Multi-complex three-dimensional scene encryption and decryption method

Abstract

The invention discloses a multi-complex three-dimensional scene encryption and decryption method, which comprises the following steps of: generating a kinoform for each color layered image of a three-dimensional scene by using a phase recovery algorithm, and multiplying the kinoform by a random symbol function to form a light wave signal with noise interference; multiplying the kinogram plane light wave signals with noise interference of different color channels in different three-dimensional scenes to form a composite light wave signal; decomposing the composite light wave signal into two phase functions to be multiplied, using one phase function as a common encryption phase template, and combining the other phase function with an interference suppression signal to form a phase function for decryption; calculating Fresnel inverse diffraction of a specific wavelength and a specific distance for the phase function for decryption to obtain an amplitude and a phase, applying a phase recovery algorithm to the amplitude to generate a first decrypted phase template, and combining the phase with a phase formed by forward Fresnel diffraction of the first decrypted phase template to form asecond decrypted phase template. All color components of a three-dimensional scene are decrypted by placing an encryption phase template of a cascade structure and first and second decryption phase templates on a specific plane of a virtual light path and are combined to recover the color three-dimensional scene. The method has good safety and robustness.

Description

technical field [0001] The invention relates to the technical field of data image processing, in particular to an encryption and decryption method for multiple complex three-dimensional scenes based on an improved phase recovery algorithm and a cascade structure decryption phase template. Background technique [0002] Compared with general two-dimensional images, digital carriers containing object depth information can bring viewers a sense of immersion in three-dimensional presentation. In machine vision, 3D TV, 3D movies, 3D calls, 3D maps, 3D games, Aerial surveying and mapping, navigation, telemedicine and other fields have broad development space. The binocular stereoscopic image based on the principle of binocular parallax 3D display and the digital hologram based on the principle of true 3D display are two commonly used recording methods for three-dimensional scenes of objects, and are also an important part of multimedia information. The popularization of computers,...

AI Technical Summary

Problems solved by technology

The popularization of computers, the Internet and mobile smart terminals has accelerated the dissemination of digital works, but it has also caused the security protection of digital works. In terms of multi-user authentication, content distribution, expanding encrypted information capacity, and improving the efficiency of secret information transmission, etc. Security of multiple digital works needs to be addressed

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