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Image steganalysis method and system based on frequency domain analysis

A technology of frequency domain analysis and frequency domain decomposition, applied in image data processing, image data processing, instruments, etc., can solve the problems of image steganography with large distortion, poor security, and slow algorithm data processing speed, etc.

Active Publication Date: 2017-01-11
SHENZHEN UNIV
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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an image steganography method and system based on frequency domain analysis, aiming to solve the defects of large image steganography distortion, slow algorithm data processing speed and poor security in the prior art

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  • Image steganalysis method and system based on frequency domain analysis
  • Image steganalysis method and system based on frequency domain analysis
  • Image steganalysis method and system based on frequency domain analysis

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Embodiment Construction

[0057] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0058] The present invention provides a flowchart of a preferred embodiment of an image steganography method based on frequency domain analysis, as figure 1 As shown, among them, the methods include:

[0059] Step S100, performing frequency domain decomposition on the filter bank used by the rich model of spatial steganalysis, obtaining the comprehensive frequency domain obtained by correspondingly adding the coefficients of each frequency band of each filter in the filter bank, and generating a spectrum according to the combined frequency domain picture.

[0060] In actual implementation, the current image steganalysis technology basically uses a...

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Abstract

The invention discloses an image steganalysis method and system based on frequency domain analysis, and the method comprises the steps: carrying out the frequency domain decomposition of a filter group employed by a spatial domain steganalysis model, obtaining a comprehensive frequency domain obtained through the addition of coefficients of all frequency bands of all filters in the filter group, and generating a spectrogram according to a combined frequency domain; obtaining the energy values corresponding to different frequency bands according to the spectrogram, and generating a distortion function at different frequency bands with different weight values according to the difference of energy values; embedding secret information into an original image according to the distortion function, and obtaining hidden carrier information. The method can protect the secret information embedded into the image from being detected by a steganalysis detection algorithm, improves the steganalysis safety of the image, and facilitates the improvement of the communication safety.

Description

technical field [0001] The invention relates to the technical field of image steganography, in particular to an image steganography method and system based on frequency domain analysis. Background technique [0002] Media content security is an important part of cyberspace security today. As a new means of ensuring information security, information hiding has been widely concerned in the past ten years. Steganography is an important branch of information hiding. Its principle is to combine classical steganography ideas and multimedia signal processing technology to hide secret information in digital media, so that listeners cannot distinguish between ordinary carriers and secret carriers. As a means of covert communication, it has important application prospects in military intelligence, privacy, security and other aspects. At present, the confrontation between steganography and steganalysis is mainly concentrated on the image carrier, and it shows a spiral upward developm...

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Application Information

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IPC IPC(8): G06T1/00
CPCG06T1/0092G06T2201/0052
Inventor 张浩杰谭舜泉李斌黄继武
Owner SHENZHEN UNIV
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