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A non-additive steganography method to enhance the continuity of jpeg image block boundaries

A continuous, image block technology, used in image communication, digital video signal modification, electrical components, etc., can solve problems such as insufficient, anti-detection performance to be improved, affecting 64 pixels, etc.

Active Publication Date: 2021-08-13
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0003] Although the BBC principle has some effect, Li et al. only considered the impact of DCT coefficients at the same position in adjacent blocks on the spatial block boundary, however this is not sufficient because changing one DCT coefficient may affect 64 pixels, Moreover, multiple DCT coefficients may be changed in the same block during the steganography process, so the anti-detection performance needs to be improved

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  • A non-additive steganography method to enhance the continuity of jpeg image block boundaries
  • A non-additive steganography method to enhance the continuity of jpeg image block boundaries
  • A non-additive steganography method to enhance the continuity of jpeg image block boundaries

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Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] An embodiment of the present invention provides a non-additive steganographic method for enhancing the continuity of JPEG image block boundaries, including:

[0020] Divide the carrier image into N non-overlapping carrier sub-images, divide the message to be embedded into N equal parts, and embed each piece of message after equalization into a carrier sub-image one by one in a zigzag scanning manner;

[0021] At the initial moment, k=1, use ...

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Abstract

The invention discloses a non-additive steganography method for enhancing the boundary continuity of JPEG image blocks. The method adopts multiple rounds of embedding, and updates the carrier and distortion of the next round after each round of embedding. By updating a part of unembedded messages carrier to make up for the damage to the continuity of the block boundary by embedding, and to prevent the damage caused by the next round of embedding by updating the distortion, so both the carrier and the distortion are updated to maintain the continuity of the spatial block boundary; the experimental results show that the proposed method can It can better maintain the continuity of the airspace block boundary and further improve the anti-detection performance of steganography.

Description

technical field [0001] The invention relates to the technical field of steganography, in particular to a non-additive steganography method for enhancing the boundary continuity of JPEG image blocks. Background technique [0002] Steganography is a covert communication technology, and its purpose is to use digital multimedia (such as images) as a carrier to cover up secret information and realize covert communication. At present, the mainstream adaptive steganography technology is based on the reasonable definition of additive distortion function based on image texture, and then uses the minimum distortion steganographic coding STC to achieve high security. However, due to the correlation between natural image elements, non-additive distortion functions are more suitable for steganographic needs. At present, there is a principle of defining non-additive distortion for images in the air domain and DCT domain. The first principle was independently proposed by Li et al. and Den...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/467H04N19/12H04N19/154
CPCH04N19/12H04N19/154H04N19/467
Inventor 张卫明俞能海王垚飞
Owner UNIV OF SCI & TECH OF CHINA
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