The Research Of Digital Holographic 3D Display Technology

In recent years,with the rapid development of 3D display technology,people have deeply explored the 3D space,3D reproduction technology has penetrated into many fields such as: aerospace,military,medical,aviation and so on.Because holographic reproduction technology can record the complete information of light wave,so it is often used for 3D display.The digital holographic technology compared to traditional holographic technology,it has characteristics of simple operation,short cycle,high reproduction image quality.Therefore,the combination of digital holography and 3D rendering technique is becoming the development trend of future.This thesis mainly uses digital holography technology to obtain the 3D information of objects.Digital holography is based on traditional holography theory,using photoelectric device instead of plate to obtain holograms,so as to realize the whole process of digital by simulating the optical diffraction field with computer.Because of the optoelectronic device itself conditions,3D information of digital holography can reproduce a large object.In this thesis,by means of image processing technology,using stepwise reproduction,splicing method to achieve.In the thesis,according to a small flat object holography,small 3D holographic reproduction and large-scale 3D holographic reproduction ideas are written.This thesis analyzes the digital holography principle,the recording and reproduction conditions are discussed,on this basic of that,building off-axis Fresnel digital holographic optical path,and using MATLAB to realize Burch digital holographic reconstruction algorithm based on positive image of coins,while doing a computer simulation holography comparative experiments,and also reconstruction on the 3D morphology of small 3D parts made in digital holography,confirmed the feasibility of the design.Expanding the applying fields of digital holography,combining digital holography technology and image stitching technology,using cylindrical transformation,using C languageto write RANSAC algorithm and weighted average fusion matching algorithm to achieve a reproduction based on a 3D digital holography methods,experimental results are given in order to achieve a large-scale 3D objects holographic reproduction.