Scientific Visualization最新文献

{"title":"Visualization Elements in the Examination of Dangerous Production Facilities using an Unmanned Aircraft","authors":"A.E. Kozlova, M. Narkevich, O. Logunova, K.E. Shakhmayeva","doi":"10.26583/sv.15.2.10","DOIUrl":"https://doi.org/10.26583/sv.15.2.10","url":null,"abstract":"The paper considers the possibility of using visualization when preparing a task for frontal surface examination of hazardous industrial facilities using unmanned aerial vehicles. The research is based on the results of an experimental survey of buildings and structures of a large metallurgical enterprise in Russia. As initial data, photographs of buildings and structures obtained using a camera of an unmanned aerial vehicle and their drawings were used. When building a 3D model, the capabilities of Autodesk AutoCAD and Autodesk Revit were used. When building a 2D information model, a combination of a 3D model and a photograph of the object was used. The resulting 3D and 2D models are included in the structure of the flight chart as part of an applied digital platform in an automated decision-making system for expert assessment of the technical condition compliance of a hazardous production facility with regulatory requirements. Violation of regulatory requirements entails the occurrence of emergencies and incidents at an industrial enterprise. Visualization elements allow increasing the reliability of information entering the database of expert information.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45171776","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":"Computer Simulation and Visualization of Wheel Tracks on Solid Surfaces in Virtual Environment","authors":"A. V. Maltsev","doi":"10.26583/sv.15.2.07","DOIUrl":"https://doi.org/10.26583/sv.15.2.07","url":null,"abstract":"The paper describes methods and approaches for implementation of traces from virtual prototypes of wheeled technical vehicles on solid objects in three-dimensional virtual scenes. Use of particle systems hierarchically linked to wheel models is the basis of solutions developed. Original type of particle system is proposed, in which generation of elements is regulated by special control signal. Creation, processing, storage and destruction of particles is performed by means of the CUDA architecture with use of computing cores of modern graphics processor and video memory resources. Creating geometric model of each particle and its rendering is carried out on programmable graphics pipeline with own vertex, geometry and fragment shaders. Visualization of virtual environment with simulation of wheel tracks is performed in real time. Software modules were created based on developed methods and approaches. Approbation of them was carried out in virtual environment system VirSim and showed adequacy and effectiveness of proposed solutions for simulation of wheel tracks in virtual environment systems and training complexes.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45807724","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":"Integrated Use of Various Software Environments for Increasing the Level of Visualization and Perception of Information","authors":"V. Nemtinov, A.A. Podina, A. Borisenko, Vyacheslav Vladimirovich Morozov, Yu. V. Protasova, K. Nemtinov","doi":"10.26583/sv.15.2.01","DOIUrl":"https://doi.org/10.26583/sv.15.2.01","url":null,"abstract":"Implementation of various software tools in the educational process affects formation of students’ professional competencies. This influence should be taken into account in scientific and methodological support of the modern education system. The purpose of the article is to develop a technology for creating educational VR content that provides immersion into a virtual thematic space using a variety of different software environments and improves the effectiveness of teaching. In this article, the technology of creating an electronic course using a complex of specialized software tools is considered. The initial stage of such technology is to develop a course description that includes data and knowledge about the object or phenomenon under study. Three-dimensional models of virtual objects created in SketchUp, Blender. Solidworks, Compass-3D, etc. are used for technical objects. Then 3D models of objects and landscape are used for creating a virtual space in the Twinmotion software package. Then photorealistic panoramas, images and videos are imported from Twinmotion into 3DVista Virtual Tour Pro to create a virtual tour. At the final stage, the virtual tour is integrated into the LMS Moodle learning management system. The implementation of the technology of integrated use of specialized software tools was tested in the creation of educational content that provides immersion into a virtual thematic space on the example of the course \"History of the Tambov Region\", which is included in many educational programs at Tambov educational institutions. High efficiency of developed educational content is confirmed by the survey results of several groups of students and its further analysis using Importance-Performance Analysis (IPA) methodology; as well as by checking learning achievements based on testing two groups of students of 12 people each. The first test group studied the discipline using the proposed electronic content, and the second one without it. The test results showed that the proportion of correct answers to test questions in the first group was 17% higher than for the students of the second group. Thus, the authors proposed the technology for development of educational content, which includes a number of specialized software tools, as well as the organization of the educational process using innovative educational means. Moreover, the use of the proposed technology allows students to develop teamwork and interpersonal communication skills by interactive lectures and group discussions.