摘要
We investigate how the splicing mode of a holographic element(hogel)affects the reconstruction of a 3 D scene to improve the reconstruction resolution of a holographic stereogram fabricated using the effective perspective image segmentation and mosaicking method(EPISM).First,the effect of hogel spatial multiplexing on holographic recording and reconstruction is studied based on the mechanism of recording interference fringes in the holographic recording medium.Second,combined with the influence of multiple exposures on the hologram's diffraction efficiency,the diffraction efficiency of the holographic stereogram is analyzed in the spatial multiplexing mode.The holographic stereogram is then regarded as a special optical imaging system.The theory of spatial bandwidth product is adopted to describe the comprehensive resolution of the holographic stereogram,which explains why hogel spatial multiplexing can significantly improve the reconstruction resolution of a holographic stereogram.Compared with the traditional printing method under the same parameters in optical experiments,hogel spatial multiplexing has a lower diffraction efficiency but a higher quality of reconstructed image,consistent with the theoretical analysis.
作者
Yunpeng Liu
Teng Zhang
Jian Su
Tao Jing
Min Lin
Pei Li
Xingpeng Yan
刘云鹏;张腾;苏健;荆涛;蔺敏;李沛;闫兴鹏(Department of Information Communication,Army Academy of Armored Forces,Beijing 100072,China;266132 Troop of the Chinese People’s Liberation Army,Beijing,China;96669 Troop of the Chinese People’s Liberation Army,Beijing,China;Department of Basic Education,Army Academy of Armored Forces,Beijing 100072,China)
基金
supported by the National Key Research and Development Program of China(Grant No.2017YFB1104500)
the National Natural Science Foundation of China(Grant No.61775240)
the Foundation for the Author of National Excellent Doctoral Dissertation of China(Grant No.201432)。
