Pub Date : 2022-05-12DOI: 10.52928/2070-1624-2022-38-4-32-37
A. Hodosevich, R. Bohush
A web-based system for monitoring and managing parking lots based on analysis of images from surveillance cameras is presented. An approach has been developed for segmentation of parking spaces, that allows you to automatically determine the coordinates of parking spaces in the image using the Otsu adaptive binarization algorithm and the Hough transform algorithm for linking lines. The classification of parking spaces by occupancy type is performed using the convolutional neural network ResNet50. The features of the implementation of the server part are given, the developed class diagram and their main purpose are described. The client part of the system is a website that can be accessed using a personal computer or mobile device. Examples for main software functionality are shown.
{"title":"CLIENT-SERVER SYSTEM FOR PARKING MANAGEMENT BASED ON VIDEO SURVEILLANCE DATA ANALYSIS","authors":"A. Hodosevich, R. Bohush","doi":"10.52928/2070-1624-2022-38-4-32-37","DOIUrl":"https://doi.org/10.52928/2070-1624-2022-38-4-32-37","url":null,"abstract":"A web-based system for monitoring and managing parking lots based on analysis of images from surveillance cameras is presented. An approach has been developed for segmentation of parking spaces, that allows you to automatically determine the coordinates of parking spaces in the image using the Otsu adaptive binarization algorithm and the Hough transform algorithm for linking lines. The classification of parking spaces by occupancy type is performed using the convolutional neural network ResNet50. The features of the implementation of the server part are given, the developed class diagram and their main purpose are described. The client part of the system is a website that can be accessed using a personal computer or mobile device. Examples for main software functionality are shown.","PeriodicalId":386243,"journal":{"name":"HERALD OF POLOTSK STATE UNIVERSITY. Series С FUNDAMENTAL SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126796726","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}
Pub Date : 2022-05-12DOI: 10.52928/2070-1624-2022-38-4-92-102
F. Lomovtsev
In the upper half-plane, the classical solution and correctness criterion of the Goursat problem for a linear inhomogeneous adjoint model telegraph equation with variable rate a(s,t) are found explicitly. An explicit formula is obtained for the classical solution of this Goursat problem, unique and stable with respect to the right hand side of the equation and Goursat data. This formula contains implicit characteristic functions of the equation. In the case of a homogeneous conjugate model telegraph equation, the classical solution of this Goursat problem is the Riemann function in all linear mixed (initial-boundary) problems for an inhomogeneous model telegraph equation with variable rate a(s,t). This Riemann function has been calculated by us. A correctness criterion according to Hadamard (necessary and sufficient conditions) of its unique and stable on the right-hand side of the equation and the Goursat data solvability is found. This criterion consists of smoothness requirements on the righthand side of the equation and two Goursat data. The smoothness requirements on the right side of the equation are the condition of continuity of the right-side and the corresponding integral smoothness conditions on the right side of the equation and on the Goursat data – their twice continuous differentiability in the upper half-plane.
{"title":"GOURSAT PROBLEM FOR THE ADJOINT MODEL TELEGRAPH EQUATION WITH THE RATE a(s, t) IN THE UPPER HALF-PLANE","authors":"F. Lomovtsev","doi":"10.52928/2070-1624-2022-38-4-92-102","DOIUrl":"https://doi.org/10.52928/2070-1624-2022-38-4-92-102","url":null,"abstract":"In the upper half-plane, the classical solution and correctness criterion of the Goursat problem for a linear inhomogeneous adjoint model telegraph equation with variable rate a(s,t) are found explicitly. An explicit formula is obtained for the classical solution of this Goursat problem, unique and stable with respect to the right hand side of the equation and Goursat data. This formula contains implicit characteristic functions of the equation. In the case of a homogeneous conjugate model telegraph equation, the classical solution of this Goursat problem is the Riemann function in all linear mixed (initial-boundary) problems for an inhomogeneous model telegraph equation with variable rate a(s,t). This Riemann function has been calculated by us. A correctness criterion according to Hadamard (necessary and sufficient conditions) of its unique and stable on the right-hand side of the equation and the Goursat data solvability is found. This criterion consists of smoothness requirements on the righthand side of the equation and two Goursat data. The smoothness requirements on the right side of the equation are the condition of continuity of the right-side and the corresponding integral smoothness conditions on the right side of the equation and on the Goursat data – their twice continuous differentiability in the upper half-plane.","PeriodicalId":386243,"journal":{"name":"HERALD OF POLOTSK STATE UNIVERSITY. Series С FUNDAMENTAL SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116928850","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}
Pub Date : 2022-05-12DOI: 10.52928/2070-1624-2022-38-4-43-48
V. Bogush, V. Rodionova, O. Tanana
An electrodynamic simulation of a device for coupling a cavity resonator with a path is performed. The cavity coupling device is a distributed communication line, i.e. associated with both the magnetic and electric fields of the resonator, and makes it possible to obtain a coupling that depends little on the frequency. An algorithm for approximating the values of the input impedance from the resistance of the coupling element has been developed in order to calculate the set of characteristics of the loaded resonator. The performed calculations and the obtained dependences make it possible to determine the geometrical parameters of the design of a broadband cavity resonator coupling device in the microwave range of wavelengths.
{"title":"SIMULATION OF PARAMETERS OF A COUPLING DEVICE \u0000OF A MEASURING RESONATOR WITH A MICROWAVE PATH","authors":"V. Bogush, V. Rodionova, O. Tanana","doi":"10.52928/2070-1624-2022-38-4-43-48","DOIUrl":"https://doi.org/10.52928/2070-1624-2022-38-4-43-48","url":null,"abstract":"An electrodynamic simulation of a device for coupling a cavity resonator with a path is performed. The cavity coupling device is a distributed communication line, i.e. associated with both the magnetic and electric fields of the resonator, and makes it possible to obtain a coupling that depends little on the frequency. An algorithm for approximating the values of the input impedance from the resistance of the coupling element has been developed in order to calculate the set of characteristics of the loaded resonator. The performed calculations and the obtained dependences make it possible to determine the geometrical parameters of the design of a broadband cavity resonator coupling device in the microwave range of wavelengths.","PeriodicalId":386243,"journal":{"name":"HERALD OF POLOTSK STATE UNIVERSITY. Series С FUNDAMENTAL SCIENCES","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122307065","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}