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Moire fringe-based screen shooting prevention method and system

A moiré pattern and substrate technology, applied in the field of information security, can solve the problem of attack without display screen capture, confidential leakage, data theft and other problems

Active Publication Date: 2022-01-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above traceability method does not solve the basic problems such as confidentiality leakage and data theft, that is, how to protect the content of the display and prevent it from being photographed
Under the existing technical background, there is basically no effective method to solve the difficult problem of display camera attack

Method used

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  • Moire fringe-based screen shooting prevention method and system
  • Moire fringe-based screen shooting prevention method and system
  • Moire fringe-based screen shooting prevention method and system

Examples

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Embodiment Construction

[0022] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0023] The drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software, ...

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Abstract

The invention discloses a Moire fringe-based screen shooting prevention method and system, and relates to the field of information security. The method comprises the following steps of: acquiring a to-be-encrypted display page as the input of a Moire grating generation module; acquiring color information of each region of the to-be-encrypted display page, performing partitioning, and generating a corresponding Moire grating pattern for each region; adjusting and optimizing the width of the Moire grating patterns by using human eye imaging characteristics, and embedding the Moire grating patterns in the corresponding regions; and displaying an image added with Moire fringes on a display. According to the method, the image full of Moire patterns can be obtained when a camera shoots the screen while the human eyes read the content on the display without barriers, so that privacy information is covered, and the method can be used as a privacy protection method for screen shooting attacks.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to a moiré-based anti-camera method and system. Background technique [0002] With the rapid development of information technology, cameras have been integrated into mobile devices as a basic sensor element. At the same time, problems such as confidential disclosure and data theft caused by screen capture attacks against displays have seriously threatened the field of information security. At present, the most common method for data leakage caused by screen capture attacks is to add digital watermarks to the pictures and text displayed on the display, and then use the digital watermarks to trace the source to carry out post-event accountability and stop losses. However, the above traceability methods do not solve the basic problems such as confidentiality leakage and data theft, that is, how to protect the content of the display and prevent it from being photographed. ...

Claims

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Application Information

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IPC IPC(8): G06F21/84G06V30/18
CPCG06F21/84
Inventor 徐文渊冀晓宇程雨诗吴之昊
Owner ZHEJIANG UNIV
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