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Blind hidden information detection method based on analysis of image gray run-length histogram

An image grayscale and hidden detection technology, which is applied in the field of information hiding in pattern recognition and image processing, can solve the problems of original carrier information difficulties and algorithm attacks, and achieve the effect of simple extraction and increased generalization performance

Active Publication Date: 2009-12-30
INST OF AUTOMATION CHINESE ACAD OF SCI
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development and increase of hidden algorithms, it is difficult to attack each algorithm accordingly, and it is also very difficult to obtain complete original carrier information

Method used

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  • Blind hidden information detection method based on analysis of image gray run-length histogram
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  • Blind hidden information detection method based on analysis of image gray run-length histogram

Examples

Experimental program
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Effect test

Embodiment 1

[0069] For images with hidden information (stego-lena), see e.g. figure 2 -a):

[0070] First, calculate the 0°, 45°, 90°, 135° grayscale run-length matrix M of the image θ (d, g), then according to H θ ( d ) = Σ g = 0 G M θ ( d , g ) Calculate its run length histogram.

[0071] Then, based on the present invention, find the characteristic function F of the run length histogram in the four directions θ (ie its DFT transform).

[0072] Second, calculate the characteristic function F θ The third moment of :

[0073] M θ n = Σ j = 1 ...

Embodiment 2

[0078] For images without hidden information (origin-lena), see figure 2 -b):

[0079] First, calculate the 0°, 45°, 90°, 135° grayscale run-length matrix M of the image θ (d, g), then according to H θ ( d ) = Σ g = 0 G M θ ( d , g ) Calculate its run length histogram.

[0080] Then, based on the present invention, find the characteristic function F of the run length histogram in the four directions θ (ie its DFT transform).

[0081] Second, calculate the characteristic function F θ The third moment of :

[0082] M θ n = Σ j = ...

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Abstract

The invention discloses a blind hidden information detection method based on analysis of an image gray run-length histogram, which judges whether an image possibly contains hidden information by analyzing the number distribution condition of long run lengths and short run lengths in the image gray run-length histogram. The method comprises the following steps: calculating a gray run-length matrix of gray images marked with class information in a training set to acquire a run-length histogram, extracting n-order statistic of a characteristic function of the run-length histogram as characteristics, and training and classifying the extracted characteristics to acquire classifier model parameters so to form a classifier model, wherein the marked class information contains or does not contain the hidden information; and calculating the gray run-length matrix of randomly inputted gray images to acquire an image run-length histogram, then carrying out characteristic extraction, and inputting the extracted characteristics into the classifier model to acquire the class information of the input images. The method realizes accurate and efficient blind hidden information detection of the images.

Description

technical field [0001] The invention relates to the technical field of information hiding and image processing in pattern recognition, in particular to a blind information hiding detection method based on image grayscale run-length histogram analysis. Background technique [0002] In recent years, the rapid development of computer technology and network communication makes it easy for people to transmit data through computer storage media, Internet networks and communication networks. Image information hiding is a technology that hides secret information in digital images. Its main idea is to hide secret information invisible to the naked eye into the digital image as a carrier. Correspondingly, the purpose of information hiding detection is to discover the existence of information hiding / stealth communication by analyzing multimedia data, and extract, block or replace secret information. Through the detection of information hiding, it is possible to counteract illegal conf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00G06K9/62
Inventor 谭铁牛董晶
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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