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Image decryption method

An image and reference image technology, applied in instruments, nonlinear optics, optics, etc., can solve problems such as unclear, missing encrypted information, etc.

Active Publication Date: 2020-11-13
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides an image decryption system to solve the problem that the decrypted encrypted information is missing or unclear

Method used

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Embodiment

[0035] An embodiment of the present invention provides an image decryption method, which is applied to an image decryption system. Such as figure 1 Shown is a schematic structural diagram of an image decryption system provided by an embodiment of the present invention. The image decryption system 1 may include: 10-preset light source; 11-light splitting device; 12-first phase-change material metasurface group; 13-second phase-change material metasurface group; 14-imaging area.

[0036] The decryption method of the image specifically includes:

[0037] Control the first sub-laser incident to the first phase-change material metasurface group 12, control the second sub-laser incident to the second phase-change material metasurface group 13; the first sub-laser and the second sub-laser The laser light is generated by the spectroscopic device 11 after splitting the laser emitted by the preset light source 10; the first phase-change material metasurface group 12 carries reference im...

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Abstract

The application belongs to the technical field of metasurface application, and provides an image decryption method, the image decryption method is applied to an image decryption system, and the imagedecryption system comprises a preset light source, a first phase change material metasurface group and a second phase change material metasurface group; a first sub-laser is controlled to be incidentto the first phase change material metasurface group, and a second sub-laser is controlled to be incident to the second phase change material metasurface group; the first sub-laser is modulated by reference image information to generate first modulated light, and the first modulated light is emitted from the first phase change material metasurface group and then focused to an imaging area; the second sub-laser is modulated by the reference image information to generate second modulated light, and the second modulated light is emitted from the second phase change material metasurface group andthen focused to the imaging area; and the encrypted information in the imaging area is obtained according to interference signals generated by the first modulated light and the second modulated light.According to the embodiment of the invention, the problem that the encrypted information obtained by decryption is missing or unclear is solved.

Description

technical field [0001] The invention relates to the technical field of metasurface application, in particular to an image decryption method. Background technique [0002] Micro-nano artificial metasurface is one of the research hotspots in the field of nanophotonics in recent years. Through the design and processing of metal or non-metal materials on the micro-nano scale, the design and processing of metal or non-metal materials on the micro-nano scale can be realized. Processing to realize "artificial intelligence" surfaces with unique electromagnetic properties that do not exist in nature on a macro scale. Since this kind of metasurface structure can manipulate light waves at the microscopic scale, it can realize unique functions according to the application requirements of the device macroscopically, such as: optical stealth, superlens, ultrafast modulator, ultrasensitive sensor, etc. Metasurfaces combined with optical phase-change materials can encrypt and decrypt holog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01
CPCG02F1/01
Inventor 张华滨张屹林雷霆袁小聪
Owner SHENZHEN UNIV
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