Data hiding method and data hiding system

A data hiding and data technology, applied in the field of data hiding, can solve the problem of insufficient data volume, affecting the applicability of data hiding transmission, etc., to achieve the effect of ensuring image quality

Inactive Publication Date: 2015-12-16
SHENZHEN UNIV
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Problems solved by technology

However, under the premise of ensuring the quality of the carrier image in the existing image-based data hiding transmission method, the amount of data that can be hidden in the image is not large enough, which affects the image-based data hiding transmission method in data hiding transmission. applicability

Method used

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  • Data hiding method and data hiding system
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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0049] In order to solve the problem of small hidden data capacity in the existing image-based data hiding transmission method, the data hiding method proposed by the present invention uses images as the data carrier, and after the sending end converts the secret data into a bit sequence, it converts the bit sequence into The value of each bit is hidden in the image, and the image with hidden secret data is obtained and sent to the receiving end. The receiving end can extract the hidden secret data from the image according to the corresponding key.

[0050] Such as figure 1 As shown, the present invention provides a kind of data hiding method, comprises the steps:

[0051] Step A: converting the data into a bit sequence; when the number of bits in...

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Abstract

The invention relates to the technical field of data hiding, in particular to a data hiding method and a data hiding system. An image is used as a data carrier; after secret data is converted into a bit sequence by a sending end, the values of each bit in the bit sequence are hidden in the image; the image hidden with the secret data is obtained and is sent to a receiving end; and the receiving end can extract the hidden secret data from the image according to a corresponding secret key. During data hiding, each square image block can hide two-bit data through inverse number odd-even properties of a pixel gray value sequence of two diagonal lines of each square image block, so that the volume of data hidden in the image is twice of the number of the image blocks split by the image. During pixel position regulation on each square image block, only the gray values of at most two pixels on the first diagonal line and the second diagonal line of the square image block need to be regulated, so that the influence on the image quality is little; and the image quality is ensured.

Description

technical field [0001] The invention relates to the technical field of data hiding, in particular to a data hiding method and a hiding system. Background technique [0002] In recent years, with the rapid development of communication technologies such as mobile Internet and 4G, the transmission of information has become more and more convenient, but at the same time it has also brought about issues such as the security and confidentiality of data transmission. Encrypted transmission is a traditional solution, but it also brings problems such as complex key management, low system efficiency, and easy attention of interceptors. Data hiding technology can solve these problems very well. By hiding the secret data to be transmitted in the general file carrier content, and then transmit these general file carriers with secret data hidden to the receiver through the public transmission channel, the receiver passes The corresponding data extraction method obtains the secret data hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T9/00
CPCG09C5/00G09C1/00H04L2209/16
Inventor 赵东宁张勇谢维信李岩山喻建平陈剑勇
Owner SHENZHEN UNIV
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