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提出了用方波对比传递函数ＣＴＦ评价ＣＣＤ像传感器像质的方法，给出了计算ＣＣＤ像传感器方波对比传递函数ＣＴＦ的公式，并着重分析讨论了ＣＣＤ像传感器的离散性对像质的影响。实验表明，理论分析结果与实验数据基本符合，为更精确地进行ＣＣＤ及其它离散器件的系统设计提供了理论依据
A method of evaluating the image quality of CCD image sensor by square wave contrast transfer function (CTF) is proposed. The formula for calculating CTF of square wave contrast function of CCD image sensor is given. The influence of discreteness of CCD image sensor on image quality is also analyzed . The experimental results show that the theoretical analysis is in good agreement with the experimental data, which provides a theoretical basis for more accurate system design of CCD and other discrete devices