КОРЕЛЯЦІЙНО-ОПТИЧНИЙ ПІДХІД ДО ПРОБЛЕМИ ГОЛОГРАФІЧНОЇ АСОЦІАТИВНОЇ ПАМ’ЯТІ
Journal Title: BULLETIN of Kyiv Polytechnic Institute. Series INSTRUMENT MAKING - Year 2018, Vol 56, Issue 56
Abstract
Holographic associative memory problem within correlation-optical approach is discussed. Early investigations of this problem (P. J. van Heerden, A. Vander Lugt, G. W. Stroke, R. J. Collier) based, mainly, on formal Fourier analysis of associative reconstruction process. Correlation-optical approach, implemented by V. K. Polyanskii, enabled to investigate the problem of holographic associative memory via methods unused in Fourier-optics. These methods found on heartfelt interference- diffraction notions. Correlation-optical approach contributed to investigate such characteristics of associative reconstruction process as allocation of brightness along the image, peculiarities of spatial noise allocation in associative response and it vicinity, definition of the noise nature and possibilities of reliable associative reconstruction of information with the errors correction via angle separation of diffraction orders. Analysis of referenceless hologram model and nonlinear recorded off-axis holograms, reconstructed by associative method, shows wide spectrum of valuable characteristics of these holograms both for reconstruction of conserved data array missing part and for detection of small changes (“errors”) at the recorded scene, for reconstruction of total data array with error correction by partial array version, and for realization of highly efficient hetero-associative reconstruction based on noninterference mechanism of partial response connection. These characteristics of holographic associative memory (which earlier were ignored) become qualitatively and quantitatively comprehensible by implementation of correlation optical approach due to registration and detail estimation of all diffraction gratings (interconnections in the terms of neural networks) that acts in the associative reconstruction process. Shown, that reconstructed associative response quality, estimated by sight, can approximate of general off-axis holography image quality. Demonstrated, that correlation-optical approach to the problem of error-correction holographic associative memory by using nonlinearity in the filtration aria, has extensive results for realization of optical wave front conjugation (phase conjugation) via nonlinear static holography methods. These methods provide new possibilities to realize error-correction holographic associative memory, based on volume holograms (where, due to Bragg angle selectivity, one can rich essential raise of quality of reconstructed associative responses, especially for small samples from conserved image).
Authors and Affiliations
Halina Bogatyryova, Peter Polyanskii, Christina Felde, Yevhen Zelinskyi
Keywords
Related Articles
- EP ID EP568293
- DOI 10.20535/1970.56(2).2018.152241
- Views 160
- Downloads 0
ПІДВИЩЕННЯ ТОЧНОСТІ ВИМІРЮВАННЯ ВІДСТАНІ ДО МІСЦЯ ПОШКОДЖЕННЯ ЕЛЕКТРИЧНОГО КАБЕЛЮ
Electrical cables are widely used to transmit electrical energy. Often they are used to transmit information. To build computer networks also use wired communication. Damage to the electrical cable leads to loss of commu...
АВТОМАТИЗАЦІЯ ДОСЛІДЖЕНЬ ДИНАМІЧНИХ ХАРАКТЕРИСТИК ПЕРЕТВОРЮВАЧІВ ВИТРАТИ РІДИННОФАЗНИХ СЕРЕДОВИЩ
In the article the results of the equipment improvement for the investigation of the dynamic characteristics of fluid flow measuring transducers are presented. The response time determination of the medium flow and quant...
МОДЕЛЮВАННЯ МІЛКОДИСПЕРСНОЇ ТВЕРДОТІЛЬНОЇ ЗОНИ ПРИСУТНОСТІ ТЕХНОЛОГІЧНОГО ОБ’ЄКТУ РІЗНОЇ КРИВИЗНИ ПОВЕРХНІ
The article deals with the study of the nature and distribution of discrete elements in the presence of an abstract object, provided that there is a contamination of the surface of the technological object. The basic typ...
ПРИСТРІЙ ДЛЯ РЕЙТРЕЙСИНГОВОЇ АБЕРОМЕТРІЇ ОКА
In ophthalmology for the diagnosis with the purpose of further treatment of eye diseases worthwhile aberrometers are used. For objective research of the optical system of the eye, methods of simultaneous projection of th...
ПОБУДОВА МОДЕЛІ П'ЄЗОЕЛЕКТРИЧНОГО ДИСКОВОГО ТРАНСФОРМАТОРА З КІЛЬЦЕВИМ ЕЛЕКТРОДОМ В ПЕРВИННОМУ ЕЛЕКТРИЧНОМУ КОЛІ
The piezoceramics has applications in various fields of engineering and technology because of its unique properties. The relevance of the use of various functional elements of piezoelectronics in radio electronics, infor...