{"title":"Methods of Anomalous Data Detection in Datasets","authors":"Akbar Soliev, Akmal Akhatov, Akbar Rashidov","doi":"10.3103/S1060992X25603045","DOIUrl":"10.3103/S1060992X25603045","url":null,"abstract":"<p>It is known that the accuracy of data analysis and artificial intelligence models that trained and tuned on the basis of data is closely related to the quality of the data set. The quality of the data set depends on several factors, one of the most important of which is the absence or elimination of anomalous data in the data set. Anomalous data has such a property that artificial intelligence models work normally with a data set with this anomalous data. That is, artificial intelligence models do not notice at all that they are working with incorrect data. As a result, the artificial intelligence model returns an incorrect result, which may lead to incorrect conclusions about the object. Therefore, today, the detection of anomalous data in the datasets is one of the studies that has retained its relevance. This research paper discusses anomalous data, their negative consequences, and the types of anomalies in the data set. It also studies methods for detecting anomalous data in datasets and analyzes their use cases.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S514 - S521"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. A. Sharin, K. E. Vorobyev, T. D. Kazarkin, L. A. Taskina
{"title":"Modeling the Behavior of a Flock of Birds to Generate Synthetic Data in Unreal Engine 5","authors":"D. A. Sharin, K. E. Vorobyev, T. D. Kazarkin, L. A. Taskina","doi":"10.3103/S1060992X25700274","DOIUrl":"10.3103/S1060992X25700274","url":null,"abstract":"<p>The paper proposes a system for modeling the collective behavior of flocks of birds to generate synthetic data in Unreal Engine 5. The system provides flexible adjustment of flock dynamics parameters, including species, speed and flight radius, as well as simulation of complex interactions in a virtual environment. Automated data markup is performed in YOLO (You Only Look Once) formats and with the preservation of spatial metadata of objects. A comparative analysis of the influence of the proportion of synthetic data in training samples on the quality of detection of computer vision models using the example of YOLOv11 is carried out. The results showed that the inclusion of up to 60 to 80 percent of synthetically generated data in the training dataset allows achieving an optimal balance between the accuracy of the model and the cost of collecting real data. The experiments showed that combining real and synthetic data significantly improves detection quality. For example, with 20% real and 80% synthetic data the YOLO v11 model achieved mAP@0.5 = 0.7157, Precision = 0.8157, and Recall = 0.6396, which substantially exceeds the results obtained when training only on real images. The developed system opens up prospects for application in the tasks of airspace monitoring, environmental research and virtual reality.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S457 - S464"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Determination of Optical Vortex Superposition Characteristics Using Artificial Intelligence Technologies","authors":"D. O. Shilov, E. S. Kozlova","doi":"10.3103/S1060992X25602878","DOIUrl":"10.3103/S1060992X25602878","url":null,"abstract":"<p>This work is devoted to the study of the classification accuracy of optical vortex superposition parameters using convolutional neural networks. Much of the work is devoted to analyzing ways to improve classification accuracy. The paper presents the results of experiments on training convolutional neural networks on different training and test datasets. The fact of a significant advantage of using one neural network architecture over another in the context of the problem being solved has been established.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S465 - S477"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Metasurfaces and Prospects for the Development of Information Optics","authors":"N. L. Kazanskiy, S. N. Khonina","doi":"10.3103/S1060992X25602180","DOIUrl":"10.3103/S1060992X25602180","url":null,"abstract":"<p>Metasurfaces provide a new step in the development of information optics, which continues the stage of multifunctional transformations of light using ultra-thin elements. Unlike the traditional approach based on refractive and diffractive optical elements, metasurfaces use complex arrays of subwavelength structures to control the phase, amplitude and polarization of incident light waves. Metasurfaces are a logical development of elements of diffractive optics, opening up new unique possibilities for light control while simultaneously increasing versatility and multifunctionality, which ensures the formation of new areas of application of photonics, including information optics. This review presents the main applications of metasurfaces in terms of expanding the capabilities of information optics and discusses the problems and prospects for the development of metasurfaces, including those based on tunable devices and using artificial intelligence methods.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S410 - S428"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. I. Khalilov, M. V. Bretsko, S. I. Yakubov, D. V. Maksimov, Ya. E. Akimova
