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Carrier selection method capable of avoiding pretreatment

A technology of preprocessing and carrier, applied in the field of secret data, it can solve the problem of ignoring preprocessing distortion in embedded distortion, and achieve the effect of improving steganographic security.

Active Publication Date: 2020-12-25
东南数字经济发展研究院
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Problems solved by technology

However, existing vector selection methods only focus on embedding distortions and ignore preprocessing distortions

Method used

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  • Carrier selection method capable of avoiding pretreatment
  • Carrier selection method capable of avoiding pretreatment
  • Carrier selection method capable of avoiding pretreatment

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] combined with figure 1 , a preprocessing-avoiding carrier selection method, including a preprocessing distortion calculation stage, an embedding distortion calculation stage, and a distortion fusion and carrier selection stage. In this example, the BOSSbass ver.1.01 image library is used to construct the steganographic candidate image set, including 10,000 grayscale images with a size of 512×512. All images are randomly divided into 10 subsets, each with 1000 images. Then select 7 subsets to perform 7 image processing operations: histogram equalization, sharpening, dilation, erosion, Wiener filtering, median filtering, and mean filtering. The remaining 3 subsets are not modified. After processing, use all 10000 images as candidate images {X 1 ,X 2 ,...,X 10000}. Then 70% of the candidate images are preprocessed. In addition, 1338 images from th...

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Abstract

The invention relates to a carrier selection method capable of avoiding preprocessing, which comprises a preprocessing distortion calculation stage, an embedded distortion calculation stage and a distortion fusion and carrier selection stage, and is characterized in that a pre-classifier is trained to give the possibility that an image is preprocessed, the higher the possibility is, the larger thepreprocessing distortion is, and for the embedded distortion, the current distortion minimization framework is used for calculation. Finally, the two types of distortion are fused, and an image withminimum total distortion is selected as a carrier. According to the carrier selection method capable of avoiding preprocessing, the selection of the preprocessed image as the carrier is avoided by avoiding the preprocessed image, so that the multi-carrier steganography security is improved.

Description

technical field [0001] The invention relates to the technical field of secret data, in particular to a carrier selection method for avoiding preprocessing. Background technique [0002] Steganography is a technique for conveying secret information through an open channel. Due to its wide application, digital image has become the most commonly used carrier in steganography. To achieve steganography, secret information is usually embedded by slightly modifying the carrier content. At present, steganography mainly guarantees security by minimizing image distortion. Steganalysis, on the other hand, aims to reveal the existence of secret information by analyzing images transmitted on public channels. At present, steganalysis is mainly based on supervised learning, and steganalysis classifiers are trained by extracting image features, and then used to judge suspicious images. Recently, steganalysis based on deep learning integrates feature extraction and classification process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00G06T5/00G06T5/20G06T5/30G06T5/40G06K9/62
CPCG06T1/0021G06T5/40G06T5/30G06T5/20G06T2201/0202G06T2207/20024G06F18/285G06F18/25G06T5/73Y02E30/30
Inventor 钱振兴张新鹏李晓龙秦川
Owner 东南数字经济发展研究院
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