Real-time digital video watermarking method based on MPEG-2 standard

Abstract

The technical scheme provides a real-time digital video watermarking method based on an MPEG-2 (moving pictures experts group-2) standard, comprising the following steps of: embedding watermarking information obtained after reprocessing and coding and used as user information into image layer expansion and user data fields of each frame by analyzing the MPEG-2 protocol standard and using available information resources in the MPEG-2 standard; and ensuring robustness and nonvisibility of watermarking on the condition that video quality and a code stream format are not influenced. The real-time digital video watermarking method based on the MPEG-2 standard can effectively resist frame deletion attack, has a simple realization mode, is used for solving various problems in the prior art that spatial synchronous distortion and photometric distortion can not be effectively resisted. The technical scheme can be used for judging copyright ownership or hiding, secretly carrying and transmitting information, and the like.

Description

Technical field [0001] The invention relates to a digital video watermarking method, in particular to a digital video watermarking method based on the MPEG-2 standard, and belongs to the field of digital video processing. Background technique [0002] With the popularization of network communication, many traditional media content has been transformed to digital, and will occupy a huge market share in e-commerce, such as online sales of mp3, the vigorous promotion of digital cinema, online pictures, e-book sales, etc., in wireless In the field, with the evolution of mobile networks from the second to the third generation, mobile users will be able to access digital media content on the Internet conveniently and quickly. The application of digital media content based on wired or wireless networks is about to become a new tradition in the information age. However, the security of digital media content has become a bottleneck, restricting the progress of many commercial applications...

AI Technical Summary

Problems solved by technology

[0010] It can be seen from the above discussion that the traditional MPEG-2 video watermarking technology is generally used to embed and extract watermarks in the air domain, transform domain and compression domain, and select appropriate algorithms to carry out, although the above methods can resist one or more types of watermarking to a certain extent. To a certain extent, it has good robustness and invisibility, but it is difficult to meet the user's satisfaction index, and it cannot effectively resist spatial synchronization distortion and photometric distortion at the same time.

In practical applications, such as video editing, video may undergo multiple transformations and processing, and photometric distortion and spatial synchronization distortion often occur simultaneously.

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