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Method for assessing DCT-domain image steganography capacity based on MCUU model

An image and steganography technology, applied in the field of information hiding, can solve the problems that the global complexity and local complexity of the image are difficult to balance, and the accuracy of steganalysis is not high.

Active Publication Date: 2014-07-02
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0012] The present invention overcomes the shortcomings of the prior art that the evaluation of breakthrough steganography capacity only stays at the theoretical level, the accuracy of steganalysis is not high, and the global complexity and local complexity of the image are difficult to balance, and provides an effective evaluation method. Method of Maximum Steganography Capacity of JPEG Image Based on MCUU Model

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  • Method for assessing DCT-domain image steganography capacity based on MCUU model
  • Method for assessing DCT-domain image steganography capacity based on MCUU model
  • Method for assessing DCT-domain image steganography capacity based on MCUU model

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] In order to test the steganography capacity, the present invention has collected 300 various images, and the selected image source is the image in the BOSSv0.92 image library (1000 JPEG images are randomly selected in 10074), which are taken by a digital camera voluntarily. And 1000 classic images commonly used in image processing. In order to establish a universal and reasonable data model, the implemented images include both simple images without any details and images with rich details; there are images of mountains, water, people, animals, and plants. All images were processed with ACDSee image processing software, color images were converted into grayscale images, images in non-JPEG format were converted into grayscale images in JPEG format with an image quality factor of 85, and they were scaled to sizes of 256×256 and 512 ×512 each 1000 images ...

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Abstract

The invention discloses a method for assessing the DCT-domain steganography capacity of JPEG images based on a control model of maximizing capacity under undetectable (short for an MCUU model), so that the theory that the steganography capacity is not only related to the sizes of the images and the image complexity but also related to the factors such as specific bearing frequency bands, steganography operators and embedding strength is obtained. By the adoption of the method, the relation of the steganography capacity and the factors such as the image sizes, the bearing frequency bands, the steganography operators, the embedding strength and the image complexity can be analyzed, a rigorous experimental scheme is disclosed, and experiments verify the correctness of the relation model of the steganography capacity and the factors. Compared with other methods, the method has more theoretical value and practical engineering significance.

Description

technical field [0001] The invention belongs to the technical field of information hiding, and discloses a method for evaluating the steganography capacity of a DCT domain of a JPEG image under an MCUU model. Background technique [0002] Steganography is both a science and an art, a way of hiding secret information in digital media. It uses typical digital media, such as text, image, audio, video and other multimedia as carriers to store secret data. The important purpose of steganography is to conceal communication, and steganography seeks to embed secret information in carrier data. The most important reason for whether steganography is detected by others is the steganographic capacity. For a given image with a fixed size, the maximum steganographic capacity is determined when the steganographic algorithm is determined. Then, under the constraints that do not arouse suspicion, what is the maximum capacity of its steganography, that is, the problem of the upper limit of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00G06T9/00
Inventor 毛家发黄艳红肖刚程振波卢书芳胡海彪范伟康彭琼丽
Owner ZHEJIANG UNIV OF TECH
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