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Dynamic Range Compression of Infrared Images Based on Histogram Equalization with Edge Inversion 基于边缘反转直方图均衡化的红外图像动态范围压缩技术
Doklady BGUIR Pub Date : 2024-02-28 DOI: 10.35596/1729-7648-2024-22-1-108-115
С. И. Рудиков, В. Ю. Цветков, А. П. Шкадаревич, S. Rudikov, V. Tsviatkou, Alexey P. Shkadarevich
{"title":"Dynamic Range Compression of Infrared Images Based on Histogram Equalization with Edge Inversion","authors":"С. И. Рудиков, В. Ю. Цветков, А. П. Шкадаревич, S. Rudikov, V. Tsviatkou, Alexey P. Shkadarevich","doi":"10.35596/1729-7648-2024-22-1-108-115","DOIUrl":"https://doi.org/10.35596/1729-7648-2024-22-1-108-115","url":null,"abstract":"The problem of compression of the dynamic range of infrared images is considered. To improve the quality of tone mapping of infrared images when their dynamic range is compressed and to simplify the control over the reproduction characteristics of infrared images, a dynamic range conversion algorithm based on adaptive histogram equalization with edge inversion is proposed. The essence of the algorithm consists in double reduction of the dynamic range of the infrared image with intermediate stretching, compression and overlapping of edges with inversion. To select the brightness interval and the degree of its stretching, the proposed algorithm uses the asymmetry coefficient. The algorithm makes it possible to improve some global and interval indicators of image reproduction quality by superimposing the edges of the histogram.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140418529","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}
引用次数: 0
Precision RMS-to-DC Converter 精密 RMS 至 DC 转换器
Doklady BGUIR Pub Date : 2024-02-28 DOI: 10.35596/1729-7648-2024-22-1-30-38
Y. Galkin, O. Dvornikov, V. Tchekhovski
{"title":"Precision RMS-to-DC Converter","authors":"Y. Galkin, O. Dvornikov, V. Tchekhovski","doi":"10.35596/1729-7648-2024-22-1-30-38","DOIUrl":"https://doi.org/10.35596/1729-7648-2024-22-1-30-38","url":null,"abstract":"The developed model of a resistive-transistor thermoelectric converter, the technique for identifying its parameters and the results of circuit simulation using the proposed model of an RMS-DC converter are considered. The electrical circuit of the RMS-DC converter is given, the dependences of the conversion error on the input voltage level obtained by circuit modeling, on the basis of which the main requirements for reducing the error are formulated. The application of operational amplifiers of the OAmp11.2 type with input junction field-effect transistors, previously developed on the master slice array МН2ХА031, makes it possible to implement a precision RMS-DC converter in the form of a microassembly containing two crystals of the ПН001 thermoelectric converter, one МН2ХА031 crystal with a signal processing circuit and external filter capacitors. Circuit simulation showed that such a converter remains operational at an absorbed dose of gamma radiation equal to 1 Mrad and exposure to a neutron fluence of 1 ⋅ 1013 n/cm2 .","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"290 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420929","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}
引用次数: 0
Determination of the Direction to the Source of Radio Emission in a Radio Direction Finder with a Five-Element Ring Antenna Array and Total Difference Processing 利用五元环形天线阵列和全差处理确定无线电测向仪中无线电发射源的方向
Doklady BGUIR Pub Date : 2024-02-28 DOI: 10.35596/1729-7648-2024-22-1-64-73
Е. Н. Буйлов, А. С. Солонар, П. В. Бойкачев, И. А. Дубовик, И. Б. Кожабаева, Yauheni N. Builou, Andrey Solonar, P. Boykachev, I. Dubovik, I.B. Kozhabaeva
{"title":"Determination of the Direction to the Source of Radio Emission in a Radio Direction Finder with a Five-Element Ring Antenna Array and Total Difference Processing","authors":"Е. Н. Буйлов, А. С. Солонар, П. В. Бойкачев, И. А. Дубовик, И. Б. Кожабаева, Yauheni N. Builou, Andrey Solonar, P. Boykachev, I. Dubovik, I.B. Kozhabaeva","doi":"10.35596/1729-7648-2024-22-1-64-73","DOIUrl":"https://doi.org/10.35596/1729-7648-2024-22-1-64-73","url":null,"abstract":"One of the methods for measuring the direction of arrival of an electromagnetic wave from a radio source by an automatic direction finder with a small antenna base and a limited number of channels of the radio receiving path is proposed. The problems that arise during the implementation of this method are listed, and suggestions for their solution are presented. A block diagram has been obtained and a layout of a radio direction finder has been created, in which the processing device is implemented using a two-channel LimeSDR transceiver. The results of the radio direction finder test for detecting and evaluating the direction of an unmanned aerial vehicle are presented.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"10 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140422442","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}
引用次数: 0
Mathematical Model for Constructing a Map of the Location of Areas that Make Up the Background Environment for Optical-Electronic Systems 构建光电子系统背景环境区域位置图的数学模型
Doklady BGUIR Pub Date : 2024-02-28 DOI: 10.35596/1729-7648-2024-22-1-116-124
А. В. Сергеенко, А. Ю. Липлянин, А.В. Хижняк, Andrey V. Siarheyenka, A. Y. Liplianin, Alexander V. Khizhniak
