Research On Phase Reconstruction Of 3D Object Computing Ghost Imaging

With the development and progress of society,people’s requirements for image information are also increasing,so the acquisition of three-dimensional information of objects has become a hot research issue in recent years.However,due to the limitations of complex experimental equipment and long imaging time,the traditional imaging method can not recover the specific information of three-dimensional target object well.As a special new computational imaging technology,ghost imaging has many advantages that traditional imaging does not have,such as strong anti-noise ability,ultra-high resolution and the ability to break the diffraction limit.When using ghost imaging technology to recover the characteristic information of three-dimensional target object,we can obtain more abundant information,expand the information dimension and understand the target object from multiple angles.Therefore,the research value of using ghost imaging technology to recover three-dimensional object information is very great.For the three-dimensional target object,the phase of the target object corresponding to the object information on different planes is different,so this paper reconstructs the phase of the three-dimensional target object by discussing the object information on different planes.Firstly,this paper selects an inclined object.Because the different distances of the inclined target object in the longitudinal distance are related to the inclination angle,this is used to describe the phase of the three-dimensional object.In this part,the reconstructed images with different tilt angles and different distances are reconstructed by using computational ghost imaging technology.The reconstruction of the image on a longitudinal plane in the inclined object is discussed.It is found that the image contour reconstructed on the longitudinal plane is clear,while the image contour far away from the longitudinal plane is fuzzy.Next,this paper further calculates the value of the second-order correlation function on different longitudinal planes,and finds that the value of the second-order correlation function on different longitudinal planes will be different,that is,there is a certain relationship between different phases in three-dimensional objects and the value of the second-order correlation function.In order to better reflect the image information on different longitudinal planes,tomography is also carried out in this paper.By discussing the image information on different longitudinal planes,that is,different phase planes,it is proved that the scheme of using computational ghost imaging technology to recover the different phase information of three-dimensional target object is feasible.To sum up,aiming at the problem of recovering the phase information of the three-dimensional object to be measured by using ghost imaging technology,this paper adopts the computational ghost imaging architecture,analyzes the imaging properties of the object to be measured at different phases of the light source,obtains that the phase is the key factor for recovering the three-dimensional object to be measured,and understands the main reasons affecting the imaging of the three-dimensional object to be measured.At the same time,the scheme model of tomographic ghost imaging is established,which lays a foundation for a new scheme of three-dimensional imaging,and also lays a foundation for the application of computer ghost imaging technology to restore three-dimensional target object information.