A Credibility Evaluation Method for Steganalysis of Spatial Image

A steganalysis and reliability technology, applied in image data processing, image data processing, instruments, etc., can solve problems such as high reliability, and achieve the effect of enhancing the value of practical applications

Active Publication Date: 2021-07-20
WUHAN UNIV
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Problems solved by technology

Conversely, the greater the noise, the lower the reliability

Method used

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  • A Credibility Evaluation Method for Steganalysis of Spatial Image
  • A Credibility Evaluation Method for Steganalysis of Spatial Image
  • A Credibility Evaluation Method for Steganalysis of Spatial Image

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Embodiment Construction

[0014] In order to facilitate those of ordinary skill in the art to understand and implement the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0015] The present invention can be used for general steganalysis to estimate the specific detection rate of individual samples. During specific implementation, the overall process includes two processes of training and detection; training is the process of preparing a classifier (detector), which will be produced by itself after training Some known sample test accuracy.

[0016] (1) Training process;

[0017] Prepare the training images and train the classifier.

[0018] Prepare 5000 normal images and 5000 corresponding steganographic images, and use the e...

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Abstract

The invention discloses a method for assessing the credibility of steganalysis of spatial images. Firstly, the adaptive residual calculation is performed on the image to be tested, and then the obtained residual is rounded and truncated, and its horizontal, vertical and main diagonals are counted. and the co-occurrence probability matrix in the four directions of the subdiagonal. By adding and averaging the four co-occurrence probability matrices, this mean matrix is ​​further used to calculate the credibility evaluation value of the image after steganographic detection. The invention can enable steganalyzers to distinguish which samples in the detection results have higher or lower certainty, thereby improving the practical application value of steganalysis.

Description

technical field [0001] The invention belongs to the technical field of computer information hiding, and relates to a steganalysis blind detection method, in particular to a steganalysis reliability evaluation method of an airspace image. Background technique [0002] With the rapid development of network technology, communication technology and multimedia signal processing technology, information hiding, as a new cryptographic technology, has become a new research hotspot in the field of information security. Steganography is an important branch of information hiding technology, which mainly studies how to hide information in public multimedia data to realize covert communication. The corresponding steganalysis research is the attack on steganography, that is, how to detect, extract or destroy hidden secret information. [0003] Spatial image steganography is a technique to embed secret information on image pixels. Generally, the least significant bit (LSB, Lest Significan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021G06T2201/0065
Inventor 王丽娜徐一波翟黎明任延珍
Owner WUHAN UNIV
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