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Blind watermark implantation method and device, blind watermark detection method and device, equipment and storage medium

A technology of blind watermarking and implantation position, applied in the field of image processing, can solve the problem of not taking into account the robustness of the watermark and the resistance to cropping attacks, and achieve the effect of high resistance.

Active Publication Date: 2020-11-13
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the watermark implanted by the above two watermark implantation methods cannot take into account the robustness of the watermark and the ability to resist clipping attacks.

Method used

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  • Blind watermark implantation method and device, blind watermark detection method and device, equipment and storage medium
  • Blind watermark implantation method and device, blind watermark detection method and device, equipment and storage medium
  • Blind watermark implantation method and device, blind watermark detection method and device, equipment and storage medium

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Embodiment Construction

[0045] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0046] First, the nouns involved in the embodiments of the present application are introduced.

[0047] Digital watermarking refers to embedding specific information into digital signals, which may be audio, pictures, or videos. If a signal with a digital watermark is copied, the embedded information will also be copied. Digital watermarking can be divided into two types: floating and hidden. The former is a visible watermarking (visible watermarking), and the information contained in it can be seen while watching pictures or videos. In general, floating watermarks usually contain the name or logo of the copyright owner. Hidden watermark adds watermark by changing part of the data in the digital signal, and this kind of data ch...

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Abstract

The invention discloses a blind watermark implantation method and device, a blind watermark detection method and device, equipment and a storage medium, and relates to the field of image processing. The blind watermark implantation method comprises the steps of obtaining a target image frame in a to-be-encrypted video; determining the implantation position of a blind watermark in the frequency domain of the target image frame; calculating a blind watermark pixel value through a Sobel operator according to the watermark matrix of the blind watermark and the frequency domain coefficient at the implantation position; filling the frequency domain pixel point of the implantation position with the blind watermark pixel value to obtain an image frame after the blind watermark is implanted; and performing flag bit filling in the spatial domain of the implanted image frame to obtain an encrypted image frame. According to the method, the blind watermark implanted in the image frame can simultaneously achieve high robustness and high resistance to cutting attack.

Description

technical field [0001] The present application relates to the field of image processing, in particular to a blind watermark implantation method, detection method, device, equipment and storage medium. Background technique [0002] Due to the rapid development of Internet technology, more and more videos are facing the risk of being pirated and leaked, which will cause significant losses to the copyright owner. Therefore, it is necessary to strengthen the copyright protection of videos and the traceability of leaked videos. Among them, video watermarking It is an important part of video copyright protection. [0003] For video watermarking, the watermark encryption of the image can be completed by directly implanting information at the pixel level, or the image can be converted from the spatial domain to the frequency domain, and the image watermark can be completed by implanting information in the frequency domain encryption. [0004] However, the watermark implanted by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021
Inventor 吴韬方杨徐敘遠
Owner TENCENT TECH (SHENZHEN) CO LTD
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