

Diagnostics of materials by diffraction optical methods
https://doi.org/10.26896/1028-6861-2022-88-3-23-28
Abstract
The internal state of the material formed as a result of technological processing, indirectly affects the state of the material surface. A non-contact method of non-destructive control of the state of materials based on a visual analysis of the surface, requires high-quality images which can be obtained either using lens objectives or lenseless technologies. The results of studying image processing obtained by lensless technologies are presented. We used methods for modeling phase masks and image processing based on Gerchberg – Saxton iterative algorithms, adaptive-additive and phase mask rotation based algorithms. Materials such as granite, graphite, sand and carbon steel were analyzed. It is shown that the construction of cameras can provide significant reduction of their dimensions at the same or even improved characteristics. The images obtained using lensless technologies and the proposed methods of image processing also provide a significant increase in the accuracy of visual inspection of materials. The results obtained can be used in refining lensless technologies, improving the quality of images and reducing time of their processing.
About the Authors
V. I. MarchukRussian Federation
Vladimir I. Marchuk
147, ul. Shevchenko, Shakhty, Rostovskaya obl., 346500
A. I. Okorochkov
Russian Federation
Alexander I. Okorochkov
147, ul. Shevchenko, Shakhty, Rostovskaya obl., 346500
V. V. Semenov
Russian Federation
Vladimir V. Semenov
147, ul. Shevchenko, Shakhty, Rostovskaya obl., 346500
I. A. Sadrtdinov
Belarus
Ilya A. Sadrtdinov
147, ul. Shevchenko, Shakhty, Rostovskaya obl., 346500
I. O. Nikishin
Russian Federation
Ivan O. Nikishin
147, ul. Shevchenko, Shakhty, Rostovskaya obl., 346500
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Review
For citations:
Marchuk V.I., Okorochkov A.I., Semenov V.V., Sadrtdinov I.A., Nikishin I.O. Diagnostics of materials by diffraction optical methods. Industrial laboratory. Diagnostics of materials. 2022;88(3):23-28. (In Russ.) https://doi.org/10.26896/1028-6861-2022-88-3-23-28