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Picture hiding method and device, picture restoring method and device, and terminal device

A technology for hiding pictures and data, applied in the field of information security, can solve problems such as difficult to effectively hide pictures, and achieve the effect of convenient transmission

Active Publication Date: 2019-01-04
深圳市TCL高新技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a method and device for hiding pictures, a method and device for restoring pictures, and a terminal device, so as to solve the problem that it is difficult to effectively hide pictures in the prior art

Method used

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  • Picture hiding method and device, picture restoring method and device, and terminal device
  • Picture hiding method and device, picture restoring method and device, and terminal device
  • Picture hiding method and device, picture restoring method and device, and terminal device

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Embodiment Construction

[0060] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0061] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0062] figure 1 A flow chart of a method for hiding a picture provided by an embodiment of the present invention is shown, and the details are as follows:

[0063] Step S101, read the private picture to be hidden.

[0064] Specifically, when reading a private picture...

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Abstract

The invention is applicable to the technical field of information security, and provides a picture hiding method, a picture restoring method, a picture restoring device and a terminal device. The invention comprises the following steps: dividing pixel points of a read privacy picture into blocks with designated size; DCT blocks of a specified size; extracting a preset amount of data to be hidden from all blocks with designated size after DCT transformation to obtain data columns of all data to be hidden; calculating the size of the data column; calculating a hidden capacity of the read auxiliary picture according to a preset hidden policy; comparing the size of the data column with the hiding capacity of the auxiliary picture to determine whether the hiding capacity of the auxiliary picture meets the hiding requirement; if so, a bar code is generated according to the width and height of the auxiliary picture; replacing the data to be hidden in the data column with the pixel values of the same number in the auxiliary picture to obtain a first hidden picture; a bar code being superimposed on the first hidden picture to obtain a second hidden picture. The method can effectively realize picture hiding.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a method and device for hiding a picture, a method and device for restoring a picture, and a terminal device. Background technique [0002] With the development of network technology and instant messaging tools (such as WeChat, QQ, etc.), instant messaging tools can transmit more and more types of information, such as text, files, pictures, etc., but a large part of the transmitted pictures It involves personal privacy, such as bank card pictures, ID card pictures, etc. Users do not want to be seen by third parties on the network when transmitting these pictures. Even if they are seen and copied by a third party, they also hope that the third party cannot see the private content contained in the pictures. This requires that the pictures be specially protected before transmission. Processing so that others cannot see the content after intercepting it. ...

Claims

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Application Information

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IPC IPC(8): G06F21/60G06F21/62
CPCG06F21/606G06F21/6245G06F21/1066
Inventor 康辉
Owner 深圳市TCL高新技术开发有限公司
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