{"title":"Mathematical Model for Constructing a Map of the Location of Areas that Make Up the Background Environment for Optical-Electronic Systems","authors":"А. В. Сергеенко, А. Ю. Липлянин, А.В. Хижняк, Andrey V. Siarheyenka, A. Y. Liplianin, Alexander V. Khizhniak","doi":"10.35596/1729-7648-2024-22-1-116-124","DOIUrl":"https://doi.org/10.35596/1729-7648-2024-22-1-116-124","url":null,"abstract":"A developed mathematical model is presented for constructing a map of the location of areas that make up the background environment for optical-electronic systems. A feature of the proposed model is that when determining which class a particular pixel belongs to, the class values of neighboring pixels, as well as the spatial position of the pixel, are simultaneously taken into account. Quantitative assessments of the adequacy of this model and existing mathematical image models capable of constructing maps of the location of areas are given. The proposed model was compared with the Markov model, block Markov model, Gibbs model, block Gibbs model and doubly stochastic model with level quantization. Adequacy assessment was carried out using an artificial neural network developed by the authors, which evaluates the similarity of two images using a normalized similarity index ranging from 0.0 to 1.0, and its k-fold cross-validation. The comparison results showed that the developed model, according to the calculated indicator, is at least three times better than the known ones.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"85 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140418052","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}
引用次数: 0
Adaptation of Dual Contouring and Marching Cubes Algorithms for 3D Reconstruction of the Human Lumbar Spine 适应人体腰椎三维重建的双轮廓和行进立方算法
Doklady BGUIR Pub Date : 2024-01-05 DOI: 10.35596/1729-7648-2023-21-6-99-105
K. S. Kurochka, T. S. Semenchenya
{"title":"Adaptation of Dual Contouring and Marching Cubes Algorithms for 3D Reconstruction of the Human Lumbar Spine","authors":"K. S. Kurochka, T. S. Semenchenya","doi":"10.35596/1729-7648-2023-21-6-99-105","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-6-99-105","url":null,"abstract":"The article deals with the problem of three-dimensional reconstruction of the human lumbar spine using the Marching Cubes and Dual Contouring surface triangulation algorithms for subsequent planning of a surgical intervention based on the analysis of digital computed tomography images. 3D reconstructions of the human lumbar spine are presented, as well as the results of a comparative analysis of the developed methods according to the following criteria: mesh generation speed; the number of generated cells; the absence of conflict situations (intersections of the surface). The optimal algorithm for solving the problem is determined on the basis of a comparative analysis.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"60 S278","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139629916","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}
引用次数: 0
Optical, Mechanical and Electrical Characteristics of Thermal Uncooled Bolometric Type Detector Based on Vanadium Oxide 基于氧化钒的热不冷却计量型探测器的光学、机械和电气特性
Doklady BGUIR Pub Date : 2024-01-05 DOI: 10.35596/1729-7648-2023-21-6-84-91
Van Trieu Tran, K. Korsak, P. E. Novikov, I. Lovshenko, S. Zavadski, D. Golosov, A. A. Stepanov, A. А. Hubarevich, V. Kolos, Ya. A. Solovjov, D. S. Liauchuk, V. R. Stempitsky
{"title":"Optical, Mechanical and Electrical Characteristics of Thermal Uncooled Bolometric Type Detector Based on Vanadium Oxide","authors":"Van Trieu Tran, K. Korsak, P. E. Novikov, I. Lovshenko, S. Zavadski, D. Golosov, A. A. Stepanov, A. А. Hubarevich, V. Kolos, Ya. A. Solovjov, D. S. Liauchuk, V. R. Stempitsky","doi":"10.35596/1729-7648-2023-21-6-84-91","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-6-84-91","url":null,"abstract":"Determination of optical, mechanical and electrical characteristics is one of the decisive factors in the design of instrumentation structures of thermal uncooled bolometer-type detectors (microbolometers). The paper presents the results of optimization calculations by means of computer simulation of absorption, transmittance and reflection spectra of device structures of microbolometers based on thermosensitive vanadium oxide film by finite-difference time-domain method (FDTD). The characteristics of the investigated microbolometer structure were checked for compliance with mechanical and electrical requirements for this class of devices.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"23 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139536016","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}
引用次数: 0
A Method for Searching for Defective Solar Panels in Telemetry Data of a Power Plant Based on the Results of a Digital Twin 基于数字孪生结果的发电厂遥测数据中缺陷太阳能电池板搜索方法
Doklady BGUIR Pub Date : 2024-01-05 DOI: 10.35596/1729-7648-2023-21-6-113-120
K. S. Dzik
