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Шифрина, Анна Владимировна

Организационные подразделения

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Институт лазерных и плазменных технологий

Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.

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Шифрина

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Анна Владимировна

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Теперь показываю 1 - 10 из 12

Только метаданные
Multi-Factor Model of an Optical Encryption System with Spatially Incoherent Illumination
(2020) Evtikhiev, N. N.; Krasnov, V. V.; Starikov, R. S.; Shifrina, A. V.; Евтихиев, Николай Николаевич; Стариков, Ростислав Сергеевич; Шифрина, Анна Владимировна
© 2020, Allerton Press, Inc.Abstract: A multi-factor model of an optical encryption system with spatially incoherent illumination is proposed. This model takes into account the influence of the recording photosensor noise, changes in image resoltion during transmission through the optical system, spurious illumination, and noise from the synthesis of the encryption diffraction optical element on the quality of the decoded image. It is shown that the proposed model correlates well with the optical experiment (the deencryption error differs by no more than 6%).
Только метаданные
Ciphertext only attack on QR code optical encryption system with spatially incoherent illumination using a neural network
(2024) Rymov,D.A.; Shifrina,A.V.; Cheremkhin,P.A.; Ovchinnikov,A.S.; Krasnov,V.V.; Starikov,R.S.; Рымов, Дмитрий Андреевич; Шифрина, Анна Владимировна; Черёмхин, Павел Аркадьевич; Овчинников, Андрей Сергеевич; Стариков, Ростислав Сергеевич
Только метаданные
Methods of diffractive optical element generation for rapid, high-quality 3D image formation of objects divided into a set of plane layers
(2024) Zlokazov, E. Y.; Minaeva, E. D.; Rodin, V. G.; Starikov, R. S.; Cheremkhin, P. A.; Shifrina, A. V.; Злоказов, Евгений Юрьевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич; Черёмхин, Павел Аркадьевич; Шифрина, Анна Владимировна
Только метаданные
Generative adversarial neural network for 3D-hologram reconstruction
(2024) Kiriy, S. A.; Rymov, D. A.; Svistunov, A. S.; Shifrina, A. V.; Starikov, R. S.; Cheremkhin, P. A.; Кирий, Семен Алексеевич; Рымов, Дмитрий Андреевич; Свистунов, Андрей Сергеевич; Шифрина, Анна Владимировна; Стариков, Ростислав Сергеевич; Черёмхин, Павел Аркадьевич
Только метаданные
New customizable digital data container for optical cryptosystems
(2021) Cheremkhin, P. A.; Evtikhiev, N. N.; Krasnov, V. V.; Ryabcev, I. P.; Shifrina, A. V.; Starikov, R. S.; Черёмхин, Павел Аркадьевич; Евтихиев, Николай Николаевич; Шифрина, Анна Владимировна; Стариков, Ростислав Сергеевич
© 2021 IOP Publishing LtdQuick response (QR) codes have recently become a popular data container for optical encryption systems. Their effectiveness is based on the error-correction codes, that allow them to decode data even when the media itself is significantly damaged. However, QR codes were developed for specific applications and have a significant number of elements that are superfluous for optical encryption. In this paper we present a new customizable digital data container (CDDC), designed to replace QR codes in optical encryption. CDDC is based on the error-correction codes too, but has a wide range of configurable parameters and can be specialized for a particular optical setup. The results of noise robustness analysis, numerical and optical experiments on application of the new container in a spatially incoherent optical encryption system demonstrate the supremacy of CDDC in comparison to QR codes in terms of error correction capabilities and data density.
Только метаданные
Object image reconstruction: method for reconstructing images from digital off-axis holograms using a generative adversarial network
(2024) Kiriy, S. A.; Svistunov, A. S.; Rymov, D. A.; Starikov, R. S.; Shifrina, A. V.; Cheremkhin, P. A.; Кирий, Семен Алексеевич; Свистунов, Андрей Сергеевич; Рымов, Дмитрий Андреевич; Стариков, Ростислав Сергеевич; Шифрина, Анна Владимировна; Черёмхин, Павел Аркадьевич
Только метаданные
