The transfer function of imaging system is modeled using the linear system theory and sampling theory, and the noise is characterized with the three-dimensional noise model.
利用线性系统理论和采样理论对成像系统的传递函数进行了分析建模；借助于三维噪声模型表征了系统的噪声特性。
In this paper three-dimensional object field can be transformed into three-dimensional image field by the 4f Fourier lens system according to the theory and experiment.
本文从理论和实验上应用4 F富里叶变换透镜系统，把三维物场转换为三维象场。
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