Research on the Dark Stripes Extraction Algorithm for Measuring Diameter with Diffraction


The optical diffraction is a major means of minute diameter measurements. Since the light intensity of the diffraction fringe, mainly distributed in the central bright stripes, and that will lead to a relatively low SNR for the signal of the senior stripes. The traditional dark stripes extraction algorithm affected greatly by the noise. So this paper presents an algorithm that could effectively eliminate the gross errorcaused by the noise. Than by curve fitting the local signal of the diffraction pattern with the least square principle, the system could achieve a high measurement precision.

Share and Cite:

Q. Liu and F. Wei, "Research on the Dark Stripes Extraction Algorithm for Measuring Diameter with Diffraction," Optics and Photonics Journal, Vol. 3 No. 2B, 2013, pp. 53-56. doi: 10.4236/opj.2013.32B013.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] A. K. Soraya, “Measurement of Wire Diameter by Optical Diffraction,” Optics&Laser Technology, Vol. 36, 2004, pp. 63-67.doi:10.1016/S0030-3992(03)00134-8
[2] F.S. Zhang and C. Liu, “Superpresicion Laser Diffration Measuring System for Fine Diameter,”Chinese Journal of Scientific Instrument, Vol. 22, 2001, pp.149-150.
[3] L. Q. He, Y. Gao and G. G. Wang, “Calibration Method for CCD Laser Diffration Filament Diameter Measurement System,” Journal of Jilin University, Vol. 38, 2008, pp.182-184.
[4] Y. Zhang, “Two Improving Methods of Object Orientation Precision by CCDs,” Journal of Optoelectronics·Laser, 2003.
[5] D. Y. Sun, G. X. Zhou and D. Liu, “Measurement of Filament by Diffraction Method,” Instrumentation Technology, 2002.
[6] K. Wang and Z. J. Mao, “Actualing Least-Squares Curve-Fitting Based on Matlab,” Journal of Beijing Broadcasting Instute, Vol. 12, pp. 52-56.
[7] K. L. Ding, Y. Z. Shen and J. K. Ou, “Methods of Line-Fitting Based on Total Least-Squares,” Journal of Liaoning Technical University, Vol. 29, 2010, pp.44-47.

Copyright © 2022 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.