Measurement of modulation transfer function for IR imaging system

	Measurement of modulation transfer function for IR imaging system
	Li, H.; C.-X. Yan; P. Yu and J.-B. Shao
	2016
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	24 期号:4
摘要	In this study, an improved slanted edge method was proposed. It had a high accuracy for measuring the Modulation Transfer Function (MTF) of electro-optical imaging system. We put forward an automatic determination of the high and low threshold modified Canny operator to detect the edge points, and the edge slant angle is obtained by linear fitting of the edge points. In the process of fitting the edge spread function (ESF) by Fermi function, we put forward a modified method to reduce the influence of noise. It was composed of averaging in adjacent region and setting the tolerance of error. The method in this paper is proved effectively by the experimental results, and analyzing the influence of the change of the edge slant angle and noise on the MTF measurement accuracy. The experimental results show that the measurement accuracy of the modified slanted edge method is 0.004 9, and the repeat accuracy is 0.003 1, which is higher than the 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. 2016, Science Press. All right reserved.
文章类型	期刊
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57017
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. Yan,P. Yu and J.-B. Shao. Measurement of modulation transfer function for IR imaging system[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2016,24(4).
APA	Li, H.,C.-X. Yan,&P. Yu and J.-B. Shao.(2016).Measurement of modulation transfer function for IR imaging system.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,24(4).
MLA	Li, H.,et al."Measurement of modulation transfer function for IR imaging system".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 24.4(2016).

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Measurement of modul（951KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载