Research On Structured Light 3D Imaging Technology Based On Asymmetric Encryption

Information security has a far-reaching impact on national security and economic and social development.Countries all over the world have continuously increased their research on information security technology.Optical information security technology has gradually become one of the most active research fields with its unique advantages of multi degrees of freedom and parallel processing.In recent years,the research of optical image encryption technology has made some progress.People have proposed a variety of information encryption strategies,but most of them are limited to two-dimensional targets.The encryption of three-dimensional targets needs to be improved in terms of imaging quality and security.In this paper,the existing research results are investigated and analyzed in detail,the relevant knowledge and theory of structured light 3D imaging technology are introduced in detail,the advantages and disadvantages of this method are analyzed,and the future development of this technology is prospected.At the same time,aiming at some security problems that may exist in the process of three-dimensional object information transmission,such as information theft by attackers,this paper puts forward corresponding solutions,so as to ensure the security of three-dimensional object information in the process of transmission.The main work of this paper includes the following three aspects:1.Through the systematic investigation of structured light three-dimensional imaging technology,an experimental device of structured light three-dimensional imaging technology,the basic principle of the experiment and the main steps of the experimental process are introduced in detail.According to the knowledge and skills of this technology,the experiment of three-dimensional imaging of the object is realized in the laboratory,and the final imaging results verify the feasibility of this method to reproduce the three-dimensional contour of the object.2.An asymmetric encryption method for 3D imaging of invisible structured light based on elliptic curve encryption and 3D imaging of structured light is proposed.The principle of this method is introduced in detail and verified by numerical simulation.Finally,the security of the system is tested by histogram and adjacent pixel correlation and so on.Through the final imaging results,it is concluded that this method can effectively enhance the security of object three-dimensional information transmission.3.An encryption method based on topological charge multiplexing is proposed,which is combined with structured light 3D imaging technology to form a new asymmetric encrypted structured light 3D imaging method.This method uses the combination of digital encryption and optical spiral phase to encrypt and transmit the three-dimensional information of the object.The principle of this method is introduced in detail,and numerical simulation is carried out.The security is analyzed by shear attack,Gaussian noise attack and so on.Finally,the imaging results verify the feasibility and security of this method in three-dimensional imaging and information transmission.