H.264/AVC video reversible data hiding method

Abstract

The invention discloses a H.264 / AVC video reversible data hiding method comprising H.264 / AVC video reversible data hiding, hidden data extraction and original video recovery; under the prerequisite of compatible with H.264 / AVC video compression coding standards, the method selects residual error coefficients in a 4*4 sub-block to expand or shift, thus hiding the reversible data; the method is low in calculation complexity, can satisfy real time video application demands, and the hiding data has very little influences on the H.264 / AVC video bitstream code rate; the method pairs two adjacent non-zero residual error coefficients as basic embedding units, can modify a two dimension residual error coefficient histogram to pair the residual error coefficients and to expand or shift, thus embedding the hidden information; the residual error coefficient with big appearance frequency has more bits on the embedded hidden information, thus keeping good perception quality, and providing high embedding capacity; the method can ensure the hidden information to be effectively extracted, thus fully recovering the original video after the hidden information is extracted.

Description

technical field [0001] The invention relates to a reversible data hiding technology, in particular to a method for reversible data hiding of H.264 / AVC video. Background technique [0002] The popularization of the Internet and the rapid development of multimedia technology make the application of digital multimedia reach an unprecedented breadth and depth. People can not only download and copy digital multimedia works conveniently, but also modify the original data content with powerful multimedia tools, and even distribute and disseminate it as the owner. How to ensure that digital media is not misappropriated and illegally disseminated, how to determine the authenticity and integrity of digital media content, prevent malicious tampering, and how to monitor unauthorized users have become hot issues that need to be resolved urgently. Information hiding is an effective technical means for covert communication, copyright protection and content integrity authentication. Rever...

AI Technical Summary

Problems solved by technology

Although image reversible data hiding has been developed rapidly, how to combine the characteristics of H.264 / AVC video data to achieve efficient reversible data hiding has just begun at home and abroad. There are still many difficult problems in the combination of reversible data hiding and video coding. waiting for solution

At present, the existing H.264 / AVC video reversible data hiding method mainly uses a one-dimensional histogram shift method for data embedding of quantized residual coefficients. There is still room for further improvement in the embedding capacity of this method.

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