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A method of reversible steganography for HEVC video without distortion drift based on tuples

A multi-group, distortion-free technology applied in the field of information security to avoid distortion drift

Inactive Publication Date: 2019-06-25
ZHENGZHOU NORMAL UNIV
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[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a HEVC video reversible steganography method based on tuples without distortion drift. Write

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  • A method of reversible steganography for HEVC video without distortion drift based on tuples
  • A method of reversible steganography for HEVC video without distortion drift based on tuples
  • A method of reversible steganography for HEVC video without distortion drift based on tuples

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[0046] 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.

[0047] The HEVC video reversible steganography method based on tuple without distortion drift provided by the embodiment, its embedding process is as follows figure 1 shown, including the following steps:

[0048] (1) Entropy decoding is performed on the original video to obtain quantized DST coefficients;

[0049] (2) Select the 4×4 luminance block whose residual absolute value is greater than ...

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Abstract

The invention discloses a reversible steganographic method based on multi-component system and without distortion drift for HEVC videos. The method comprises embedding and extraction; on an embedding end: performing entropy decoding processing on an original video to obtain a quantized DST coefficient; using a 4 * 4 brightness block having a residual absolute value greater than a threshold as a candidate embedding block; embedding information in an embedding coefficient in the multi-component system in the candidate embedding block, adjusting a compensation coefficient to compensate an intra-block embedding error of embedding so as to eliminate the transmission of the error between the blocks, performing entropy decoding on a received target embedded video to obtain an intra-frame prediction mode and the quantized DST coefficient of the video frame; using a 4 * 4 brightness block having a residual absolute value greater than a threshold as a candidate extraction block; extracting information according to a specified position coefficient of the extraction block, and restoring the video by using a reversible operation of the multi-component system; and decrypting the extracted information to obtain original secrete information. The defect of distortion drift caused by HEVC intra-frame information embedding is overcome, and reversible steganography is realized.

Description

technical field [0001] The invention belongs to the technical field of information security, and more specifically relates to a multi-group-based distortion-free HEVC video reversible steganography method. Background technique [0002] Reversible steganographic technology can embed specific information into the carrier and allow legitimate users to restore the original carrier without distortion after extracting the information. It has received extensive attention in military, medical, judicial and other fields that are sensitive to image content. Built-in steganography is the most suitable method in the video steganography method, but the change of pixel value caused by the embedding operation will affect the adjacent blocks through the intra prediction to generate errors, and the error is passed on through the intra prediction and gradually Accumulation leads to severe visual distortion causing intra-frame distortion drift, destroying the imperceptibility of steganography....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/467H04N17/00
CPCH04N17/00H04N19/467
Inventor 刘云霞刘思冯聪
Owner ZHENGZHOU NORMAL UNIV
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