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DCT domain video watermark treatment method based on texture features

A technology of video watermarking and processing method, applied in the fields of information security and video watermarking processing

Inactive Publication Date: 2010-03-03
WUXI CINSEC INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Existing watermarking algorithms have a lot of room for improvement in terms of information embedding capacity and algorithm robustness

Method used

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  • DCT domain video watermark treatment method based on texture features
  • DCT domain video watermark treatment method based on texture features
  • DCT domain video watermark treatment method based on texture features

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the examples.

[0046] 1. Watermark preprocessing

[0047] Two-dimensional digital image scrambling based on two-dimensional Arnold transform is adopted. The scrambling relation is:

[0048] x ′ y ′ = 1 1 1 2 x y mod 1 - - - ( 5 )

[0049]In formula (5), mod 1 represents modulo ...

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Abstract

The invention relates to a video watermark treatment method, in particular to a DCT domain video watermark treatment method based on texture features, which belongs to technologies of information safety. The method comprises the steps of scrambling a watermark; calculating the brightness sum of a video image according to the color value of RGB of the video image, sequencing the brightness sum, selecting a frame for embedding, determining the middle position and the lower position of AC coefficients for embedding the watermark after the scrambling into the video image according to the texture distribution of the video image, carrying out distortion compensation on the video image with the embedded watermark by introducing motion compensation, reducing the video distortion caused during thewatermark embedding, and extracting and detecting the video image with the embedded watermark by utilizing the correlation of the watermark. The method has the advantages of good invisibility, stronganti-attack ability, good safety and real-time property and large capacity of embedded information.

Description

technical field [0001] The invention relates to a video watermark processing method, in particular to a texture characteristic-based DCT domain video watermark processing method, which belongs to information security technology. Background technique [0002] Digital video watermarking is to embed additional property rights information into video streams, such as streaming media and network videos, to achieve copyright protection without affecting the video quality. The most common method of digital video watermark technology is the video watermark embedding method for DCT (Discrete Cosine Transform) domain. It embeds the binary image representing property right information into the AC coefficient and DC coefficient of DCT. This method embeds a large amount of data and conforms to the characteristics of human vision, and is widely used in practice. The simple method of watermark embedding in DCT domain is as follows: first, randomly scramble the watermark image to be embedd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/30H04N19/467H04N19/625
Inventor 周治平张彩虹
Owner WUXI CINSEC INFORMATION TECH
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