High-capacity optical information hiding method and system and high-capacity optical information extracting method and system

Abstract

The invention relates to a high-capacity optical information hiding method and system and a high-capacity optical information extracting method and system. The hiding method comprises the steps of performing two-dimensional code encoding on to-be-hidden information to obtain a two-dimensional code set, wherein the two-dimensional code set comprises a plurality of two-dimensional codes corresponding to the to-be-hidden information; diffracting the two-dimensional codes in the two-dimensional code set through a reflective coherent diffraction imaging system comprising a spatial light modulator to obtain a diffraction pattern set, wherein the diffraction pattern comprises a diffraction pattern corresponding to each two-dimensional code; obtaining a host video; processing diffraction patternsin the diffraction pattern set according to a host video to obtain a processed image; and hiding the processed video file in the host video to obtain a to-be-transmitted video file with hidden information. According to the invention, the security of information transmission can be improved.

Description

technical field [0001] The invention relates to the field of optical information security, in particular to a method and system for hiding and extracting large-capacity optical information. Background technique [0002] The era of network interconnection has made information security issues more and more prominent, and how to hide and transmit secret information without being directly obtained through effective and efficient means is very important. In the current era of information explosion, a huge amount of information is generated all the time, and various corresponding information processing methods are flourishing with it. Optical information security technology, as a security guarantee method for information intercommunication, has highlighted an extremely important position in the Internet era. However, most of the existing information hiding methods are based on simple digital coding methods, with a single key space and no security guarantee of physical space, resu...

AI Technical Summary

Problems solved by technology

However, most of the existing information hiding methods are based on simple digital coding methods, the key space is single, and there is no security guarantee for the physical space, resulting in low security in the process of information transmission.

Images