基于基尔霍夫标量衍射理论，详细分析了输入、输出平面及变换函数抽样间距的选取原则。
Based on the Kirchhoff scalar diffraction theory, the principle to choose sampling periods in the input plane, output plane and transformation function was analyzed in detail.
提出了一种新型成倒像投影关系的非相干光相关器，这种相关器具有便于校准输出平面位置的优点。
A new scheme for incoherent correlator, with an inverse image projection procedure is proposed which can be calibrated easily.
如果所有的图像具有相同的傅里叶光谱特征，而这些光谱却具有着不同的尺度，在输出平面上便可获得分形图像。
If all pictures are characterized by similar Fourier spectra, which have different scales, the optical fractal pattern can be obtained in the output plane.
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