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Robust video steganography method for reducing H.264 interframe drift distortions

A video steganography and robust technology, applied in the field of information hiding, can solve the problems of video quality degradation, insecurity, insufficient data embedding capacity, etc.

Inactive Publication Date: 2018-11-06
XIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0009] The purpose of the present invention is to provide a robust video steganography method that reduces H.264 inter-frame drift and distortion, which solves the problem of video quality degradation caused by data embedding in the prior art, insufficient data embedding capacity, and inconsistencies in the transmission process. security issues

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Embodiment Construction

[0088] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0089] H.264 / AVC video is mainly composed of I frame, B frame and P frame images. Due to consideration of inter-frame drift and distortion, the selected embedded frame is P frame. A P frame image contains at least one P slice, and a P slice is composed of several P macroblocks and several I macroblocks. The coding mode of the P macroblock is divided into five types: SKIP, Inter_16×16, Inter_16×8, Inter_8×16, and P8×8. When the P macroblock is coded in the Inter_16×16 coding mode, the P macroblock is divided into one 16×16 motion sub-block; when the P macroblock is coded in the Inter_16×8 coding mode, the P macroblock is divided into 2 16×8 motion sub-blocks; when P macroblock adopts Inter_8×16 encoding mode for encoding, P macroblock is divided into two 8×16 motion sub-blocks; when P macroblock adopts P8×8 encoding mode for encoding , the P...

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Abstract

The invention discloses a robust video steganography method for reducing H.264 interframe drift distortions. The method comprises the following steps: step 1, analyzing the interframe drift distortions to obtain the cause of the drift distortions, then classifying the generated drift distortions according to the size, and selecting an embedding position of a DCT brightness coefficient according tothe size of an embedded drift distortion; step 2, carrying out convolutional encoding on an information sequence to be embedded, wherein each input code element corresponds to two output code elements; step 3, embedding an output sequence into the DCT coefficient, after the embedding is completed, performing entropy coding on an H.264 / AVC video stream to form a dense video sequence; and step 4, performing entropy decoding on the H.264 / AVC video stream, extracting an original DCT coefficient, acquiring the output sequence, decoding the output sequence, outputting the information sequence to beembedded, and completing the extraction of the information sequence to be embedded. The robust video steganography method for reducing the H.264 interframe drift distortions provided by the inventionimproves the data embedding capacity, the video quality and the robustness.

Description

technical field [0001] The invention belongs to the technical field of information hiding, and in particular relates to a robust video steganography method for reducing drift and distortion between H.264 frames. Background technique [0002] With the continuous development of today's technology, the transmission of network resources connects us as a whole. Among all transmission resources, video-mediated resources have become an important part of life. Various information security issues occurred during the transmission process, such as Snowden's "Prism Gate" information theft incident, 58.com national resume leakage incident, McDonald's 220W user receipt leakage in India, etc., which caused serious damage to the country, enterprises, and individuals. Economic losses. [0003] Based on this, more and more people pay attention to their own information security issues. Therefore, video steganography technology was proposed. Video steganography refers to hiding the secret in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/467H04N19/625H04N19/122H04N19/13H04N19/184
CPCH04N19/122H04N19/13H04N19/184H04N19/467H04N19/625
Inventor 王林段宁璐
Owner XIAN UNIV OF TECH
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