Image steganography method, device and equipment and computer readable storage medium

An image and steganography technology, applied in the field of image processing, can solve the problems of large calculation amount of distortion cost function and poor image anti-detection performance, and achieve the effect of reducing calculation amount and improving operation efficiency

Pending Publication Date: 2020-06-09
PENG CHENG LAB
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Problems solved by technology

[0004] The main purpose of the present invention is to provide an image steganography method, device, equipment, and computer-readable storage medium, aiming to solve the problem of the large amount of calculation of the distortion cost function of the existing image steganography, and the anti-detection performance of the image after steganography poor technical problem

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  • Image steganography method, device and equipment and computer readable storage medium
  • Image steganography method, device and equipment and computer readable storage medium
  • Image steganography method, device and equipment and computer readable storage medium

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Embodiment Construction

[0041] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0042] The present invention provides a method for image steganography, referring to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the image steganography method of the present invention.

[0043] The embodiment of the present invention provides an embodiment of the image steganography method. It should be noted that although the logic sequence is shown in the flowchart, in some cases, the sequence shown or described steps. The image steganography method can be applied to servers and / or terminals, and the terminals include but are not limited to personal computers and mobile phones. For the convenience of description, the following steps will be omitted to implement the subject description image steganography method. Image steganography methods include:

[0044] Step S10, after obtain...

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Abstract

The invention discloses an image steganography method, device and equipment and a computer readable storage medium. The method comprises the steps: obtaining each spatial domain image block corresponding to a to-be-steganography image after the to-be-steganography image is obtained; calculating a first distortion cost value of the spatial domain image block, and determining a quantization step length of a DCT coefficient corresponding to the spatial domain image block; and calculating a second distortion cost value of the DCT coefficient according to the first distortion cost value and the quantization step length, and embedding secret information into the image to be steganographically written according to the second distortion cost value. According to the invention, steganography of theimage through the distortion cost value is improved; in other words, after secret information is embedded into the image, the anti-detection performance of the obtained image after steganography can be directly obtained in a spatial domain image block due to the fact that the quantization step length does not need to be calculated, the calculation amount of a function corresponding to the distortion cost value is reduced, and therefore the operation efficiency of steganography operation on the image is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image steganography method, device, equipment and computer-readable storage medium. Background technique [0002] Steganographic technology is to embed secret information in the image by slightly modifying the carrier image, and transmit the image containing the secret information to realize covert communication. With the wide application of JPEG (Joint Photographic Experts Group, Joint Photographic Experts Group) images, many steganographic methods for JPEG images have emerged in recent years. The initial JPEG steganography method mainly ensures the detection resistance of steganography by maintaining the statistical characteristics of DCT (DCT for Discrete Cosine Transform, discrete cosine transform) coefficients, such as nsF5 (no-shrinkage F5); or using channel coding to Improve the embedding efficiency of steganography, such as MME (Modified Matrix Encodi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021
Inventor 张新鹏王子驰
Owner PENG CHENG LAB
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