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Blind digital watermark detection method and system

A technology of digital watermarking and detection method, applied in the field of information security, can solve the problems of unable to extract watermark information correctly, unable to know the characteristics of embedded watermark information, etc., to achieve the effect of enhancing feasibility and improving practicability

Inactive Publication Date: 2013-01-30
DIGITAL VIDEO NETWORKS BEIJING +1
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Problems solved by technology

However, for a certain video information, it may be used by multiple manufacturers or TV stations and other relevant departments to embed watermarks with different characteristics. Therefore, for a similar watermarked video file, it is impossible to know the characteristics of the embedded watermark information, so that it cannot be extracted correctly. watermark information

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  • Blind digital watermark detection method and system
  • Blind digital watermark detection method and system

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Embodiment Construction

[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0035] The technical scheme of the present invention considers that a truly practical blind watermarking scheme should be: when watermarking is detected, it is not known whether the multimedia file is embedded with a watermark, if there is a watermark, what kind of watermarking information is embedded, and no original multimedia data participates in the watermarking detection.

[0036] First of all, the template processing of digital watermark refers to assigning an ID (Identification) number to each identification file, and binding the identification file itself with the ID number to generate a new file as a real digital watermark file, that is to say, the general text Identification information such as images or pictures cannot be used as a watermark file for watermark embedding processing without ...

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Abstract

The invention discloses a blind digital watermark detection method and a blind digital watermark detection system. The method comprises the following steps: binding an identification file and an ID number so as to form a digital watermark file, and storing the identification file, the feature information of the identification file and the ID number into a database; embedding the ID number and the identification file into a carrier file, and storing the ID number and a corresponding embedding algorithm thereof into the database; extracting the ID number of the digital watermark file from the carrier file, matching the extracted ID number with the ID number in the database, and according to the ID number of the digital watermark file, acquiring the feature information and embedding algorithm of the corresponding identification file from the database; and according to an identification file extraction algorithm and feature information corresponding to the acquired embedding algorithm, extracting the identification file of the digital watermark file of the carrier file. By using the technical scheme in the invention, huge amounts of multimedia data can be subjected to quick and simple watermark detection and extraction.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a blind digital watermark detection method and system. Background technique [0002] Digital watermark technology is a digital content protection technology that uses redundant components in digital multimedia (watermark carrier) information to embed copyright identification information (watermark). Mainly used in broadcast monitoring, copyright protection, digital fingerprint, content identification, copy control and other fields. Watermarks can be text, pictures, serial numbers and other identification information. After the watermark is embedded in the carrier file, it becomes an inseparable part of the carrier data, and can exist through some operations that do not destroy the use value or commercial value of the carrier data. The processing flow of digital watermark is generally divided into the following three processes: watermark generation, watermark embedd...

Claims

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Application Information

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IPC IPC(8): G06T1/00
Inventor 赵志超马兆丰蒋铭刘婷闫玺玺黄勤龙张德栋
Owner DIGITAL VIDEO NETWORKS BEIJING
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