internet to expand the scope of product dissemination and speed up the dissemination. [0003] In the past, when information was stored and transmitted in the form of physical media, copyrighted physical media was cheaper, time-saving, and high-quality than self-copying, which made copyright issues not very prominent in the past. However, with the popularization of computer and network applications, piracy has become a serious problem. Today, when the Internet is so common, whether it is a large media company or an individual author, they can easily pu...

AI Technical Summary

Problems solved by technology

At the same time, it is also necessary to add scanning device hardware information and scanning user information (if the user allows) to the embedded information to track the source of the scanned image and limit the illegal dissemination of the scanned image from the root.

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