Method of protecting MPEG-2 video data

A technology of MPEG-2 and video data, applied in image data processing, image data processing, digital video signal modification, etc., can solve problems such as low efficiency and error-prone, and achieve good robustness, low complexity, and invisible Good performance and robustness

Inactive Publication Date: 2006-01-11
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The downside of this approach is that it is inefficient and error-prone
However, whether the broadcast advertisements have been approved or not needs to be monitored by the industrial and commercial management department. With the increase of advertisements, the manual method can no longer meet the requirements.

Method used

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  • Method of protecting MPEG-2 video data
  • Method of protecting MPEG-2 video data
  • Method of protecting MPEG-2 video data

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Embodiment Construction

[0044] Digital TV is the development direction of TV in the future, but while digital TV brings great convenience to society and people, it also brings convenience to piracy and illegal use of information. The copyright protection of digital TV content is of great significance. When a TV station produces a TV program, it can embed its own copyright information as a watermark into the TV signal. When a similar signal is found, the watermark can be detected to determine the ownership of the copyright.

[0045] Advertising has a wide and deep impact on the society and the public, so it must be effectively supervised. At the same time, TV advertisements have important commercial value for enterprises. The broadcast of advertisements usually costs a fortune. One of the most concerned issues for advertisers is whether their advertisements are broadcast as scheduled or not, which requires effective monitoring methods.

[0046] When the advertisement is submitted for review, the ind...

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Abstract

This invention relates to a method for protecting MPEG-2 video data, which utilizes the compression encode method and grammar structure to insert watermark in the MPEG-2 compression code stream without altering the code rate. After decoding to the video compression code stream with inserted watermark and the original video code steam, man-eye cannot distinguish the difference between them, yet digital watermark provides a method for distinguishing them, which can protect video data or files transmitted via network or the broadcast TV system or can be used in monitor of TV advertisements.

Description

technical field [0001] The present invention is a video watermarking method based on the compressed domain, according to the characteristics of the MPEG-2 encoding algorithm and the structure of the MPEG-2 compressed code stream, it realizes fast embedding of the watermark, keeps the code stream unchanged and has good video decoding quality, It belongs to the field of multimedia signal processing. Background technique [0002] In recent years, digital watermarking technology has demonstrated its importance in many application fields, and has been widely valued. Although most of the current data hiding research and literature focus on image watermarking, digital video watermarking and information hiding techniques are also receiving more and more attention. Video watermarking methods are divided into two types according to the data domain embedded in the watermark: compressed domain methods and uncompressed domain methods. Due to the huge amount of video data, it is necessa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26G06T1/00H04N19/467
Inventor 刘红梅邵凤莲黄继武
Owner SUN YAT SEN UNIV
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