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Video optics encryption and decryption system and method based on double random phase encoding

A dual random phase and random phase technology, applied in closed-circuit television systems, electrical components, selective content distribution, etc., can solve the problems of increasing encryption algorithm expenses, encryption and decryption operation time, etc., to improve system applicability, simplify system structure, The effect of reducing manufacturing costs

Inactive Publication Date: 2014-11-19
ENG UNIV OF THE CHINESE PEOPLES ARMED POLICE FORCE
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Problems solved by technology

However, due to certain encryption requirements in the monitoring field, the increase in the amount of image data will pose a severe test to the encryption algorithm, and the increase in image size will seriously increase the cost of the encryption algorithm and the computing time for encryption and decryption

Method used

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  • Video optics encryption and decryption system and method based on double random phase encoding
  • Video optics encryption and decryption system and method based on double random phase encoding
  • Video optics encryption and decryption system and method based on double random phase encoding

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Embodiment Construction

[0034] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0035] The optical encryption and decryption system designed by the present invention can be embedded in a video acquisition system, and is specifically designed to add a group of optical encryption systems in the video acquisition optical system and imaging photosensitive elements. Blocks of random phase plates. The video optical signal is separated from the color image through the three-color composite grating, and the color image is decomposed into gray-scale signals of red, green, and blue components. One of the grayscale signals is used as the encryption source for double random phase encoding. The dual random phase encoding is composed of two random phase plates and a set of Fourier lens groups, using a 4-F system. Put a random phase plate at the input position of the optical system, scramble the spatial information of the image f(x,y) w...

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Abstract

A video optics encryption and decryption system and method based on double random phase encoding comprises an encryption system and a decryption system; both of the encryption system and the decryption system are the same in physical structure; the encryption system as well as the decryption system comprises a Fourier lens set and two random phase plates; in the encryption system, the Fourier lens set and the random phase plates form a 4-F system used for performing the double random phase encoding on picture signals; in the decryption system, the Fourier lens set and the random phase plates form the 4-F system used for performing double random phase decoding on encryption signals to obtain a gray image with a single channel; the invention further provides a method based on the double random phase encoding, and applies optics encryption in the field of video encryption at first time, so that the encryption and decryption time is lowered, the video transmission performance is greatly improved, and the beneficial technical support is provided for the future that high-definition video technology is popularized rapidly and the field of military encryption and decryption.

Description

technical field [0001] The invention belongs to the technical field of video monitoring, in particular to a video optical encryption and decryption system and method based on double random phase encoding. Background technique [0002] The image detection technology in information communication has been developed and applied on a large scale in all walks of life. The high-definition era has come with the rapid development of software and hardware. At present, the amount of video surveillance image data is increasing, the coverage of video surveillance systems is getting wider and wider, and the requirements for image recognition are getting higher and higher. High-definition has become a development trend in the future. However, due to certain encryption requirements in the monitoring field, the increase in the amount of image data will pose a severe test to the encryption algorithm, and the increase in image size will seriously increase the cost of the encryption algorithm a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N21/2347H04N21/4402
Inventor 王洪伟
Owner ENG UNIV OF THE CHINESE PEOPLES ARMED POLICE FORCE
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