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An image digital watermark embedding and detection system

A digital watermarking and detection system technology, applied in image data processing, image data processing, instruments, etc., can solve problems such as long operation time, inability to carry out large-scale promotion, and small amount of embedded watermark information

Inactive Publication Date: 2016-08-24
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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  • An image digital watermark embedding and detection system
  • An image digital watermark embedding and detection system
  • An image digital watermark embedding and detection 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 detection system, including a digital watermark embedding subsystem and a digital watermark detection subsystem; the digital watermark embedding subsystem includes: a binary image watermark acquisition unit; a source image acquisition unit; an embedding position calculation unit ; Watermark embedding unit; digital watermark extraction subsystem includes: image acquisition unit to be detected; extraction position calculation unit; watermark extraction unit. The image digital watermark embedding and detection system of the present invention may also include a digital watermark management subsystem and a digital watermark information database management subsystem. The invention can be applied to a third-party application system with copyright authentication qualification, and provides 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00G06F21/16
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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