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A data hiding method and hiding system

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

Inactive Publication Date: 2017-05-03
SHENZHEN UNIV
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  • Description
  • Claims
  • Application Information

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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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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 hiding system. The present invention uses an image as a data carrier. After the sending end converts the secret data into a bit sequence, the value of each bit in the bit sequence is hidden in the image, and the image with the secret data hidden is obtained and sent to the receiving end. The receiving end can The hidden secret data is extracted from the image according to the corresponding key. When hiding data, each square image block can hide two bits of data through the reverse ordinal parity of the pixel gray value sequence of its two diagonals, so that the amount of data hidden in the image will be divided by the image twice the number of image blocks formed. Moreover, when adjusting the pixel position of a square image block, only the gray values ​​of at most two pixels on the first diagonal and the second diagonal of the square image block need to be adjusted. The effect is small and the image quality is guaranteed.

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 Patents(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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