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Automatic identification method for secret related drawings

A drawing and automatic technology, which is applied in the field of automatic identification of confidential drawings, can solve the problems of inability to solve the identification of confidential drawings, difficulty in realization, high technical difficulty, etc., and achieve the effect of solving the problem of automatic identification and fast and reliable identification

Inactive Publication Date: 2009-08-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

If image analysis technology is used to automatically identify each element of the image file, and then compare it with the existing model to determine whether it is confidential, the technology is difficult and difficult to implement
Therefore, the identification and interception of text-based confidential information is very effective, such as Word documents, but it cannot solve the identification of confidential drawings based on image information.

Method used

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  • Automatic identification method for secret related drawings
  • Automatic identification method for secret related drawings
  • Automatic identification method for secret related drawings

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Embodiment Construction

[0042] The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings:

[0043] Barcode production and generation

[0044] The process is like figure 1 As shown, the specific steps are as follows:

[0045] The first step: data encryption

[0046] Encrypt the relevant information in the drawing, such as the secret level, drawing date, drawing unit, drawing person, etc., with the RAS encryption algorithm.

[0047] The second step: the data is compiled into a two-dimensional bar code

[0048] Generate QR Code two-dimensional bar code in accordance with Chinese national standard GB / T18284-2000. In order to be able to identify stably, the module width of the 2D barcode is required to be at least 0.5mm, and there is at least a 5mm blank area around the border of the 2D barcode.

[0049] Step 3: Place a two-dimensional bar code on the drawing

[0050] Find the blank area on the drawing, and place the generated two-dimensiona...

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Abstract

The invention discloses an auto-authentication method of a secret-related drawing. By utilizing the characteristics of large information quantity, high security and strong anti-interference performance of a two-dimensional bar code, the relevant information of the secret-related drawing is stored in the two-dimensional bar code after compression and encryption and put on the drawing; and when a drawing file is intercepted, the two-dimensional bar code in the drawing is automatically detected by image processing techniques, and whether the code is secret-related information is judged after demangling. The method comprises the detailed steps of the manufacture of the two-dimensional bar code; the detection of the two-dimensional bar code; the binaryzation of the two-dimensional bar code; fast inverse perspective transformation; secret-related information authentication and the like. The method effectively solves the auto-authentication problem of the secret-related drawing and can complete the authentication to the secret-related drawing quickly and reliably.

Description

Technical field [0001] The invention relates to an automatic identification method of secret-related drawings, which belongs to the field of information security and automatic identification. Background technique [0002] In the information age, both military research institutions and civilian enterprises are maximizing the use of information technology to improve the efficiency of R&D and design. Design drawings of military or civilian products, as core secrets, often exist in the form of electronic files. [0003] In order to avoid unintentionally or maliciously leaking confidential information during network transmission and media exchange, software is often used to monitor network transmission and media exchange files. For example, install a firewall in the mail receiving and dispatching system to intercept the transmitted files for judgment. Among them, how to automatically identify whether the content of an image file is confidential is its key technology. The identificatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K17/00G06K19/06
Inventor 刘宁钟孙涵黄元元
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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