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Invisible watermark identification method and apparatus, and storage device

A recognition method and invisible technology, applied in image data processing, instruments, electrical components, etc., can solve problems such as invisible watermarks that cannot be recognized

Inactive Publication Date: 2018-05-15
明鉴方寸区块链科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

However, when the existing technology embeds the invisible watermark in some positions of the file, the invisible watermark cannot be recognized

Method used

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  • Invisible watermark identification method and apparatus, and storage device
  • Invisible watermark identification method and apparatus, and storage device
  • Invisible watermark identification method and apparatus, and storage device

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0047] Aiming at the method of embedding an invisible watermark by changing the value of the first row and fourth column of the upper triangular matrix to the information value of the invisible watermark, this case proposes a technical means for identifying the invisible watermark. The key lies in: processing the value of the first row and the fourth column of the upper triangular matrix containing the invisible watermark information to obtain the invisible wat...

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Abstract

The invention relates to an invisible watermark identification method and apparatus, and a storage device. The hidden watermark identification method comprises the following steps: obtaining a component image from an image containing an invisible watermark, and dividing the component image to obtain pixel blocks; selecting a pixel block containing invisible watermark information from the pixel blocks; performing QR decomposition on the pixel block containing the invisible watermark information to obtain an upper triangular matrix; extracting binary sequence information of the invisible watermark from the first row and fourth column of the upper triangular matrix; obtaining watermark component information according to the binary sequence information of the invisible watermark; processing the watermark component information to obtain an invisible watermark extraction map; and decoding the invisible watermark extraction map to identify the invisible watermark.

Description

technical field [0001] The present invention relates to the technical field of invisible watermarks, in particular to an invisible watermark identification method, device and storage device. Background technique [0002] With the development of information dissemination technology, information copyright protection has become an urgent problem to be solved. Although traditional encryption technology has a protective effect in the process of information transmission, once the data is received and decrypted, its protective effect will also disappear. Therefore, traditional encryption techniques can only meet limited requirements. [0003] In order to solve the above problems, watermarking technology is proposed. According to the embedded main media, watermarks can be divided into image watermarks, audio watermarks, video watermarks, text watermarks and network watermarks. Different from traditional encryption technology, the purpose of watermark technology application is not...

Claims

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Application Information

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IPC IPC(8): H04N1/32G06T1/00
CPCH04N1/32144G06T1/0021
Inventor 杜辉斌
Owner 明鉴方寸区块链科技有限公司
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