{"title":"Measurement of Orbital Stokes Parameters of Structured Beams in Critical Planes of a First-Order Optical System","authors":"S. I. Khalilov, M. V. Bretsko, S. I. Yakubov, D. V. Maksimov, Ya. E. Akimova","doi":"10.3103/S1060992X25602325","DOIUrl":"10.3103/S1060992X25602325","url":null,"abstract":"<p>In this work, we theoretically and experimentally demonstrate a method for measuring the orbital Stokes parameters of structured Laguerre–Gaussian beams in the critical planes formed in a first-order optical system consisting of a cylindrical and a spherical lens. The positions of the critical planes are determined by the condition of equality of the beam radii in the <i>x</i>- and <i>y</i>-directions at the Rayleigh length <span>({{z}_{0}} = 2{{f}_{{CL}}})</span>. These planes are characterized by specific values of the Gouy phase difference <span>({{Gamma }_{{xy}}})</span>: in the first critical plane it equals <span>(Gamma _{{xy}}^{{left( 1 right)}} = pi {text{/}}2)</span>, while in the second it takes discrete values <span>(Gamma _{{xy}}^{{left( 2 right)}} = 2pi n,,,n = 0,1,2, ldots ~)</span>. By employing the reciprocity effect between the transverse intensity moment <span>({{W}_{{xy}}})</span> and the orbital angular momentum <span>({{ell }_{z}})</span>, related through <span>({{ell }_{z}})</span> = 4<i>W</i><sub><i>xy</i></sub>, we carried out the measurement of the third orbital Stokes parameter. Owing to the self-healing effect in this system, it was shown that a structured Laguerre–Gaussian beam is reconstructed in the second critical plane, while its astigmatic analogue is formed in the first. For an astigmatic structured Laguerre–Gaussian beam, the situation is reversed: reconstruction occurs in the first critical plane, and its astigmatic analogue appears in the second. This behavior ensures the applicability of the method to both structured Laguerre–Gaussian beams and their astigmatic modifications. The experimental results demonstrate good agreement with numerical modeling with a measurement error not exceeding four percent. It is also shown that structured Laguerre–Gaussian beams can be mapped onto the orbital Poincaré sphere, which opens up prospects for their practical use.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S392 - S401"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Mingazov, D. Soshnikov, L. Doskolovich, D. Bykov, E. Bezus, N. Kazanskiy
{"title":"Hybrid Design of Diffractive Optical Elements Using the Supporting Quadric Method","authors":"A. Mingazov, D. Soshnikov, L. Doskolovich, D. Bykov, E. Bezus, N. Kazanskiy","doi":"10.3103/S1060992X25602404","DOIUrl":"10.3103/S1060992X25602404","url":null,"abstract":"<p>We consider the calculation of a diffractive optical element (DOE) generating a required intensity distribution in a given plane. For the calculation, we propose a version of the supporting quadric method widely used in similar geometrical optics problems. The method is based on minimizing the root-mean-square error in a certain class of functions using a gradient method and leads to a DOE with a quasi-regular surface relief. We derive explicit expressions for the gradient and Hessian of the root-mean-square error, which makes it possible to efficiently apply the gradient method and provides the theoretical basis for using the methods of the second order. The obtained theoretical results are illustrated by a DOE design example.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S556 - S568"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Human Action Recognition from Motion Capture Data Using Machine Learning Techniques","authors":"V. Konovalov, A. Borisov, E. Myasnikov","doi":"10.3103/S1060992X25602593","DOIUrl":"10.3103/S1060992X25602593","url":null,"abstract":"<p>Human action analysis is an actively developing area of research. A successful solution to the problem of action analysis can contribute to a number of tasks in various areas of human activity, such as diagnostics in medicine, maintaining public safety, developing human-machine interfaces, training, etc. In this paper, we solve the problem of recognizing human actions based on motion capture data obtained using special means of recording human movements. This allows us to analyze motion based only on information about the position of the controlled parts of a human body on which the sensors are attached. To recognize actions, we use a classical pattern recognition scheme consisting of feature extraction and classification stages. At first, we preprocess initial motion data and generate feature descriptions in a reduced space. Then we use classical machine learning methods to classify extracted features with the subsequent aggregation using simple voting. In our experiments, we use the Berkeley Multimodal Human Action Database as the initial data and achieve a recognition accuracy of 91.6%, which is more than 10% better than the baseline technique.