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43037322","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":"Application of Visualization Tools for Optimization Problems of the Transport Model","authors":"R.B. Adaev, O. A. Vetrova","doi":"10.26583/sv.15.2.03","DOIUrl":"https://doi.org/10.26583/sv.15.2.03","url":null,"abstract":"The article discusses the combination of problems of transport system simulation and the visualization of the results of the optimization experiment. Simulation is widely used in logistics and supply chains, healthcare, transport, warehouse and transportation management, finance, business processes, service systems, railways, strategic planning and management. The paper discusses the solution to the optimisation problem for management of the intersection of roads of the megalopolis transport network taking advantage of one of the AnyLogic simulation tools. The AnyLogic development environment uses an object-oriented approach that helps in the organization and presentation of complex systems. Built-in animation tools make it easy to visualize the simulation model, as well as interpretation of the behavior of complex systems. The manuscript describes the visualization of the construction of an intersection and solving the problem of calculating the optimal duration of traffic light phases using an optimization experiment.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43199632","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":"Scientific Visualization for Interrogation of Results in Lighting Simulation System","authors":"E. Biryukov, B. Barladian, E. Denisov, A. Voloboy","doi":"10.26583/sv.15.2.08","DOIUrl":"https://doi.org/10.26583/sv.15.2.08","url":null,"abstract":"Lighting modeling software packages often include a tool for processing and investigation of two-dimensional images that are the results of modeling. Functionality of these tools is usually minimal one and often consists of mapping of resultant images into monitor screen only. There are general image viewers and image processing programs. But in practice they either do not contain required functionality, or are so superfluous that result postprocessing becomes inconvenient with them. Therefore we had to implement own viewer that processes high dynamic range images generated by the lighting simulation and realistic computer graphics system as well as visualizes supplementary simulation information needed for engineer analysis. Lighting simulation module transfers to our viewer the generated image in physical values together with supplementary data. These data has per pixel nature and form additional layers of images. Our image processing module provides brightness high dynamic range compression for rendering of images generated with lighting modeling methods including stochastic ones, analysis of the image generation algorithms using additional data layers, applying additional visual effects for improving images appearance, and export of processed images to commonly used formats.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45084015","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":"Investigation of the Properties of First Nearest Neighbors’ Graphs","authors":"A.A. Kislitsyn A.A., Y. Orlov, M. V. Goguev","doi":"10.26583/sv.15.1.02","DOIUrl":"https://doi.org/10.26583/sv.15.1.02","url":null,"abstract":"In this study we present a benchmark of statistical distributions of the first nearest neighbors in random graphs. We consider distribution of such graphs by the number of disconnected fragments, fragments by the number of involved nodes, and nodes by their degrees. The statements about the asymptotic properties of these distributions for graphs of large dimension are proved. The problem under investigation is to estimate the probability of realization of a certain structure of the first nearest neighbors graph depending on the distribution function of distances between the elements of the studied set. It is shown that, up to isomorphism, the graph of the first nearest neighbors does not depend on the distance distribution. This fact makes it possible to conduct numerical experiments on the construction of basic statistics based on a uniform distribution of distances and obtain tabulated data as a result of numerical modeling. We also discuss the approximation of the distribution of graph vertices by degrees, which allows us to estimate the proportion of randomness for a particular structure resulting from clustering elements of a certain set by the nearest neighbor method. The asymptotic analysis of the fragment distribution is discussed.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42588224","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":"Computer and Physical Modeling for the Estimation of the Possibility of Application of Convolutional Neural Networks in Close-Range Photogrammetry","authors":"V. Pinchukov, A. Poroykov, E. Shmatko, N. Sivov","doi":"10.26583/sv.15.1.06","DOIUrl":"https://doi.org/10.26583/sv.15.1.06","url":null,"abstract":"Close-range photogrammetry is widely used to measure the surface shape of various objects and its deformations. The classic approach for this is to use a stereo pair of images, which are captured from different angles using two digital video cameras. The surface shape is measured by triangulating a set of corresponding two-dimensional points from these images using a predetermined location of cameras relative to each other. Various algorithms are used to find these