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Study and Comparison of Different Reconstruction Algorithms of CGH

LUO Tian-jiao;ZHANG Ya-ping;School of Science,Kunming University of Science and Technology;  
The reconstruction of CGH(Computation-Generated-Hologram)mainly contains a complete Fresnel diffraction calculation on the hologram.Based on the deep study of Fresnel diffraction algorithm,the calculation time and resolution of the reconstruction images of the three common algorithms of Fresnel diffraction was analyzed and compared.Simulation experiments were performed to validate the proposed algorithms.The results showed that the Fourier transform algorithm had the advantage of less reconstruction time.Comparing with the Fourier transform and convolution algorithms,the angular spectrum algorithm had the higher resolution reconstruction image.The results of the paper provided a good reference for the numerical reconstruction of CGH
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