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S402 - S409"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. V. Volyar, M. V. Bretsko, S. I. Khalilov, D. V. Maksimov
{"title":"Dynamics of the OAM in Stable Generalized Structured Laguerre-Gaussian and Rotated Polygon Beams in the Astigmatic Optical System","authors":"A. V. Volyar, M. V. Bretsko, S. I. Khalilov, D. V. Maksimov","doi":"10.3103/S1060992X25602313","DOIUrl":"10.3103/S1060992X25602313","url":null,"abstract":"<p>We have theoretically and experimentally considered the four-parameter generalized structured beam, which can be either in the initial state of a Laguerre-Gaussian beam or a Hermite-Gaussian beam, or in both states simultaneously. In astigmatic transformations, these states can alternate with orbital angular momentum reaching double the radial number with a single topological charge. The astigmatic transformations of a spiral triangular beam containing a composition of higher-order Laguerre-Gaussian modes were also analyzed. We found that such dramatic transformations are controlled by the astigmatic Gouy phase. Moreover, it was revealed that the invariant of such astigmatic transformations is the sum of the squares of the orbital angular momentum and the cross-intensity moment, representing the total orbital angular momentum equal to the square of the initial OAM.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S543 - S555"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Rymzhina, Prachi Sharma, V. Platonov, V. Podlipnov, V. Pavelyev, Nishant Tripathi
{"title":"Impact of TiS3 Integration on Porous Silicon Photodetector Performance","authors":"A. Rymzhina, Prachi Sharma, V. Platonov, V. Podlipnov, V. Pavelyev, Nishant Tripathi","doi":"10.3103/S1060992X25602805","DOIUrl":"10.3103/S1060992X25602805","url":null,"abstract":"<p>The paper presents a comparison study results on the heterostructure between TiS<sub>3</sub> and Porous Silicon with pure Porous Silicon optoelectronic properties for photonics applications. To do this, titanium trisulfide, Porous Silicon and a heterostructure between them were synthesized and investigated. The TiS<sub>3</sub>/P–Si heterostructure-based photodetector demonstrated a significant performance enhancement over the pure P–Si device. Key results include an 8 to 10 fold increase in photoresponsivity (reaching up to ~190 A/W at 2 V bias, wavelength of 632.8 nm and 0.3 mW/cm<sup>2</sup> light power density), quantum efficiency (exceeding 37%), and detectivity (up to 2.26 × 10<sup>10</sup> Jones). Furthermore, the heterostructure exhibited a much faster response time of 0.015 s compared to 0.169 s for the pure P–Si device. The results demonstrate the relevance of using heterostructures for the development of new generation photodetectors.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S504 - S513"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. V. Sokolenko, N. V. Shostka, D. A. Poletaev, V. V. Skakun, M. D. Babin, A. O. Titova, Yu. A. Egorov
{"title":"Numerical Modeling of Singular Beam Evolution Diffracted on Surface Periodic Inhomogeneities","authors":"B. V. Sokolenko, N. V. Shostka, D. A. Poletaev, V. V. Skakun, M. D. Babin, A. O. Titova, Yu. A. Egorov","doi":"10.3103/S1060992X25601903","DOIUrl":"10.3103/S1060992X25601903","url":null,"abstract":"<p>In this paper, we used a numerical model to study the diffraction of scalar beams reflected from surfaces with rectangular periodic relief. We qualitatively analyzed the evolution of phase singularities in vortex beams with single and double topological charges. The influence of the relief depends on its height and position relative to the beam axis. It was shown that the magnitude of distortions in the initial beam increased when the ratio of the depression to the overhang became smaller than the radius of the singular beam on the surface of the specimen under study, whose relief height did not exceed one-quarter of the wavelength.</p>","PeriodicalId":721,"journal":{"name":"Optical Memory and Neural Networks","volume":"34 3","pages":"S485 - S492"},"PeriodicalIF":0.8,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}