ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)

vol 64 / December, 2021

DOI 10.17586/0021-3454-2017-60-4-347-352

UDC 004.942


O. V. Kofnov
St. Petersburg Institute for Informatics and Automation of the Russian Academy of Sciences, Laboratory of Information Technologies in System Analysis and Modeling;

E. L. Lebedev
A. F. Mozhaisky Military Space Academy, Department of Quality Control and Weapon Testing; Associate Professor

A. V. Mikhailenko
A. F. Mozhaisky Military Space Academy, Department of Quality Control and Weapon Testing; Adjunct

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Abstract. An automatic searching method for local maxima of light intensity distribution along diffraction pattern image is presented. The proposed approach consists in slicing the initial intensity oscillation diagram by approximation function for average values so that the required diffraction peaks will lie above the approximating curve, and therefore the local extrema can be found with any algorithm searching for maximum in an uninterrupted segment. Calculated coordinates of local maxima can be used for determining geometrical parameters of periodical structures with the double Fourier transform method. The method is recommended for the use in automatic quality control.
Keywords: local maxima, physical structure, Fourier transform, diffraction pattern, quality control

  1. Petrov N.I., Sadin D.V. Nerazrushayushchiy kontrol' kachestva proizvodstva i ispytaniya tekhnologicheskogo oborudovaniya kompleksov (Non-destructive Quality Control of the Production and Testing of Technological Equipment Complexes), St. Petersburg, 2005, 60 p. (in Russ.)
  2. Lebedev E.L. Osnovy metrologii (Fundamentals of Metrology), St. Petersburg, 2007, 115 р. (in Russ.)
  3. Kofnov O.V. Vestnik Sankt-Peterburgskogo gosudarstvennogo universiteta tekhnologii i dizayna, Ser. 1. Estestvennye i tekhnicheskie nauki, 2014, no. 2, pp. 38–45.(in Russ.)
  4. Kofnov O.V. Journal of Instrument Engineering, 2015, no. 10(58), pp. 855–858. (in Russ.)
  5. Patent RU 2508537, G 01 N 21/898, G 01 N 33/36, Sposob izmereniya geometricheskikh parametrov struktury tekstil'nykh materialov (Way of Measurement of Geometrical Parameters of Structure of Textile Materials), Shlyakhtenko P.G., Kofnov O.V., Rudin A.E. Published. 27.02.2014, Bulletin 6.
  6. Kofnov O.V., Shlyakhtenko P.G., Rudin A.E. The News of higher educational institutions. Technology of Light Industry, 2013, no. 3, pp. 23–26. (in Russ.)
  7. Shlyakhtenko P., Kofnov O. Fibers, 2013, no. 1, pp. 36–46.
  8. Shlyakhtenko P.G., Pimenov V.I., Kofnov O.V. Avtomatizatsiya i sovremennye tekhnologii, 2013, no. 7, pp. 20–27. (in Russ.)
  9. Shlyakhtenko P.G., Truevtsev N.N. Tr. MNK po sovmestnomu proektirovaniyu SfP-973658 (NATO) (Proceedings of the Scientific Conference on Cooperative Design SfP-973658 (NATO)), 30 June–1 July 2004, рр. 43–48. (in Russ.)
  10. Certificate on the state registration of the computer programs 2012618350, Programma Fur'e obrabotki mikroizobrazheniy poverkhnosti tekstil'nykh materialov dlya opredeleniya znacheniy periodicheskikh parametrov issleduemoy struktury (Fourier's Program of Processing of Microimages of a Surface of Textile Materials for Definition of Values of Periodic Parameters of the Studied Structure), Shlyakhtenko P.G., Kofnov O.V., Nefedov V.P. 14.09.2012. (in Russ.)
  11. Lebedev E.L., Dobrolyubov A.N., Mikhaylenko A.V., Lebedev  A.S. Tr. NTK priborostroitel'nykh organizatsiy Roskosmosa "Informatsionno-upravlyayushchie i izmeritel'nye sistemy-2016" (Proceedings of the Scientific and Technical Conference of the Instrument-Making Organizations of Roskosmos "Management Information and Measuring Systems-2016"), 2016, рр. 163–167. (in Russ.)
  12. Cheng D., Schwartzman A. Extremes, 2015, no. 2(18), pp. 213–240.
  13. Vio R., Andreani P. Astronomy & Astrophysics, 2016, no. A20(589), pp. 1–7.