Application of the associative recovery method in the challenges of increase informativity of distorted images and detection of minor changes in stored samples

Authors

DOI:

https://doi.org/10.15587/2706-5448.2022.266429

Keywords:

holographic associative memory, hologram models, associative information recovery, physical modeling

Abstract

The object of research is optical-electronic methods and related digital information processing. One of the most problematic areas is the reconstruction of missing parts of the stored data and the inability to detect minor changes in the stored samples, as well as the reconstruction of the entire corrected template from its incomplete version.

As part of the study, a correlation-optical approach to the problem of holographic associative memory was used, which made it possible to achieve highly efficient heteroassociative reconstruction of the entire corrected template from its incomplete version. The analysis of hologram models with phantom images and nonlinearly recorded holograms read in the associative mode shows a wide range of useful possibilities. It is primed not only in the tasks of reconstruction of data, but also in the case of insignificant changes in savings, highly effective heteroassociative reconstruction based on a non-interference mechanism. The analysis of the results of the correlation-optical approach to the problem of holographic associative memory shows that the described method opens up additional opportunities for solving the problems of detecting small changes in the object scene, which is important, in particular, for early registration of events and phenomena. It is related to the fact that the detection and localization of changes is carried out according to the difference in intensity across the image field (the effect of brightness inversion in the phantom image of referenceless hologram): the brightness of the image of the changed area is higher, and to a greater extent, the smaller the changes compared to the reference image. It should be especially noted that the specified properties of the nonlinear-holographic associative memory are realized not algorithmically, but physically, taking into account the fundamental nonlinearity of all natural processes, which is neglected when conducting a superficial (in the first approximation) analysis. Physical modeling of associative memory based on second-order holograms does not involve any circuit complications compared to the standard holographic procedure.

Author Biography

Olena Husak, Yurii Fedkovych Chernivtsi National University

PhD

Department of Applied Mathematics and Information Technologies

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Application of the associative recovery method in the challenges of increase informativity of distorted images and detection of minor changes in stored samples

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Published

2022-10-31

How to Cite

Husak, O. (2022). Application of the associative recovery method in the challenges of increase informativity of distorted images and detection of minor changes in stored samples. Technology Audit and Production Reserves, 5(2(67), 11–14. https://doi.org/10.15587/2706-5448.2022.266429

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Section

Information Technologies: Reports on Research Projects