Scheme of lensless optical encryption with spatially incoherent illumination
(2019) Krasnov, V. V.; Ryabcev, I. P.; Shifrina, A. V.; Шифрина, Анна Владимировна
© OSA 2019 © 2019 The Author(s)Lensless encryption scheme with spatially incoherent illumination is presented. Encoding diffraction optical element was designed to form desired light distribution in photosensor plane under spherically diverging illumination. Validity is supported by results of optical experiments.
Только метаданные
Asymmetric image optical encryption under spatially incoherent illumination
(2020) Cheremkhin, P. A.; Evtikhiev, N. N.; Krasnov, V. V.; Rodin, V. G.; Shifrina, A. V.; Starikov, R. S.; Черёмхин, Павел Аркадьевич; Евтихиев, Николай Николаевич; Родин, Владислав Геннадьевич; Шифрина, Анна Владимировна; Стариков, Ростислав Сергеевич
In this paper new method of asymmetric optical encryption is presented. It is based on the double encryption using spatially incoherent illumination: to obtain a ciphertext a plaintext is encoded twice, first time by sender, second time-by recipient. This way no exchange of encryption keys is required. Two variants of this method were analyzed: one in which both encryption procedures are implemented optically and another one in which the first operation is done optically and the second one-numerically. Both variants were numerically simulated and the latter one was implemented optically. Results of numerical and optical experiments demonstrate high quality of decrypted images (decoding error 0.19), thus confirming usability of proposed method.
Только метаданные
Lensless optical encryption with speckle-noise suppression and QR codes
(2021) Cheremkhin, P. A.; Evtikhiev, N. N.; Krasnov, V. V.; Rodin, V. G.; Ryabcev, I. P.; Shifrina, A. V.; Starikov, R. S.; Черёмхин, Павел Аркадьевич; Евтихиев, Николай Николаевич; Родин, Владислав Геннадьевич; Шифрина, Анна Владимировна; Стариков, Ростислав Сергеевич
© 2021 Optical Society of AmericaThe majority of contemporary optical encryption techniques use coherent illumination and suffer from speckle-noise pollution, which severely limits their applicability even when information encoded into special “containers” such as a QR code. Spatially incoherent encryption does not have this drawback, but it suffers from reduced encryption strength due to formation of an unobscured image right on top of the encrypted one by undiffracted light from the encoding diffraction optical element (DOE) in axial configuration. We present a new lensless encryption scheme, experimentally implemented with two liquid crystal spatial light modulators, that does not have this disadvantage because of a special encoding DOE design, which forms desired light distribution in the photosensor plane under spherically diverging illumination without a converging lens. Results of optical experiments on encryption of QR codes and successful information retrieval from decoded images are presented. Conducted analysis of encryption strength demonstrates sufficiently high key sensitivity and large enough key space to resist any brute force attacks.
Только метаданные
Lensless Optical Encryption of Multilevel Digital Data Containers Using Spatially Incoherent Illumination
(2022) Cheremkhin, P.; Evtikhiev, N.; Krasnov, V.; Ryabcev, I.; Shifrina, A.; Starikov, R.; Черёмхин, Павел Аркадьевич; Евтихиев, Николай Николаевич; Шифрина, Анна Владимировна; Стариков, Ростислав Сергеевич
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.The necessity of the correction of errors emerging during the optical encryption process led to the extensive use of data containers such as QR codes. However, due to specifics of optical encryption, QR codes are not very well suited for the task, which results in low error correction capabilities in optical experiments mainly due to easily breakable QR code’s service elements and byte data structure. In this paper, we present optical implementation of information optical encryption system utilizing new multilevel customizable digital data containers with high data density. The results of optical experiments demonstrate efficient error correction capabilities of the new data container.