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《Acta Optica Sinica》 2010-12
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New Analytical Line Spread Function Fitting Model for Modulation Transfer Function Calculation

Li Tiecheng Feng Huajun Xu Zhihai Li Xiaotong(State Key Laboratory of Modern Optical Instrumentation,Zhejiang University,Hangzhou,Zhejiang 310027,China)  
The modulation transfer function(MTF) has been widely used to characterize and quantify the spatial resolution of a linear and space-invariant imaging system.Various methods have been proposed to determine the MTF of an imaging system.A new analytical line spread function(LSF) fitting model to calculate the MTF is proposed.The LSF parameters are confirmed by means of a nonlinear least-square fitting technique.Compared with previous models,the MTF estimate based on proposed model shows the lowest error in the presence of different noise.A practical application of MTF measurement in degraded image restoration also validates the accuracy of proposed method.
【Fund】: 国家自然科学基金(60977010);; 国家973计划(2009CB724006);; 国家863计划(2009AA12Z108)资助课题
【CateGory Index】: TP391.41
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1 Li Tiecheng Tao Xiaoping Feng Huajun Xu Zhihai(State Key Laboratory of Modern Optical Instrumentation,Zhejiang University,Hangzhou,Zhejiang 310027,China);Modulation Transfer Function Calculation and Image Restoration Based on Slanted-Edge Method[J];Acta Optica Sinica;2010-10
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