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GraphiCon'2019 Proceedings. Volume 2最新文献

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Mathematical Modeling of the Contact Interaction of Two Nanobeams Timoshenko S.P. 两纳米梁接触相互作用的数学建模
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-71-73
В. А. Крысько, V. Krysko, Татьяна Яковлева, T. Yakovleva, Ольга Салтыкова, O. Saltykova, Вадим Кружилин, V. Kruzhilin
{"title":"Mathematical Modeling of the Contact Interaction of Two Nanobeams Timoshenko S.P.","authors":"В. А. Крысько, V. Krysko, Татьяна Яковлева, T. Yakovleva, Ольга Салтыкова, O. Saltykova, Вадим Кружилин, V. Kruzhilin","doi":"10.30987/graphicon-2019-2-71-73","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-71-73","url":null,"abstract":"The mathematical model of the contact interaction of two nanobeams obeying the kinematic hypothesis of the second approximation S.P. Timoshenko is constructed. There is a small gap between the nanobeams; an external alternating transverse load acts on the upper nanobeam. Nanobeams are isotropic, elastic, and they are connected through boundary conditions. Modified couple stress theory has been applied to describe the size-dependent effects of a beam nanostructure. Contact interaction is accounted for by the model B.Ya. Cantor. The paper studies the effect of the size-dependent coefficient. The system of differential equations is reduced to the Cauchy problem by the finite-difference method with an approximation of 0(h2) in the spatial coordinate. Further, the solution was carried out by the Runge-Kutta methods of the 4th order of accuracy in time. The convergence of numerical methods is investigated. The visualization of the results obtained by the methods of nonlinear dynamics and using wavelet transforms.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"156 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132173964","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
Automatic Choice of Denoising Parameter in Perona-Malik Model Perona-Malik模型去噪参数的自动选择
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-144-147
Андрей Насонов, A. Nasonov, Николай Мамаев, N. Mamaev, Ольга Володина, O. Volodina, А. Крылов, A. Krylov
{"title":"Automatic Choice of Denoising Parameter in Perona-Malik Model","authors":"Андрей Насонов, A. Nasonov, Николай Мамаев, N. Mamaev, Ольга Володина, O. Volodina, А. Крылов, A. Krylov","doi":"10.30987/graphicon-2019-2-144-147","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-144-147","url":null,"abstract":"In this work, we propose a no-reference method for automatic choice of the parameters of Perona-Malik image diffusion algorithm for the problem of image denoising. The idea of the approach it to analyze and quantify the presence of structures in the difference image between the noisy image and the processed image as the mutual information value. We apply the proposed method to photographic images and to retinal images with modeled Gaussian noise with different parameters and analyze the effects of no-reference parameter choice compared to the optimal results. The proposed algorithm shows the effectiveness of no-reference parameter choice for the problem of image denoising.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"17 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129468156","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: 1
Examination of the Nvidia RTX 检查Nvidia RTX
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-7-12
В. В. Санжаров, V. Sanzharov, Алексей Горбоносов, Alexey Gorbonosov, В.А. Фролов, V. Frolov, Алексей Волобой, A. Voloboy
{"title":"Examination of the Nvidia RTX","authors":"В. В. Санжаров, V. Sanzharov, Алексей Горбоносов, Alexey Gorbonosov, В.А. Фролов, V. Frolov, Алексей Волобой, A. Voloboy","doi":"10.30987/graphicon-2019-2-7-12","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-7-12","url":null,"abstract":"Hardware acceleration of ray tracing is an active research field, but only with the release of Nvidia Turing architecture GPUs it became widely available. Nvidia RTX is a proprietary hardware ray tracing acceleration technology available in Vulkan and DirectX APIs as well as through Nvidia OptiX. Since the implementation details are unknown to the public, there are a lot of questions about what it actually does under the hood. To find answers to these questions, we implemented classic path tracing algorithm using RTX via both DirectX and Vulkan and conducted several experiments with it to investigate the inner workings of this technology. We tested actual hardware implementation of RTX technology on RTX2070 GPU and the software fallback in the driver on GTX1070 GPU. In this paper we present results of these experiments and speculate on the internal architecture of RTX.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128719564","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: 20
3D-document and Digital Earth 3d文件和数字地球
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-155-158
Ю.М. Батурин, Y. Baturin, Евгений Еремченко, E. Eremchenko, Мария Захарова, M. Zakharova
