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Digital text watermark embedding and detecting method and device

A watermark embedding and text technology, applied in image data processing, image data processing, instruments, etc., can solve the problem of watermark information being easily tampered, and achieve the effect of increasing privacy, enhancing privacy, and preventing tampering.

Pending Publication Date: 2019-10-11
CHINA MOBILE SUZHOU SOFTWARE TECH CO LTD +1
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  • Description
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Problems solved by technology

[0004] In order to solve the problem that the watermark information of the existing digital text embedding watermark method is easy to be tampered with, the embodiment of the present invention provides a digital text watermark embedding and detection method and device

Method used

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  • Digital text watermark embedding and detecting method and device
  • Digital text watermark embedding and detecting method and device
  • Digital text watermark embedding and detecting method and device

Examples

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Embodiment Construction

[0122] In order to solve the problem that watermark information is easily tampered with in the existing digital text embedding watermark method, the present invention proposes a digital text watermark embedding and detection method and device.

[0123] The implementation principle of the digital text watermark embedding method provided by the embodiment of the present invention is as follows: in the digital text watermark embedding method provided by the embodiment of the present invention, the server encodes the copyright information of the digital text requested to embed the watermark, wherein the copyright information is used to represent the The attribute information of the sending end of the digital text, split the encoded string into several substrings, and judge whether each character of the digital text needs to be embedded with a watermark according to the chaotic algorithm, that is, calculate the characters that need to be embedded with a watermark in the digital text ...

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Abstract

The invention discloses a digital text watermark embedding and detecting method and device, solves the problem that watermark information of an existing digital text watermark embedding method is easily tampered, and improves the effectiveness of digital copyright protection. The digital text watermark embedding method comprises: encoding copyright information of a digital text requesting watermark embedding, and the copyright information being used for representing sending end attribute information of the digital text; splitting a character string obtained after encoding into a plurality of sub-character strings; judging whether each character of the digital text needs to be embedded with a watermark or not according to a chaos algorithm; and selecting a sub-character string for judging the character which needs to be embedded with the watermark, and embedding the sub-character string into the corresponding character.

Description

technical field [0001] The invention relates to the technical field of digital copyright protection, in particular to a digital text watermark embedding and detection method and device. Background technique [0002] Digital watermarking technology is to embed some identification information into digital carriers such as multimedia, documents or software. Through these identification information hidden in the carrier, it can achieve the purpose of confirming content creators, buyers, transmitting secret information or judging whether the carrier has been tampered with. . Digital watermarking is an effective method to protect information security, realize anti-counterfeiting traceability and digital copyright protection. [0003] Existing digital watermarking technology for digital texts has certain limitations, for example: perform variant operation on text to generate deformed characters, encode the generated deformed characters and add them to digital texts as digital wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021G06T2201/0062
Inventor 董军李莉王宝晗
Owner CHINA MOBILE SUZHOU SOFTWARE TECH CO LTD
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