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Image digital watermark embedding and detecting system

A digital watermarking and detection system technology, which is applied in image data processing, image data processing, electrical digital data processing, etc., can solve the problem that the embedded watermark has a small amount of information, weak noise or coding resistance, and is not enough to identify many creator pictures Copyright and other issues

Inactive Publication Date: 2012-07-25
北京中盈信安科技发展有限责任公司
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Problems solved by technology

[0004] Some preliminary digital watermarking technology products that have been realized so far, the amount of embedded watermark information is small, which is not enough to identify the copyright of many creators' pictures, and cannot be widely promoted
When watermarking and extracting a large number of pictures at the same time, the operation time is long and the efficiency is low. The geometric processing, noise or encoding resistance of the image is weak, and the digital watermark is easily damaged; there is no management system for registering, encrypting, querying and retrieving the image copyright protection management system embedded in the image digital watermark

Method used

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  • Image digital watermark embedding and detecting system
  • Image digital watermark embedding and detecting system
  • Image digital watermark embedding and detecting system

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Embodiment Construction

[0055] In order to be able to resist the attack methods commonly used by pirates, such as rotation, cropping, scaling, etc., and to maintain a good visual effect of the embedded watermark image, and to achieve blind extraction during watermark detection, the present invention provides a digital watermark embedding method and a method for extracting a digital watermark in a binary image, wherein the specific flow of the digital watermark embedding method is as follows, see Image 6 :

[0056] Step 101: Acquire source image S1;

[0057] Step 102: Taking one point of the source image S1 or its subset as the center to form multiple concentric circles, thereby dividing the source image into a central circle block and a plurality of ring blocks, according to the color component values ​​of each pixel in the center circle and the ring bands Store in the matrix to obtain the first digital sequence S2;

[0058] Step 103: the central block and the ring block are respectively used as o...

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Abstract

The invention provides an image digital watermark embedding and detecting system which comprises a digital watermark embedding subsystem and a digital watermark detection subsystem. The digital watermark embedding subsystem comprises a binary image watermark acquisition unit, a source image acquisition unit, an embedded position calculating unit and a watermark embedding unit; and a digital watermark extraction subsystem comprises a unit for acquiring an image to be detected, an extraction position calculating unit and a watermark extraction unit. The image digital watermark embedding and detecting system provided by the invention can also comprise a digital watermark management subsystem and a digital watermark information base management subsystem. The image digital watermark embedding and detecting system can be applied to a third-party application system with the copyright authentication qualification so as to provide copyright protection and authentication for image information transmitted on the Internet.

Description

technical field [0001] The present invention relates to the technical field of copyright authentication, specifically relates to the use of binary image digital watermark technology and watermark hiding technology, more specifically the present invention relates to an image digital watermark embedding and detection system. Background technique [0002] With the rapid development of Internet technology, the capacity of digital image information on the Internet has increased dramatically, and the number of related infringements has also gradually increased. Since most digital images have not been processed by digital copyright technology before release, even if there is an infringement, it is impossible to obtain evidence and make an infringement judgment. Digital image copyright system. However, in the existing technology, the common problem is that the information capacity of the digital watermark is small, and it cannot meet the requirements of a large number of enterprise...

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Application Information

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IPC IPC(8): G06T1/00G06F21/00G06F21/16
Inventor 余伟华刘泽吴龙为
Owner 北京中盈信安科技发展有限责任公司
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