全息术
光学
空间滤波器
绘图仪
滤波器(信号处理)
空间频率
二进制数
透射率
光学滤波器
干扰(通信)
傅里叶变换
图像质量
计算机科学
材料科学
物理
人工智能
计算机视觉
图像(数学)
计算机图形学(图像)
数学
算术
量子力学
频道(广播)
计算机网络
作者
Blain Brown,Adolf W. Lohmann
出处
期刊:Applied optics
[The Optical Society]
日期:1966-06-01
卷期号:5 (6): 967-967
被引量:602
摘要
Usually a hologram is produced by means of an interference experiment. Here, however, we let a computer- guided plotter draw the hologram. The plot, which has to be minified and recorded on film, contains no grey, only binary transmittance values. Our binary holograms yield reconstructed images of a quality equal to that of images obtained from usual holograms of comparable dimensions. When a Fourier hologram is inserted into the Fraunhofer plane of a coherent image forming system, it acts as a special type of a spatial filter, a so-called optical matched filter. Our binary matched filter is suitable for optical character recognition, the same as the usual optical matched filter introduced by Vander Lugt.
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