High accuracy measurement of the MTF of electro-optical Imaging System
Abstract
In This study , an improved slanted Edge method was proposed . It had a High accuracy for
measuring Modulation Transfer Function ( MTF"of") electro-optical imaging system. We put forward an automatic
Determination of the High and low thresholdmodified Canny operator to detect the Edge
points , and Edge slant angle is obtained by linear fitting to the edge points . In Process to fitting
The edge spread function (ESF) by Fermi function , We put forward a modified method to reduce the
Influence o noise. It was composed The averaging in adjacent region and setting this tolerance to error. The
Method In this paper is proved efectively by E x perimental results, and analyzing This influence to the
Change To the [] Edge slant Angle then noise on this MTF measurement accuracy. The e xperimental results show
that on Measurement accuracy of on modifiedslanted Edge method s 0.004 9, and The Repeat
accuracy s 0.003 1,which s higher than this Traditional methods. It proves that the Modified slanted
Edge method has High measurement and repeat accuracy, and also has a better immunity to noise , and Edge
Angle.
References
LIU zhi-ying , DING Qiu-wei , LI Dan, E^az. Optical design of large aperture and high zoom ratio infrared target
simulation ^^ ^TEM[J]. Ada P ho Ionic a sinica,2016 , 4 ):0412003. Liu Zhiying, Ding Qiuwei , li dan, etc . Infrared target simulation system with large aperture and high change ratio design []. Photonics
Report , 2016, 4:0412003. 2. Kangji-qiang ,iiao Qun , Ciieng xue-min. Measurement and comparison of One-and two-dimensional modulation
transfer function of optical imaging systems based on the random target method [J]. 2014 , (Ten): 104105. 3. sedigiieii N , Kiiosro M. Measurement of the modulation transfer function of a charge-coupled device array by the
combination O f the self-imaging effect and slanted edge method [J]. applied Optics,2013, - (): 4724-4727. 4. JEFFREY T 0, RICHARD L E , EDDIE L J. Comparison of tilted slit and tilted edge superresolution modulation
transfer function Techniques[j]. optical , 2007 , 1:016403. [5] photography-electronic still picture cameras-resolution
Measurement[s]. ISO Standard 12233: +
LI Tiecheng , TAO xiao-ping , FENG Iiua-jun , D al. modulation transfer function calculation and image
restoration based on Slanted-edge method [J]. acla Oplica sinica , ,, (a) : 2891-2897. Li Tiecheng , Tao , Feng Huajun , , and so on . modulation transfer letter based on tilt Edge method
count and image recovery []. Journal of Optics , , (): 2891-2897. [7] Ziiao zhan-ping, FU Xing-ke, Iuang qiao-in, D on orbit MTF test the remote sensors based on knife-edge method
[J]. spacecraft Recovery & Remote Sensing , 2009 (2): 37-43. Zhao Jinping , Sinchenko , Huang Chilin , , and so on . Space Optical remote sensor based on edge method in
orbit MTF Test research []. Aerospace Return and remote sensing , 2009, 2: 3743
GAO Feng, Ziiu qing-zhen, Ziiou zhong-xing , D Accurate measurement of MTF based on interpolation floating
method [J]. Nanotechnology and Precision Engineering ,2014, 2 : 107-116. Peak , Zhu Qing Array , Zhou Zhongxing , , and so on . A floating based on the number of
interpolation MTF To accurately measure
measure Method []. Nano-technology and precision engineering , 2014 (2): 107-116. [9] GONG shao-run , GAO Feng , YU Ya-Jie. Edge Measurement for modulation transfer function in digital
radiography X-ray imaging system[j]. Journal of Tianjin University,,7: 611-618. Shaorun , Peak , Xu Yajie . Digital X X-ray imaging System MTF edge of
Measurement []. Journal of Tianjin University , 7: 107-116. [ten] ziiu Zhi-liang , LIU Fu-guo , TAO Xiang-yang. An improved slanted-edge method to obtain edge spread function
[J]. journol of Nanchang ( &
Technology , 2013 , 1 : 78-82. Zhu Zhiliang , Liu Fu , Tao Xiangyang . Improved tilt edge Edge method get edge extension
function [J] . Journal of Nanchang University ( Engineering Edition ), 2013, 1:78-82. [one] Keniciiiro M, TAKAYUKI Y, Yukiiiiro N, EL at. Modified slanted-edge method and multidirectional modulation transfer function estimation [J]. b20>Optics
expre^, 2015, all
(5): 6040-6046. [A] YIN Fang-fang, Maryellen L G, Kunio D. Measurement of presampling modulation transfer function of film
Digi Tizers using a curve fitting technique[j]. Medical
Physics, 1987 (4): 537-. [] ALEXIS P T, JONATHAN m. Measurement of the modulation transfer function of infrared cameras[j]. Op Li Cat
E N G Inrerin G , 1995 (6) : 1808-1817. [] FAN Chong, LI guan-da, WU Chao-yun, EL at. High Accurate estimation the spread function based on improved
reconstruction of slant edge[j]. acLa Geo D aelic A E Lcarlographica Sirica, 2015 : 1219-1226. fan Chong , Li Guanda , Wu Shuyun , , and so on . point diffusion function improved tilt edge side weight built high
accuracy estimate [J]. Journal of Surveying and Mapping , 2015, : 1219- 1226 .
| Remote Sensing
LI Jin, XING Fei, WANG Chong. High-precision on-orbit Assessment of MTF for Space CCD camera [J]. Ada opiica
Sirica, 2015 (2): 0211003. Li jin , Shi , Wang Yu . Space CCD Camera High Accuracy in-orbit modulation transfer letter
Count [J] . Journal of Optics , 2015, 2:0211003.
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