{"title":"3D-document and Digital Earth","authors":"Ю.М. Батурин, Y. Baturin, Евгений Еремченко, E. Eremchenko, Мария Захарова, M. Zakharova","doi":"10.30987/graphicon-2019-2-155-158","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-155-158","url":null,"abstract":"The paper considers the question of bringing the existing set of laws, regulatory and legislative documents in line with the Digital Earth - new and promising universal and global environment for the information integration on all possible scales simultaneously. Existing of 4 possible geovisualization methods is stated, typology of geovisualization methods is proposed and discussed. A practical approach for determining the belonging of visualization to a particular type, based on the use of diagrams \"angle-range\", is proposed. Concept of 3D-documents within Digital Earth paradigm is unveiled and explained, brief history of the developing and adopting of this concept is described, the prospects of the future evolution of 3D-documents are considered briefly.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123579912","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: 6
Restricted Extensions for GPU Photo-realistic Renderer 限制扩展GPU逼真的渲染器
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-37-42
В. В. Санжаров, V. Sanzharov, В.А. Фролов, V. Frolov, Илья Павлов, Ilia Pavlov
{"title":"Restricted Extensions for GPU Photo-realistic Renderer","authors":"В. В. Санжаров, V. Sanzharov, В.А. Фролов, V. Frolov, Илья Павлов, Ilia Pavlov","doi":"10.30987/graphicon-2019-2-37-42","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-37-42","url":null,"abstract":"Photo-realistic rendering systems on CPU traditionally have significant flexibility achieved mainly by the ability for end user to write custom plugins or shaders. The same cannot be said about majority of photo-realistic GPU renderers. Most «classic» approaches to design of user-extendable software on CPU, such as object-oriented plugins are not very well suited for GPU programming. In this paper we propose a restricted approach to developing extendable GPU rendering system at low development cost. Our hardware agnostic light-weight approach can be applied to existing rendering systems with minimal changes to them. We apply our approach to the problem of procedural textures implementation and show that, in addition to simplicity, our approach is faster then existing GPU solutions.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114827894","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
Electroencephalogram Analysis Based on Gramian Angular Field Transformation 基于Gramian角场变换的脑电图分析
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-273-275
Александр Витальевич Брагин, A. Bragin, Владимир Спицын, V. Spicyn
{"title":"Electroencephalogram Analysis Based on Gramian Angular Field Transformation","authors":"Александр Витальевич Брагин, A. Bragin, Владимир Спицын, V. Spicyn","doi":"10.30987/graphicon-2019-2-273-275","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-273-275","url":null,"abstract":"This paper addresses the problem of motion imagery classification from electroencephalogram signals which related with many difficulties such on human state, measurement accuracy, etc. Artificial neural networks are a good tool to solve such kind of problems. Electroencephalogram is time series signals therefore, a Gramian Angular Fields conversion has been applied to convert it into images. GAF conversion was used for classification EEG with Convolutional Neural Network (CNN). GAF images are represented as a Gramian matrix where each element is the trigonometric sum between different time intervals. Grayscale images were applied for recognition to reduce numbers of neural network parameters and increase calculation speed. Images from each measuring channel were connected into one multi-channel image. This article reveals the possible usage GAF conversion of EEG signals to motion imagery recognition, which is beneficial in the applied fields, such as implement it in brain-computer interface.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133813122","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: 6
Implementation of Algorithms of Image Analysis in the Software Package ColourUnique PRO with the Aim of Increasing the Accuracy of Classification Types Individuals 在colorunique PRO软件包中实现图像分析算法，以提高分类类型个体的准确性
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-189-193
Юли Викторовна Тарасова, Iuliia Tarasova, Андрей Чечин, A. Chechin, Вячеслав Андреев, V. Andreev
{"title":"Implementation of Algorithms of Image Analysis in the Software Package ColourUnique PRO with the Aim of Increasing the Accuracy of Classification Types Individuals","authors":"Юли Викторовна Тарасова, Iuliia Tarasova, Андрей Чечин, A. Chechin, Вячеслав Андреев, V. Andreev","doi":"10.30987/graphicon-2019-2-189-193","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-189-193","url":null,"abstract":"This paper consider the possibilities and prospects of the ColorUnique Pro software complex as a tool for automating the \"Associative color space\"© method of professional orientation testing and improving the accuracy of classification of test forms representing color images. The authors provided the data of verification and testing of the methodology, reflect the relevance of the study and justify the need to translate the testing into the format of the software package. In the process of implementation of the program complex, has been identified a problems, proposed solutions and prospects for the development of the program. Now, the authors have successfully optimized the test form, significantly reduced the time of testing, created a color palette that facilitates evaluation and classification of the final color images.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131382881","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: 2
