Персона:
Родин, Владислав Геннадьевич

Организационные подразделения

Организационная единица

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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Родин

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Владислав Геннадьевич

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Теперь показываю 1 - 10 из 36

Только метаданные
Improving the reliability of digital camera identification by optimizing the algorithm for comparing noise signatures
(2024) Kozlov, A. V.; Nikitin, N. V.; Rodin, V. G.; Cheremkhin, P. A.; Козлов, Александр Валерьевич; Никитин, Николай Вячеславович; Родин, Владислав Геннадьевич; Черёмхин, Павел Аркадьевич
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
Virtual camera-based analysis of photosensor characterization methods
(2022) Cheremkhin, P. A.; Evtikhiev, N. N.; Kozlov, A. V.; Krasnov, V. V.; Rodin, V. G.; Starikov, R. S.; Черёмхин, Павел Аркадьевич; Евтихиев, Николай Николаевич; Козлов, Александр Валерьевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич
Только метаданные
Estimation of the Efficiency of Digital Camera Photosensor Noise Measurement Through the Automatic Segmentation of Non-Uniform Target Methods and the Standard EMVA 1288
(2021) Evtikhiev, N. N.; Kozlov, A. V.; Krasnov, V. V.; Rodin, V. G.; Starikov, R. S.; Cheremkhin, P. A.; Евтихиев, Николай Николаевич; Козлов, Александр Валерьевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич; Черёмхин, Павел Аркадьевич
This paper discusses the problem of characterizing digital cameras and the determination of their noise characteristics, which is relevant for contemporary photographic equipment. The issues of limiting the accuracy of data obtained with digital cameras, related to the photosensor noise, are also highlighted. The European Machine Vision Association standard EMVA 1288 for measurement and presentation of specifications for machine vision sensors and cameras, and fast automatic segmentation of non-uniform target (ASNT) noise estimation methods are compared. The noise characteristics of the photosensors of the machine vision camera PixeLink PL-B781F, scientific camera Retiga R6, and amateur camera Canon EOS M100 are investigated. The accuracies of the measurement results and speed of calculation and the method implementation are also analyzed. The assessment of the temporal noise revealed that the ASNT method is not inferior in terms of accuracy compared to the standard method and can be implemented significantly faster, even with additional images taken into account for accuracy improvement.
Только метаданные
Influence of Spatial Losses of the Signal Detected by a Single-Pixel Detector on the Quality of Object Image Reconstruction
(2021) Kulakov, M. N.; Rodin, V. G.; Starikov, R. S.; Cheryomkhin, P. A.; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич; Черёмхин, Павел Аркадьевич
© 2021, Springer Science+Business Media, LLC, part of Springer Nature.The reconstruction methods, which are based on compressed sensing (CS), make it possible to record and reconstruct information basing on its sparse or compressed representation. In this work, we study resistance of CS-based single-pixel imaging to partial loss of the intensity of the recorded radiation from an object with a limited area of the detector. The problem was solved experimentally by implementing the so-called single-pixel camera, as well as detecting optical radiation from the object and reconstructing its image with the use of CS methods. The method resistance to spatial radiation losses is estimated as a function of the size and shape of the detector aperture. The quality of image reconstruction depending on the two following factors is assessed: the fraction of the intensity of the detected radiation and the quantity of single-pixel detections. The results can ensure significantly wider application of the method to reconstruct data, both detected in dynamic and scattering media (including the introduction of various apertures and Fourier filtering) and in the case of significant spatial radiation losses.
Только метаданные
Application of a Digital Micromirror Device for Optical Encryption with Time Integration
(2020) Evtikhiev, N. N.; Krasnov, V. V.; Molodtsov, D. Y.; Rodin, V. G.; Starikov, R. S.; Cheremkhin, P. A.; Евтихиев, Николай Николаевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич; Черёмхин, Павел Аркадьевич
© 2020, Allerton Press, Inc.Abstract: The possibility of using a digital micromirror device (DMD) for implementing the optical encryption with time integration in quasimonochromatic spatially incoherent light is considered. An experimental setup for optical registration of image to be encrypted on a digital camera is presented. Images containing text and graphic information are encrypted and successfully decrypted using inverse filtering. The use of time integration in optical encryption makes it possible to reduce the noise caused by binarization of holograms display on DMD that contains encryption keys and to increase the diffraction efficiency of the encryption process.
Только метаданные
Iterative Binarization of Digital Holograms Using Error Diffusion Method
(2020) Kurbatova, E. A.; Rodin, V. G.; Cheremkhin, P. A.; Родин, Владислав Геннадьевич; Черёмхин, Павел Аркадьевич
© 2020, Allerton Press, Inc.Abstract: Binarization of digital holograms is used for storage and on-line transfer of registered information and for optical reconstruction of images using binary digital micromirror devices. The capabilities of binarization of optically registered holograms by iterative methods with application of the error diffusion method either at each step of varied binarization threshold or only at the final iteration are considered. The variation of method parameters is analyzed and the quality of reconstructed images is compared with the quality of the binarized holograms. It is determined that the method with application of the error diffusion operation only at the final stage increases the quality of image reconstruction by 12% compared to the one-step methods.
Только метаданные
Measurement of Modulation of the Phase Liquid-Crystal Light Modulator Santec SLM-200 and Analysis of Its Applicability for the Reconstruction of Images from Diffraction Elements
(2021) Evtikhiev, N. N.; Krasnov, V. V.; Ryabcev, I. P.; Rodin, V. G.; Starikov, R. S.; Cheremkhin, P. A.; Евтихиев, Николай Николаевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич; Черёмхин, Павел Аркадьевич
© 2021, Springer Science+Business Media, LLC, part of Springer Nature.We consider the problem of achieving high stability and linearity of phase liquid-crystal space-time light modulators, which are widely used for optical reconstruction of diffractive optical elements, including holograms. Modern high-resolution space-time light modulators one uses a digital signal addressing circuit, which leads to phase shift fluctuations during the frame. For the modern high-resolution phase liquid crystal space-time light modulator Santec SLM-200, the dependences of the phase shift on the level of the addressed signal and time from the beginning of the frame have been measured. Using the Santec SLM-200 light modulator, optical reconstruction of images from diffractive elements of different types was performed, their diffraction efficiency and the quality of the reconstructed images were evaluated. The values of the diffraction efficiency were obtained in the range of 3–10%; a sharp drop in the brightness of the reconstructed images is observed with distance from the optical axis in the plane of reconstruction.
Только метаданные
3D-CGH-Net: Customizable 3D-hologram generation via deep learning
(2025) Rymov,D.A.; Svistunov,A.S.; Starikov,R.S.; Shifrina,A.V.; Rodin,V.G.; Evtikhiev,N.N.; Cheremkhin,P.A.; Рымов, Дмитрий Андреевич; Свистунов, Андрей Сергеевич; Стариков, Ростислав Сергеевич; Шифрина, Анна Владимировна; Родин, Владислав Геннадьевич; Евтихиев, Николай Николаевич; Черёмхин, Павел Аркадьевич
Только метаданные
DMD-based optical pattern recognition using holograms generated with the Hartley transform
(2023) Cheremkhin, P. A.; Krasnov, V. V.; Rodin, V. G.; Starikov, R. S.; Черёмхин, Павел Аркадьевич; Родин, Владислав Геннадьевич; Стариков, Ростислав Сергеевич