A non-contact real-time measurement of lamp dimension based on machine vision

Abstract

In order to realize the online measurement of lamp dimension, the bulb image dimension measurement based on vision (BIDMV) is proposed. The image of lamp is obtained by camera. After image processing, such as Otsu algorithm, median filter, ellipse fitting and envelope rectangle fitting, the dimension of lamp can be calculated. Based on this method, a non-contact real-time measurement system of the lamp’s dimension is developed. The precision of the proposed method is 0.07 mm, and it can satisfy the tolerance of the National Standard GB15766.1-2008. The experiment results show that the proposed method has a faster measuring speed and a higher precision compared with other measurement methods.

Keywords

Median Filter / Machine Vision / Conveyor Belt / Filament Lamp / Ellipse Fitting

References

[1] JiY. Qian Xiaolin and Zhang Shijun, Industrial Measurement, 2013, 3: 28

[2] QianX. Quality and Standardization, 2010, 7: 42

[3] YaoH-b, MaG-d, ShenB-g, GuJ-n, ZengX-b, ZhengX-l, JiangG-p. Journal of Optoelectronics·Laser, 2014, 25: 330

[4] HuW-c, QiuZ-r, ZhangG-x. Journal of Optoelectronics·Laser, 2013, 24: 329

[5] QiuchengS, YueqianH, QingchangT, ChunjingL. Optics and Lasers in Engineering, 2014, 55: 183

[6] HamzelooE, MassinaeiM, MehrshadN. Powder Technology, 2014, 261: 185

[7] MebatsionH K, PaliwalJ. Computers in Industry, 2012, 63: 723

[8] SongL, ChangY, LiZ, WangP, XingG, XiJ. Optics Express, 2014, 22: 13641

[9] SongL, LiZ, ChangY, XingG, WangP, XiJ, ZhuT. Optoelectronics Letters, 2014, 10: 308

[10] GuoW y, WangX f, XiaX z. Optik-International Journal for Light and Electron Optics, 2014, 125: 5234

[11] XuX, XuS, JinL, SongE. Pattern Recognition Letters, 2011, 32: 956

[12] HorngS-J, HsuL-Y, LiT, QiaoS, GongX, ChouH-H, KhanM K. Journal of Visual Communication and Image Representation, 2013, 24: 956

[13] YanB, WangB, LiY. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34: 295