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本文叙述了一种三维物场的定量再现、分析方法，其中采用了电子全息法，它包括：１）三维物场全息图的数字记录，２）全息图面上复振幅分布的数字再现，３）三维物场的逐层再现．由此可以获得整个三维物场的信息，这一方法以ＣＣＤ摄象机作为记录介质，然后把由ＣＣＤ采集的数字全息图输入计算机，利用频谱滤波法经过傅里叶变换、频谱分离、反傅里叶变换再现出全息图面上的复振幅.在此基础上借助频域衍射公式可再现出任何一层（平行于全息图面）上的图象.这样，我们用这一数字再现和逐层分析的方法便可研究三维物场的一些特性，如物体在其中的位置等．整个再现过程是由计算机软件实现，其中采用了二维快速傅里叶变换算法，再现过程可在几分钟内完成.本文同时还给出了这一数字再现方法的空间分辨率，并且通过计算机模拟展示了一个理想三维物场的再现过程及再现结果．最后指出了这一方法存在的问题及未来的应用前景．
This paper describes a method for quantitatively reproducing and analyzing three-dimensional object fields, in which an electronic holography method is used. The method includes: 1) digital recording of a hologram in a three-dimensional object field, 2) digital reproduction of a complex amplitude distribution on a hologram surface, 3 Layer-by-layer reconstruction of three-dimensional object field. This can get the information of the whole three-dimensional object field. In this method, a CCD camera is used as a recording medium, and then a digital hologram collected by the CCD is input into a computer. After Fourier transform, spectrum separation and inverse Fourier transform The Fourier transform reproduces the complex amplitudes on the hologram, on the basis of which the image on any layer (parallel to the hologram) can be reproduced by means of the frequency-domain diffraction formula. The method of layer analysis can study some characteristics of the three-dimensional object field, such as the position of the object in it. The whole reproduction process is realized by the computer software, in which a two-dimensional Fast Fourier Transform algorithm is used and the reproduction process can be completed in a few minutes.This paper also gives the spatial resolution of this digital reproduction method, and through computer simulation The reproduction process and the reproduction result of an ideal three-dimensional object field are shown. Finally, it points out the problems existing in this method and the future application prospects.