Wavelet-domain video watermarking method based on fractal theory

A fractal theory, video watermarking technology, applied in selective content distribution, image communication, electrical components, etc., can solve problems such as the inability to achieve effective protection of digital video copyright, affecting the development of video watermarking technology, and taking a long time to achieve invisible High performance, high practicability, and short time-consuming effect

Inactive Publication Date: 2017-02-01
QINGDAO UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing video watermarking technology has a large amount of calculation and takes a long time to affect the development of video watermarking technology, and thus cannot realize the effective protection of digital video copyright, the present invention provides a wavelet domain video watermarking based on fractal theory method

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  • Wavelet-domain video watermarking method based on fractal theory
  • Wavelet-domain video watermarking method based on fractal theory
  • Wavelet-domain video watermarking method based on fractal theory

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Embodiment 1

[0027] A wavelet domain video watermarking method based on fractal theory, comprising the following steps:

[0028] Step 1: Subdividing the carrier video into frames, and numbering all frames from 1 to n in sequence, where n is an integer;

[0029] Step 2: selecting a key frame from all the frames;

[0030] Step 3: converting the key frame and the watermark image into YUV format, and then carrying out L-layer HAAR wavelet transform to the Y, U, and V components of the key frame and the watermark image respectively;

[0031] Step 4: divide the LL, HL, LH and HH of the HAAR wavelet transform from the L layer to the second layer of the Y, U, V three components of the key frame and the watermark image into a wavelet tree D for storage, and store The LL, HL, LH and HH of the HAAR wavelet transform from the L-1 layer to the first layer of the three components of the Y, U, and V components of the key frame and the watermark image are divided into wavelet tree R for storage;

[0032...

Embodiment 2

[0050] A wavelet domain video watermarking method based on fractal theory, comprising the following steps:

[0051] Step 1: Subdividing the carrier video into frames, and numbering all frames from 1 to n in sequence, where n is an integer;

[0052] Step 2: selecting a key frame from all the frames;

[0053] Step 3: converting the key frame and the watermark image into YUV format, and then carrying out L-layer HAAR wavelet transform to the Y, U, and V components of the key frame and the watermark image respectively;

[0054] Step 4: decompose LL, HL, LH and HH of the HAAR wavelet transform from the L layer to the second layer of the Y, U, V three components of the key frame and the watermark image into a wavelet tree D, and the LL, HL, LH and HH of the HAAR wavelet transform of the L-1 layer to the first layer of the Y, U, V three components of the key frame and the watermark image are decomposed into a wavelet tree R;

[0055] Step 5: combining the Y, U and V components of t...

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Abstract

The invention relates to the technical field of processing of video images, and in particular relates to a wavelet-domain video watermarking method based on a fractal theory. In a watermark embedding process, firstly, wavelet transform of extracted key frames and watermark images is respectively carried out simultaneously; furthermore, decomposition of a wavelet tree D and a wavelet tree R is carried out; and then, direct multiplication by a strength coefficient is correspondingly embedded therein. According to the wavelet-domain video watermarking method based on the fractal theory disclosed by the invention, a method for embedding a watermark into a video is provided; therefore, the copyright of the video can be effectively protected; the problems of high video capacity, high calculation complexity and difficult watermark embedding can be solved; the watermark is embedded into the video through the method provided by the invention; the calculation amount is low; the consumed time is short; the quality of a video file cannot be influenced; the video after the watermark is embedded is high in invisibility and high in availability and robustness; and the method disclosed by the invention has a very important meaning for protecting the copyright of the video.

Description

technical field [0001] The invention relates to the technical field of video image processing, in particular to a wavelet domain video watermarking method based on fractal theory. Background technique [0002] In recent years, with the rapid popularization and development of the Internet, while the dissemination of multimedia information has become more and more convenient and fast, it has also brought many problems involving copyright and ownership disputes. Video watermarking technology realizes copyright and ownership protection of videos by embedding watermark information into videos. In terms of video watermarking research, due to the large amount of video information and the complexity of watermark embedding and extraction processes, the development of video watermarking technology has been relatively slow, and the existing multiple video coding formats have caused limitations in the development of watermarking technology. Therefore, there is no mature video watermark...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/8358
CPCH04N21/8358
Inventor 杨树国梁家栋李春霞刘庆亮隋淑娇
Owner QINGDAO UNIV OF SCI & TECH
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