Multi-3D color object snapshot compression encryption method and device based on space division multiplexing

By using spatial division multiplexing and compressed sensing technology to perform encrypted imaging of multiple 3D color objects, the problems of small encryption capacity and crosstalk in existing technologies are solved, and high-security and high-efficiency data transmission is achieved.

CN116804842BActive Publication Date: 2026-05-26ANHUI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI UNIV
Filing Date
2023-05-23
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing optical encryption methods cannot effectively compress and encrypt multiple 3D color objects, resulting in problems such as small encryption capacity, large information volume, and crosstalk.

Method used

The spatial division multiplexing method is used to generate multiple composite three-color parallel beams using a three-primary-color laser source. The 3D color object is encrypted using a random phase mask, and an encrypted color hologram is generated on the detector plane. The encrypted hologram is then decrypted and reconstructed using compressed sensing technology.

Benefits of technology

It enables simultaneous encryption of multiple 3D color objects, improving encryption capacity and security, reducing data transmission volume, reducing crosstalk during decoding, and enhancing data security.

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Abstract

This invention provides a method and apparatus for compressing and encrypting snapshots of multiple 3D color objects based on spatial division multiplexing. The method includes: generating an object beam and a reference beam based on a three-primary-color laser source, and generating multiple composite three-color parallel beams based on the object beam; illuminating each 3D color object and a random phase mask connected to each 3D color object with the multiple composite three-color parallel beams, respectively, and calculating the light field distribution of each 3D color object on the corresponding random phase mask plane; encrypting the light field distribution using each random phase mask, and generating an object light field on a detector plane based on the encrypted light field distribution; and generating an encrypted color hologram of multiple 3D color objects by interfering with the reference beam on the detector plane through the object light field and the reference beam. This method can significantly reduce the crosstalk effect during decoding of different encrypted objects, greatly reduce the leakage of object information, and significantly improve security.
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