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Watermark processing method and watermark processing system

A processing method and processing system technology, applied in the field of watermark processing method and watermark processing system, can solve the problems of difficulty in creating semantically and logically coherent paragraphs, poor concealment effect, and difficult implementation, and achieve the effect of watermark processing

Active Publication Date: 2017-01-04
BEIJING UNIV OF POSTS & TELECOMM
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  • Description
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Problems solved by technology

However, due to the ambiguity and complexity of Chinese language, it is difficult to create semantically and logically coherent paragraphs, which is difficult to implement and has poor concealment effect

Method used

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  • Watermark processing method and watermark processing system
  • Watermark processing method and watermark processing system
  • Watermark processing method and watermark processing system

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0057] For the sake of brevity and intuition in description, the solution of the present invention is described below by describing several representative implementation manners. Numerous details in the embodiments are only used to help the understanding of the solutions of the present invention. But obviously, the technical solutions of the present invention may not be limited to these details when implemented. In order to avoid unnecessarily obscuring the solution of the present invention, some embodiments are not described in detail, but only a framework is given. Hereinafter, "including" means "including but not limited to", and "according to..." means "at least according to, but not limited to only based on...". Due to the language habits of Chinese, when t...

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Abstract

The invention provides a watermark processing method and a watermark processing system. Encode the watermark string information into a quinary digital stream, and add the quinary start check information and the quinary end check information to the pentary digital stream to obtain the pentad embedded information; load pdf file, unify the standard blank characters of the pdf file in hexadecimal mode, and modify the standard blank characters according to the preset mapping relationship between the five-digit content and the hexadecimal representation of the standard blank characters Embed the quinary embedded information into the pdf file; parse the pdf file to obtain the content of the standard blank characters, extract the quinary embedded information according to the preset mapping relationship, and check the information based on the quinary start and the end check information of the quinary system extract the quinary code stream from the embedded information of the quinary system, and decode the quinary code stream into the watermark string information.

Description

technical field [0001] The invention belongs to the technical field of digital watermarks, in particular to a watermark processing method and a watermark processing system. Background technique [0002] The so-called digital watermark is to add some digital information to data multimedia (such as image, sound, video signal, etc.) to achieve the functions of document authenticity identification and copyright protection. The embedded watermark information is hidden in the host file without affecting the observability and integrity of the original file. The process of digital watermarking is to embed some information that can prove copyright ownership or track infringement into protected digital objects (such as still images, videos, audios, etc.), which can be the author's serial number, company logo, meaningful text, etc. . There are many concepts that are similar or closely related to watermarking. Judging from the current literature, there are already concepts such as Inf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/16
Inventor 郭燕慧李祺高晓梦杨昕雨
Owner BEIJING UNIV OF POSTS & TELECOMM
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