Graphic watermark embedding method based on virtual graphic barcode

A virtual graphics and watermark embedding technology, applied in image data processing, image data processing, instruments, etc., can solve problems such as lossless recovery, reverse cracked original data, vector map data is easy to be illegally copied, etc., to achieve enhanced robustness Effect

Active Publication Date: 2016-01-20
菏泽建数智能科技有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of existing vector map data that are easy to be illegally copied, reversely cracked, and original data are restored without loss, the present invention provides a method that can effectively solve the problems of vector graphics data being illegally copied, reversely cracked, and original data without loss. Vector graphic watermark embedding method and detection method based on virtual graphic barcode

Method used

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  • Graphic watermark embedding method based on virtual graphic barcode
  • Graphic watermark embedding method based on virtual graphic barcode
  • Graphic watermark embedding method based on virtual graphic barcode

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings.

[0051] refer to Figure 2 to Figure 5 , a vector graphic watermark embedding method of a virtual graphic barcode, said vector graphic watermark embedding method comprising the following steps:

[0052] (1), figure 2 Define a virtual graphic barcode containing copyright information

[0053] (1.1). Modulate the encrypted copyright information into the virtual graphic barcode.

[0054] (1.2), take the true north direction of the map as the reference direction of the virtual graphic barcode, and rotate the virtual graphic barcode by α (0≤α≤360) degrees according to the specific needs of users, so as to prevent illegal users from detecting the virtual graphic barcode;

[0055] (1.3), each spacing λ (0≤λ) in the virtual graphic barcode represents the encrypted copyright information;

[0056] (1.4), if the virtual graphic barcode is larger than the range of the vector gr...

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Abstract

The invention discloses a watermark embedding method for virtual graph bar code-based vector graphs. The watermark embedding method for the virtual graph bar code-based graphs comprises the following steps: (1) defining a copyright information-contained virtual graph bar code; (2) embedding watermark feature points of the virtual graph bar code by adopting an embedding strategy of the watermark feature points of the virtual graph bar code; (3) embedding the virtual graph bar code by adopting a watermark embedding method for the virtual graph bar code; and (4) detecting the watermark feature points of the virtual graph bar code by adopting a detection method for the watermark feature points of the virtual graph bar code.

Description

technical field [0001] The invention belongs to the field of graphic data copyright protection, in particular to a graphic watermark embedding method and detection method based on a virtual graphic barcode. Background technique [0002] With the development and popularization of computer technology and the Internet, as well as the advancement of multimedia data storage and transmission technology, the transmission and sharing of digital products has become very easy, and the illegal copying of digital products has also become very easy, which brings a A series of questions about copyright. In order to protect the interests of copyright owners, it is urgent to find an effective method to protect the intellectual property rights of digital products. [0003] Vector graphics data watermarking algorithm is different from the traditional image-based watermarking algorithm, mainly because vector graphics data does not have the universality of image data applications, etc. It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00G06F21/16
Inventor 杨曦朱文忠任易叶阳张旭东叶露涵朱龙泽
Owner 菏泽建数智能科技有限公司
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