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Method for built-in steganography of H.265 video

A built-in, video technology, applied in the field of computer networks, can solve problems such as distortion and drift, and achieve the effect of avoiding distortion and drift

Inactive Publication Date: 2017-09-15
ZHENGZHOU NORMAL UNIV
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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method of built-in steganography for H.265 video, the purpose of which is to solve the distortion drift caused by the information embedding in the H.265 video frame using the prior art technical issues

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  • Method for built-in steganography of H.265 video

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0046] In the embodiment of the present invention, hiding information in the H.265 video stream specifically includes the following steps:

[0047] (1) Entropy decoding and other processes are performed on the original video to obtain quantized DST coefficients;

[0048] (2) Select the 4×4 luminance block with a larger residual absolute value as the block to be embedded;

[0049] (3) Judging w...

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Abstract

The invention discloses a method for built-in steganography of an H.265 video. Information embedding is carried out for the DST (Discrete Sine Transform) coefficient of a 4*4 luminance residual block. First, two directions of distortion drift are determined according to the intra-frame prediction mode of an H.265 video. Then, a triple of a corresponding format is selected for information embedding according to the specific direction of distortion drift. As the triple used has a coefficient compensation effect, 4*4 luminance block pixels causing distortion drift do not change during inverse transformation of the embedded DST coefficient of the residual block, and the purpose of distortion drift control during built-in steganography is achieved. Experimental results show that the method for built-in steganography of an H.265 video provided by the invention can effectively control intra-frame distortion drift, and has good visual imperceptibility and a good visual effect.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and more specifically relates to a method for performing built-in steganography on H.265 video to prevent distortion drift. Background technique [0002] Built-in steganography is the most commonly used method in video steganography, but the change of pixel value caused by the embedding operation will affect the adjacent blocks through intra prediction to generate errors, and the error is passed on through intra prediction and gradually Accumulation leads to severe visual distortion causing intra-frame distortion drift, destroying the imperceptibility of steganography. In order to ensure the visual imperceptibility of secret information, the existing H.264 video information hiding algorithm generally chooses a small embedding amount, and seldom considers the control of intra-frame distortion drift. In order to overcome the intra-frame distortion drift, the existing technology uses the ...

Claims

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Application Information

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IPC IPC(8): H04N19/46H04N19/467H04N19/573H04N19/59
CPCH04N19/46H04N19/467H04N19/573H04N19/59
Inventor 刘云霞刘思刘舒扬冯聪
Owner ZHENGZHOU NORMAL UNIV
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