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用Canny算子和二值化滤波的光纤几何参数测量

Measurement of optical fiber geometric parameters with Canny operator and binaryzation filtering

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摘要

光纤的几何参数是评价光纤质量的重要指标。以近场光分布法为基础进行光纤几何参数测量, 是目前常用的一种非接触测量方法。但在测量过程中, 若光纤端面切割不平整或照明光源有波动, 直接采取边缘拟合及灰度值进行计算, 会产生较大的测量误差。使用Canny算子提取光纤端面的边缘, 将其所围进行区域二值化滤波, 利用形态学方法与运算获得光纤的几何参数, 能消除由于光照不均或切割粗糙带来的误差影响。

Abstract

The geometric parameter of optical fiber is an important index for evaluating optical fiber’s quality. Optical fiber geometry parameter measurement based on near-field light distribution method is a high-speed non-contact measurement. During the measurement, if the lighting source is fluctuating or the optical fiber end face is not smooth, large measurement errors will be taken place when the edge fitting or grayscale binarization is taken to measure. The edge of the optical fiber end surface is used as the limiting condition for the region binarization, and the geometry parameters of optical fiber were obtained by morphological processing and operation. The integral effect of the equivalent area is used to eliminate the error effects due to the uneven illumination or the roughness of the cut.

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中图分类号:TN818

所属栏目:光学测量

基金项目:国家自然科学基金青年科学基金(61605114)

收稿日期:2017-11-28

修改稿日期:2018-01-16

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李一鸣:上海理工大学 医疗器械学院 生物医学光学与视光学研究所, 上海 200093
涂建坤:上海电缆研究所, 上海 200093
项华中:上海理工大学 医疗器械学院 生物医学光学与视光学研究所, 上海 200093
江斌:上海电缆研究所, 上海 200093
王成:上海理工大学 医疗器械学院 生物医学光学与视光学研究所, 上海 200093
郑刚:上海理工大学 医疗器械学院 生物医学光学与视光学研究所, 上海 200093

联系人作者:李一鸣(276087885@qq.com)

备注:李一鸣(1995-), 男 , 硕士研究生, 从事光电检测技术研究。

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引用该论文

LI Yiming,TU Jiankun,XIANG Huazhong,JIANG Bin,WANG Cheng,ZHENG Gang. Measurement of optical fiber geometric parameters with Canny operator and binaryzation filtering[J]. Optical Technique, 2018, 44(5): 513-518

李一鸣,涂建坤,项华中,江斌,王成,郑刚. 用Canny算子和二值化滤波的光纤几何参数测量[J]. 光学技术, 2018, 44(5): 513-518

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