Measurement of the Modulation Transfer Function of Infrared Imaging System by Modified Slant Edge Method

	Measurement of the Modulation Transfer Function of Infrared Imaging System by Modified Slant Edge Method
	Li, H.; C. X. Yang and J. B. Shao
	2016
发表期刊	Journal of the Optical Society of Korea
卷号	20 期号:3
摘要	The principles of optical Modulation Transfer Function(MTF) measurement by the edge method for an optical system were researched and an improved inclined edge method for the MTF measurement of an infrared imaging system was proposed. As the edge angle measurement error and noise will cause the MTF measurement error of the infrared system, the Canny operator, line fitting and Edge Spread Function (ESF) reconstruction row number changes were combined to improve the measuring accuracy of the MTF, meanwhile, an effective denoise algorithm for the ESF and the Line Spread Function (LSF)was used to reduce the effect of noise on the MTF measuring accuracy. With the methods mentioned above, the measurement errors of MTF were reduced systematically. An experimental platform was set up. Based on the theoretical model of infrared imaging system and MTF curve obtained by detected parameters, the feasibility of the proposed method was verified and the effect of changed edge angle on the MFT measuring accuracy was analyzed. Experimental results show that the measurement accuracy of MTF curve obtained by the method is 0.010, the measuring repeat accuracy is 0.008, and the edge angle should be kept between 2 and 10 . It concludes that the method effectively reduces the influences of the edge angle measurement error and noise on the MTF measurement, and the measuring results show good measurement repeatability. 2016, Science Press. All right reserved.
文章类型	期刊
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57018
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, H.,C. X. Yang and J. B. Shao. Measurement of the Modulation Transfer Function of Infrared Imaging System by Modified Slant Edge Method[J]. Journal of the Optical Society of Korea,2016,20(3).
APA	Li, H.,&C. X. Yang and J. B. Shao.(2016).Measurement of the Modulation Transfer Function of Infrared Imaging System by Modified Slant Edge Method.Journal of the Optical Society of Korea,20(3).
MLA	Li, H.,et al."Measurement of the Modulation Transfer Function of Infrared Imaging System by Modified Slant Edge Method".Journal of the Optical Society of Korea 20.3(2016).

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