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Minimum Resolvable Contrast (MRC) Study for CCD Low Light Level Imaging System

机译:CCD低光水平成像系统的最低可解析对比度(MRC)研究

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摘要

The performance evaluation model (MRCeye model) of CCD low light level imaging system is deduced on the basis of human eye models and experimental data. It is involved signal to noise in time frequency and modulation transfer function in spatial frequency. It is showed by calculation that the minimum value of MRC is obtained when spatial frequency equals to f_0 c / mrad, MRC increase with the decrease of spatial frequency when spatial frequency f is less than f_0 c / mrad, MRC increase with the increase of spatial frequency when spatial frequency f is larger than f_0 c / mrad, namely, The MRC has band-pass characteristic that is according to the characteristic of human eye.
机译:CCD低光水平成像系统的性能评估模型(MRCEYE模型)在人眼模型和实验数据的基础上推断出来。它是在空间频率的时间频率和调制传递函数中的信号到噪声的信号。通过计算展示,当空间频率等于F_0 C / MRad时获得MRC的最小值,随着空间频率F小于F_0 C / MRad的时,MRC增加,MRC随空间的增加而增加空间频率f大于f_0 c / mrad的频率,即MRC具有根据人眼特征的带通特性。

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