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Three dimensional information optics cryptosystem and method

A technology of three-dimensional information and encryption system, which is applied in 3D image processing, instruments, calculations, etc., and can solve problems such as the inability to realize optical encryption of large-scale three-dimensional information

Inactive Publication Date: 2013-05-08
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

Prior art 6 utilizes such as image 3 The device shown uses Fresnel domain digital holography technology to realize three-dimensional information encryption. However, due to the limitation of the small field of view of holographic recording, the prior art 6 cannot realize optical encryption of large-scale three-dimensional information.

Method used

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  • Three dimensional information optics cryptosystem and method
  • Three dimensional information optics cryptosystem and method
  • Three dimensional information optics cryptosystem and method

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Embodiment Construction

[0083] The present invention will be further described below in conjunction with the examples and drawings, but the examples should not limit the protection scope of the present invention.

[0084] Please see first figure 1 , figure 1 Shown is a schematic diagram of the three-dimensional information optical encryption system adopted in the present invention. Depend on figure 1 It can be seen that the three-dimensional information optical encryption system used in the present invention includes an encryption device and a decryption device, wherein the encryption device includes a projection system 1, a reference plane 2, a first CCD camera 3, a computer 4, a first spatial light modulator 5, a second A spatial light modulator 6, a first lens 7, a third spatial light modulator 8, a second lens 9, a second CCD camera 10, a first light source 11, and a second light source 12, wherein the decryption device includes a fourth spatial light modulator device 13 , third lens 14 , fif...

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Abstract

Provided is a three dimensional information optics cryptosystem and a method. The three dimensional information optics cryptosystem comprises a set of encryption device and a set of deciphering device. Firstly, a structured light projection coded system is used for encoding the three dimensional information of the objects to be encrypted to a two-dimensional optical stripe image. And then, a double random phase encoding system is used for strengthening the security of the two-dimensional optical stripe image. The three dimensional information optics cryptosystem and the method are capable of effectively achieving the three dimensional information encryption of the objects and enlarging the size range of the encrypted objects.

Description

technical field [0001] The invention relates to information security, in particular to a three-dimensional information optical encryption system and method. Background technique [0002] Encryption and anti-counterfeiting of information is an important content in the field of information security technology today, among which optical encryption has attracted extensive attention due to its advantages of high parallelism, high security, high speed and low cost. Since 1995, Refregier and Javidi proposed double random phase encryption technology (see prior art 1, Philippe Refregier, Bahram Javidi.Optical image encryption based on input plane and Fourier plane random encoding, Optics Letters, 1995,20(7):767 -769.) After that, optical encryption technology entered a period of rapid development, and many new methods appeared, such as: encryption technology based on fractional Fourier transform (see Prior Art, 2, G.Unnikrishnan, J.Joseph, K. Singh.Optical encryption by double-rando...

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Application Information

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IPC IPC(8): G06T15/00G06T9/00G03H1/12
Inventor 李思坤王向朝步扬刘晓雷
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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