{"title":"A Method for Searching for Defective Solar Panels in Telemetry Data of a Power Plant Based on the Results of a Digital Twin","authors":"K. S. Dzik","doi":"10.35596/1729-7648-2023-21-6-113-120","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-6-113-120","url":null,"abstract":"Searching for faulty, and therefore operating in abnormal mode, solar panels at a power plant is an urgent task in the context of the development and growth of the share of solar energy in electricity generation. The research is aimed at developing and evaluating the effectiveness of a new methodology and software algorithm for searching for anomalies in the operation of solar panels based on the results of a digital twin created and trained using telemetry data from a solar power plant. The methodology is based on studies of deviations in power values at the point of maximum efficient operation of the solar panel, calculated by the digital twin, from the average statistical values for the power plant. Using the proposed methodology, over six months of direct observations, 16 anomalies in the operation of the solar panels of the power plant were discovered and confirmed. It has been established that when analyzing deviations of normalized power values at the maximum power point PN, it is possible to detect solar panels that have defects or operate with loss of efficiency.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"14 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139536172","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}
引用次数: 0
Methodology for Assessing Lung Volumes Based on Recording the Biomechanics of Respiratory Movements 基于呼吸运动生物力学记录的肺容积评估方法
Doklady BGUIR Pub Date : 2024-01-05 DOI: 10.35596/1729-7648-2023-21-6-92-98
I. I. Revinskaya, P. V. Kamlach
{"title":"Methodology for Assessing Lung Volumes Based on Recording the Biomechanics of Respiratory Movements","authors":"I. I. Revinskaya, P. V. Kamlach","doi":"10.35596/1729-7648-2023-21-6-92-98","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-6-92-98","url":null,"abstract":"The method for studying the biomechanics of breathing has been developed to determine the volume of inhaled and exhaled air. The technique is based on recording the movements of the walls of the chest and abdomen of a person during breathing. A video camera was used to record movements of the chest and abdominal walls, with a spirometer used as the reference method for measuring lung volumes. According to the proposed technique, studies were conducted among 63 people (age – 18–26 years, body mass index ranged from 18.1–32.6 kg/m2, height – 160–192 cm). Statistical processing of the results showed a strong relationship between the measured volu mes and the relative deviations of the walls of the human chest and abdomen. The developed technique for studying the biomechanics of breathing can be used for indirect assessment of lung volumes.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"88 S374","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139629750","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}
引用次数: 0
Using Machine Learning for Recognition of Alzheimer’s Disease Based on Transcription Information 根据转录信息利用机器学习识别阿尔茨海默病
Doklady BGUIR Pub Date : 2024-01-05 DOI: 10.35596/1729-7648-2023-21-6-106-112
U. A. Vishniakou, ChuYue Yu
{"title":"Using Machine Learning for Recognition of Alzheimer’s Disease Based on Transcription Information","authors":"U. A. Vishniakou, ChuYue Yu","doi":"10.35596/1729-7648-2023-21-6-106-112","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-6-106-112","url":null,"abstract":"The purpose of this article is to perform analytical and prognostic studies on the recognition of Alzhei mer’s disease based on decoded text speech data using machine learning algorithms. The data used in this article is taken from the ADReSS 2020 Challenge program, which contains speech data from patients with Alzhei mer’s disease and healthy people. The problem under study is a binary classification problem. First, the full texts of the interviewees were extracted from the transcribed texts of the speech data. This was followed by training the model based on vectorized text features using a random forest classifier, in which the authors used the GridSearchCV method to optimize hyperparameters. The classification accuracy of the model reached 85.2 %.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"24 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535710","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}
引用次数: 0
A Method for Calculating of the Efficiency of Communication Systems with Multiple Modulation Types and Multi-Stage Composite Coding 计算采用多种调制类型和多级复合编码的通信系统效率的方法
Doklady BGUIR Pub Date : 2024-01-04 DOI: 10.35596/1729-7648-2023-21-6-45-52
E. Lipkovich, V. V. Rabtsevich
{"title":"A Method for Calculating of the Efficiency of Communication Systems with Multiple Modulation Types and Multi-Stage Composite Coding","authors":"E. Lipkovich, V. V. Rabtsevich","doi":"10.35596/1729-7648-2023-21-6-45-52","DOIUrl":"https://doi.org/10.35596/1729-7648-2023-21-6-45-52","url":null,"abstract":"Analytical relations and a methodology for calculating the performance indicators of communication and multimedia broadcasting systems using multi-position modulation types (QAM-M, FM-M, FM-M, CHMS-M, AM-M, OFM-M) and multi-stage coding based on non-systematic convolutional codes and non-binary block Reed-Solomon codes are proposed. The relations obtained are common for studies of noise immunity, corrective capacity, energy and information efficiency of systems, depending on the requirements for reception reliability, modulation format, type of codes used and their parameters. The calculation of the characteristics of systems with cascade composite coding is carried out in a closed form and does not require the use of complex computer simulation procedures.","PeriodicalId":122672,"journal":{"name":"Doklady BGUIR","volume":"19 S33","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139630220","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}
引用次数: 0
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