Taking into account a priori information in the iterative reconstruction of images of foundry products
https://doi.org/10.29235/1561-8358-2023-68-3-242-251
Abstract
Methods of restoring images and properties of non-destructive testing objects based on solving inverse problems (problems of restoring distribution functions of unknown characteristics of an object based on the results of indirect measurements) are considered. Management methods are based on solving inverse problems and allow you to get the most complete information about the distributed properties of an object. The need to attract additional information imposes serious restrictions on the development of universal applied algorithms for solving incorrectly set tasks. As a rule, individual additional information is available for each specific non-destructive testing task. An effective numerical algorithm for solving an incorrectly posed problem should be focused on taking this information into account at each stage of the solution search. When solving an applied problem, it is also necessary that the algorithm corresponds to both the measuring capabilities and the capabilities of available computing tools. The problem of low-projection X-ray tomography is always associated with a lack of initial data and can only be solved using a priori information. To introduce the necessary additional information into the numerical algorithm, the methods of iterative reconstruction of tomographic images are identified as the most suitable. One of the approaches to the presentation of this kind of information is described. A practical solution to this problem will expand the scope of the X-ray tomography method.
About the Authors
S. A. Zolotarev
Institute of Applied Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
Sergei A. Zolotarev, Dr. Sci. (Engineering), Chief Researcher at Institute of Applied Physics
16, Akademicheskaya Str., 220072, Minsk
A. T. T. Taruat
Belarusian National Technical University
Belarus
Belarus
Taruat Ahmed Talat Taufik, Post-Graduate Student
65, Nezavisimosti Ave., 220013, Minsk
E. G. Bilenko
Physical-Technical Institute of the National Academy of Sciences of Belarus
Belarus
Belarus
Eduard G. Bilenko, Researcher, Deputy Head of the Laboratory of Precision Stamping
10, Academician Kuprevich Str., 220141, Minsk
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