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
CN1719898AInactive Publication Date: 2006-01-11SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUN YAT SEN UNIV
Publication Date
2006-01-11
Estimated Expiration
Not applicable · inactive patent

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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.
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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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