[1] [1] P. F. Judy. The line spread function and modulation transfer function of a computed tomographic scanner [J]. Med. Phys.,1976,3(4):233-236

[2] [2] R. E. Swing. The case for the pupil function[C]. SPIE,1974,46:104-112

[3] [3] H. Lavin,M. Quiek. The OTF in electro-optical imaging systems[C]. SPIE,1974,46:279-286

[4] [4] Feng Zhiwei,Cheng Haobo,Song Qian et al.. Modulation transfer function measurement of electron multiplying CCD[J]. Acta Optica Sinica,2008,28(9):1710-1716

[5] [5] Li Yaobin,Kong Xiangchuang. Modulation transfer function measurement method of digital X-ray photography[J]. J. Chinese Modern Imaging,2005,2(5):424-425

[6] [6] Yue Min Zhu,Vale′rie Kaftandjian,Gilles Peix et al.. Modulation transfer function evaluation of linear solid-state X-ray-sensitive detectors using edge techniques[J]. Appl. Opt.,1995,34(22):4937-4943

[7] [7] E. Samei,M. J. Flynn,D. A. Reimann. A method for measuring the presampled MTF of digital radiogaphic systems using at edge test device[J]. Med. Phys.,1998,25(1):102-113

[8] [8] P. R. Granfors,R. Aufrichtig. Performance of a 41×41 cm2 amorphous silicon flat panel X-ray detector for radiographic imaging applications [J]. Med. Phys.,2000,27(6):1324-1331

[9] [9] T. Yamazakia,M. Nokita. A method to measure the presampling MTF using a novel edge test device and algorithm [C]. SPIE,2004,5368:696-704

[10] [10] J. C. Feltz,M. A. Karim. Modulation transfer function of charge-coupled devices[J]. Appl. Opt.,1990,29(5):717-722

[11] [11] Ma Weihong. Study of MTF Measurement Technique Based on Image Analysis[D]. Beijing:Graduate University of Chinese Academy of Sciences,2005

[12] [12] Wang Wanli,Jiang Xiaoguo,Wu Tinglie et al.. Data processing method of measuring CCD imaging MTF with step sample[J]. J. Opto.·Laser,2002,13(2):173-175

[13] [13] Ding Xiaohua,Li You,Yu Qifeng et al.. CCD Noise calibration and its application in edge location[J]. Acta Optica Sinica,2008,28(1):99-104

[14] [14] Zhang Hanling. Matlab in Image Processing[M].Bingjing:Tsinghua University Press,2008

[15] [15] Bai Junqi,Chen Qian. Algorithm for infrared image noise filtering based on anisotropic diffusion[J]. Acta Optica Sinica,2008,28(5):866-869

[16] [16] Huang Zhen. The Study of MTF Test Base on Digital Fourier Analysis[D]. Xi′an:Xi′an University of Technology,2007

[17] [17] Ye Xun. A Digital X-ray Imaging System for Small-Animal Studies[D]. Wuhan:Huazhong University of Science and Technology,2004