points. Several photogrammetry methods use cross-correlation for this purpose. This paper discusses the possibility of replacing the correlation algorithm with neural networks to determine displacements of small areas in the images. They allow increasing the calculation speed and the spatial resolution of the measurement results. To verify the possibility of using convolutional networks for photogrammetry tasks, computer and physical modeling were carried out. For the first test, a set of synthetically generated images representing images of the Particle Image Velocimetry method was used. The displacements of particles in the images are known, it allows to estimate the accuracy of processing of such images. For the second test, a series of experimental images with surfaces with different deformation was obtained. Computational experiments were performed to process synthetic and experimental images using selected neural networks and a classical cross-correlation algorithm. The limitations on the use of the compared algorithms were determined and their error in reconstructing the three-dimensional shape of the surface was evaluated. Computer and physical modeling have shown the operability and efficiency of neural networks for processing photogrammetry images.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45753788","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":"Visualization of Geometric Models of Faceted Solids in Point Calculus","authors":"E. Konopatskiy, K. Ryabinin, A. Bezditnyi","doi":"10.26583/sv.15.1.05","DOIUrl":"https://doi.org/10.26583/sv.15.1.05","url":null,"abstract":"The paper considers the case of faceted solids and discusses visualisation of geometric solids in the form of a three-parameter set of points which belongs to a three-dimensional space. To visualize geometric solids, taking advantage of the modern GPU hardware acceleration, the Ray marching method is used. The implementation considers the definition of a signed distance function, which is reduced to the task of determining the set of intersection points of the projection rays with the rendered geometric solid. After that, for each pixel of the screen, its color is determined in accordance with whether the ray passes through the geometric solid or not. The analytical description of geometric solids and the solution of their intersection problem with projecting rays are solved within the framework of the point calculus mathematical apparatus. As a result, it was concluded that the proposed approach justifies itself, providing high rendering performance and the complete absence of visual artifacts when rendering faceted solids.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43839256","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":"Intravital Imaging of Blood Cells Under Stress to Assess the Organism Condition","authors":"A. Deryugina, M. Ivashchenko, P. Ignatiev, V. Metelin, М.N. Talamanova","doi":"10.26583/sv.15.1.08","DOIUrl":"https://doi.org/10.26583/sv.15.1.08","url":null,"abstract":"Biological specimens are the most difficult to study as almost exclusively light elements are considered, a little visibility yielded and structures are sparsely distinguishable. In addition cell structures are easily damaged on any stage of microscopic exploration. The optimal solution is to study their phase changes using laser interference microscopy. The method is based on the analysis of refractive index of intracellular medium of cells with subsequent computer analysis and processing of phase images followed by three-dimensional reconstruction of the object. The obtained images are digitally recorded, and any point of view can be introduced for viewing. This work uses laser interference microscopy followed by 3D reconstruction of cell images to study blood cells: neutrophils and erythrocytes by 3D reconstruction of neutrophils have demonstrated changes of their functional activity under technological stress, while 3D reconstruction of erythrocytes revealed a violation of the normal discoidal cell shape. Interpretation of the obtained data indicates a restructuring of the cellular component of nonspecific resistance and deterioration of the oxygen transport function of erythrocytes under technological stress. Visualization of interference patterns of blood cells through 3D image processing allows obtaining n a vital analysis of cells, the technique that is not available for other methods of microscopy, in particular light microscopy, which is traditionally used as a prognostic method of the state of the body. This direction represents the most important condition for further development of works in the field of cell diagnostics. The obtained results prove the applicability of 3D reconstruction of cell images for bioscanning of technological stress.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44891304","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":"Visualization of Liquids Flows in Microfluidics and Plasma Channels in Nanosecond Spark Microdischarges by Means of Digital Microscopy","authors":"V. A. Dekhtyar, A. Dubinov","doi":"10.26583/sv.15.1.01","DOIUrl":"https://doi.org/10.26583/sv.15.1.01","url":null,"abstract":"An application of digital optical microscopes for visualization of single-pulse or pulsed-periodic processes in microfluidics and physics of spark microdischarges is studied. Multiple examples of coagulation processes of liquid microvolumes, nanosecond spark discharges near liquid drops and plant living tissues in a cell-size level are provided.","PeriodicalId":38328,"journal":{"name":"Scientific Visualization","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49063413","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}