Center searching and tracking of circular interference fringes for precision measurement

Yan Li; Shiliang Qu; Jian QuZhiyong Luo

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Center searching and tracking of circular interference fringes for precision measurement

机译：Center searching and tracking of circular interference fringes for precision measurement

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摘要

We report an algorithm for searching and tracking the center of the circular interference fringes. The algorithm was programmed by VB.NET for processing the interference images captured by CCD camera. Images were changed into binary gray-level format by the Otsu method. The circular scanning method was used to extract the outline of circular interference fringes, and then the coordinates of the perpendicular sub-tenses were used to remove noise pixels. Finally, the coordinate of the center was calculated by statistical method. The experimental results are in good agreement with the simulation images. The algorithm had subpixel accuracy and anti-noise ability. Thus, the algorithm can be used in accurate measurement for its automatic processing ability.

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来源
《Optical Engineering》 |2012年第2期|027003-1-027003-4|共4页
作者
Yan Li; Shiliang Qu; Jian QuZhiyong Luo;
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作者单位

Harbin Institute of Technology at Weihai, Department of Optoelectronics Science Weihai, 264209, China;

Harbin Institute of Technology, School of Mechatronics Engineering Harbin, 150001, China;

National Institute of Metrology Beijing, 100013, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;
关键词
center searching and tracking; circular scanning; Otsu method; circular interference fringes; anti-noise ability;

Center searching and tracking of circular interference fringes for precision measurement

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