三角形方向阈值鉴别的自动测量

郭宇翔; 李晓霞; 马德跃; 黄章斌; 赵亮

doi:10.3788/OPE.20162413.0237

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三角形方向阈值鉴别的自动测量

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- 三角形方向阈值鉴别的自动测量
- Automatic measurement of triangle orientation discrimination threshold
- 光学精密工程 2016年24卷第10s期页码：237-244
- 作者机构：
  
  脉冲功率激光技术国家重点实验室,安徽合肥,230037
- 作者简介：
- 基金信息：
  
  学院基金资助项目（No.KY14A291）()
- DOI：10.3788/OPE.20162413.0237
  中图分类号： TN201
- 收稿日期：2016-05-28，
  
  修回日期：2016-06-17，
  
  纸质出版日期：2016-11-14
- 稿件说明：
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郭宇翔, 李晓霞, 马德跃等. 三角形方向阈值鉴别的自动测量[J]. 光学精密工程, 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
郭宇翔, 李晓霞, 马德跃等. 三角形方向阈值鉴别的自动测量[J]. 光学精密工程, 2016,24(10s): 237-244 DOI： 10.3788/OPE.20162413.0237.

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.

摘要

为了减小光电成像系统三角形方向鉴别阈值模型（TOD）测量中三角形靶标方向鉴别率的主观因素影响，有效提高测量效率，研究了机器自动鉴别代替人工识别的方法，并建立了一套基于相关匹配的三角形方向阈值自动判别模型。将人眼视觉系统模型MTF作为处理靶标图像传递衰减的基础，采用基于相关运算的模板匹配法，通过计算靶标图像与模板的相关度完成了三角形方向的自动鉴别。根据标准TOD模型测量法建立了一套三角形靶标模板，并实验对比了人工识别和机器自动鉴别的正确率，采用Weibull视觉心理测量函数拟合统计结果，建立了系统的TOD曲线。结果表明，与人工识别相比，机器鉴别对三角形靶标方向鉴别正确率的平均偏离值为0.9%，机器识别与人工判别的鉴别阈值曲线能够较好的吻合，可用于光电成像系统的TOD曲线测量。

Abstract

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

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