GUO Yu-xiang, LI Xiao-xia, MA De-yue etc. Automatic measurement of triangle orientation discrimination threshold[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 237-244
GUO Yu-xiang, LI Xiao-xia, MA De-yue etc. Automatic measurement of triangle orientation discrimination threshold[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 237-244 DOI: 10.3788/OPE.20162413.0237.
Automatic measurement of triangle orientation discrimination threshold
In order to reduce the impact of subjective factors on the triangle target orientation discrimination rate in Triangle Orientation Discrimination Threshold (TOD) measurement for the opto-electronic imaging system
and to effectively improve the measurement efficiency
an automatic machine vision method for replacement of artificial discrimination was proposed
and a TOD automatic discrimination modal was established based on correlation matching. In this mode
the MTF in human visual system was taken as the base for the treatment of target image transmission attenuation. The automatic triangle orientation was discriminated by calculating the relevancy between target image and template with the correlation calculation-based template matching method. In addition
a triangle target template was established based on the standard TOD model measurement for comparison of the accuracy between the artificial discrimination and the automatic mechanical discrimination. Finally
a systematic TOD curve was plotted in accordance with the fitting results of the Weibull visual and psychological measurement function. It indicates that compared with artificial discrimination
the average accuracy deviation for mechanical triangle target orientation discrimination is 0.9%
which means the curves for discrimination threshold through artificial discrimination and mechanical discrimination are in good agreement and can be applied to the TOD curve measurement for opto-electronic imaging system.
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references
何国经,张建奇,王晓蕊,等. 用于三角形方向鉴别测量的客观判别模型[J]. 光学学报, 2007,27(3):437-442. HE G J, ZHANG J Q, WANG X R, et al.. An objective discrimination model for triangle orientation discrimination threshold measurement[J]. Acta Optica Sinica, 2007,27(3):437-442. (in Chinese)
初秀琴,胡方明,王飞. 基于神经网络的三角阈值判别法(TOD)设计[J]. 红外技术, 2009,31(12):716-719. CHU X Q, HU F M, WANG F. The realization of triangle orientation discrimination threshold using artificial neural network[J]. Infrared Technology,2009,31(12):716-719. (in Chinese)
DÉSAULNIERS P, THIBAULT S. Performance evaluation of panoramic electro-optic imagers using the TOD method[J]. SPIE, 2011, 8014(3):760-771.
王晓蕊. 红外焦平面成像系统建模及TOD性能表征方法研究[D].西安:电子科技大学,2005. WANG X R. Research on Modeling of IR FPA Imaging System & TOD Performance Characterization Method[D]. Xi'an:Xidian University,2005. (in Chinese)
DRIGGERS R G, COX P, EDWARDS T. Introduction to Infrared and Electro-optical Systems[M]. Artech House, 1999.
BIJL P. Guidelines for accurate TOD measurement[J]. SPIE, 1999, 370(3701):14-25.
PEARSON K. Mathematical contributions to the theory of evolution. Ⅲ. Regression, heredity and panmixia[J]. Philos. Trans. Royal Soc. London, 1896, 187:253-318.
DE LANGE J D, VALETON J M, BIJL P. Automatic characterization of electro-optical sensors with imageprocessing,using the triangle orientation discrimination (TOD) method[J]. SPIE, 2000, 3701, 104-111.
孙正. 数字图像处理与识别[M]. 北京:机械工业出版社, 2014:182-192. SUN ZH. Process and Identification of Numeral Image[M].Beijing:Mechanical Industry Press,2014:182-192. (in Chinese)
张影. 空间相机的颤振成像调制传递函数及仿真实验[J]. 光学精密工程, 2011, 19(9):2146-2153. ZHANG Y. Imaging MTF of space camera under vibration and simulation[J].Opt. Precision Eng., 2011, 19(9):2146-2153. (in Chinese)
TERRY K. A guide to chi-squared testing[J]. Biometrics, 1996, 39(4):157-158.
姚军财, 刘贵忠. 结合人眼对比度敏感视觉特性的视频质量客观评价[J]. 光学精密工程, 2016, 24(3):659-667. Yao J C, LIU G ZH. Video quality objective assessment combined contrast sensitivity characteristics of human visual system[J]. Opt. Precision Eng., 2016, 24(3):659-667. (in Chinese)