RANSAC ART Tomography RANSAC ART断层扫描
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-18-21
Владимир Емельянович Афанасьев, V. Afanasyev, Алексей Волобой, A. Voloboy
{"title":"RANSAC ART Tomography","authors":"Владимир Емельянович Афанасьев, V. Afanasyev, Алексей Волобой, A. Voloboy","doi":"10.30987/graphicon-2019-2-18-21","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-18-21","url":null,"abstract":"This paper describes using of per-voxel RANSAC approach in ART tomography. The method works as an addition to any ART and does not depend on its internal details. Firstly, the histograms of voxel map corrections are constructed in each voxel during usual pass of ART. Then, they are used to refine the absorption map. It allows to improve resulting voxel absorption map, reducing ghost effects caused by input data errors and inconsistency. This method was demonstrated with optical tomography algorithm as it has certain difficulties with input data. The proposed algorithm was implemented to run on GPU.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116438002","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
The Model of Reflective Surface based on The Scattering Layer with Diffuse Substrate and Randomly Rough Fresnel Boundary 基于漫射基底和随机粗糙菲涅耳边界散射层的反射面模型
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-198-201
Владимир Будак, V. Budak, Антон Гримайло, A. Grimailo
{"title":"The Model of Reflective Surface based on The Scattering Layer with Diffuse Substrate and Randomly Rough Fresnel Boundary","authors":"Владимир Будак, V. Budak, Антон Гримайло, A. Grimailo","doi":"10.30987/graphicon-2019-2-198-201","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-198-201","url":null,"abstract":"In this article, we describe the mathematical model of the reflective surface as a scattering layer with the diffuse substrate and randomly rough Fresnel boundary. This model opens the way for a physically correct description of the light reflection processes with polarization account and hence enables engineers and designers to obtain much more precise results in their work. The algorithm of Fresnel boundary modeling based on the method of mathematical expectations reduces calculation time by constructing the randomly rough surface only at the ray trajectory nodes instead of constructing realizations of a random field. As a part of the complete reflective surface model, the algorithm made it able for us to model the effect of the average lens emergence.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124833699","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 of a Surface Radiance Factor 表面辐射系数的数学模型
GraphiCon'2019 Proceedings. Volume 2 Pub Date : 2019-11-11 DOI: 10.30987/graphicon-2019-2-43-47
А А Басов, A. Basov, Владимир Будак, V. Budak
{"title":"Mathematical Model of a Surface Radiance Factor","authors":"А А Басов, A. Basov, Владимир Будак, V. Budak","doi":"10.30987/graphicon-2019-2-43-47","DOIUrl":"https://doi.org/10.30987/graphicon-2019-2-43-47","url":null,"abstract":"The article is devoted to the creation of a surface radiance factor mathematical model. The basis of the model is the solution of the boundary value problem of the radiative transfer equation (RTE). The surface is considered as a structure consisting of several turbid layers, each of which is characterized by its optical parameters. The top of the structure is randomly rough, uncorrelated, Fresnel. The lower boundary reflects perfectly diffusely. The complexity of solving the RTE boundary value problem for real layers is due to the fact that the suspended particles in each layer are always much longer than the wavelength. This leads to a strong anisotropy of the radiance angular distribution according to Mie theory. The solution comes down to a system of equations by the discrete ordinates method that consists of several hundred of differential equations. Subtraction of the anisotropic part from the solution based on an approximate analytical solution of the RTE allows avoiding this problem. The approximation is based on a slight decrease in the anisotropic part of the angular spectrum. The matrix-operator method determines the general solution for a complex multilayer structure. The calculation speed can be increased without compromising the accuracy of the solution with the help of the synthetic iterations method. The method consists of two stages: the first one repeats the described one with a small number of ordinates; on the second one the iteration of it is performed. The model is realised in the Matlab software.","PeriodicalId":409819,"journal":{"name":"GraphiCon'2019 Proceedings. Volume 2","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129731056","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: 2
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