Digital video embossed stamp embedding and extracting method

A technology of digital video and extraction method, applied in the direction of digital video signal modification, selective content distribution, electrical components, etc., can solve the problems of watermark being easily cut off and watermark information loss, etc.

Active Publication Date: 2019-03-15
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This provides an opportunity for video thieves, so the added watermark is easily cut off, resulting in complete loss of watermark information

Method used

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  • Digital video embossed stamp embedding and extracting method
  • Digital video embossed stamp embedding and extracting method
  • Digital video embossed stamp embedding and extracting method

Examples

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Embodiment Construction

[0032] Examples of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The examples described below by referring to the accompanying drawings are illustrative only for explaining the present invention and should not be construed as limiting the present invention.

[0033] Such as figure 1 As shown, the present invention embeds a digital steel seal that does not block the original color information of the video to the digital video, and designs a matching steel seal extraction algorithm for this embedding method. The specific implementation steps are as follows:

[0034] Add stamp:

[0035] Step 1: Stamp image preprocessing, such as figure 2 Shown first reads the image that was added to the video as a stencil. In order to make the stamped image meet the algorithm requirements, the ori...

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Abstract

The invention relates to a digital video embossed stamp embedding and extracting method, belonging to the field of digital video watermarks. When an embossed stamp needs to be added, an original embossed stamp image needs to be binarized so as to remove color information in the image but maintain shape and structure information in the image alone; then an edge of the binarized image is extracted according to the obtained binarized image, and then the edge is enhanced through an expansion algorithm; finally, the edge image and the binarized image are fused so as to obtain an embossed stamp image, and the embossed stamp image is added to a video. The embossed stamp extraction method can extract a clear binarized image with embossed stamp image edge information. A reliable, visible watermarkis printed on the video without blocking original color information of the video, so that the video copyright is protected, and the impact of the visible watermark on watch effect is reduced.

Description

technical field [0001] The invention belongs to the field of digital video watermarking. Background technique [0002] With the rapid development of information technology and network, digital products can spread rapidly in the network, and can be downloaded or used by people very conveniently. At the same time, it also creates convenience and opportunities for illegal acts such as piracy and plagiarism that infringe on the interests of digital product creators. Digital video, as one of the digital products widely disseminated in the network, also faces similar problems. In order to protect the intellectual property rights and interests of digital video creators, it is necessary to add special information that can prove the copyright of the video creators to the video. This special information added to the video code stream is called digital video watermark. Watermark, at the beginning, refers to the picture, number, text and other information added to the paper in the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/467H04N21/8358
CPCH04N21/8358H04N19/467
Inventor 孙光民朱子熙陈佳阳
Owner BEIJING UNIV OF TECH
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