Proceedings of the 32nd International Conference on Computer Graphics and Vision最新文献_第2页

Comparative Study of Compact Descriptors for Vector Map Protection 矢量映射保护的紧凑描述符比较研究

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-796-804

A.S. Asanov, Y. Vybornova, V. Fedoseev

{"title":"Comparative Study of Compact Descriptors for Vector Map Protection","authors":"A.S. Asanov, Y. Vybornova, V. Fedoseev","doi":"10.20948/graphicon-2022-796-804","DOIUrl":"https://doi.org/10.20948/graphicon-2022-796-804","url":null,"abstract":"The paper is devoted to the study of compact descriptors of a vector map to be used as a zero watermark in the problems of cartographic data protection, namely, copyright protection and protection against unauthorized changes. The applicability of descriptors for these problems is determined by the characteristics of the resistance of their values to map transformations (adding, deleting vertices and individual objects, rotating the map, changing the order of the vertices of map objects, etc.). All descriptors are based on the use of the Ramer-Douglas-Pecker algorithm to extract a significant part of the polygons that determine the shape of the object. In our experimental studies, a map of urban development was used, which was divided into equal sections. Compact descriptors were calculated for each of them. Next, the map distortion procedure was performed, after which the stability of the descriptor values was checked. The conducted studies revealed the best descriptor for solving the copyright protection problem, as well as several combinations of other descriptors to identify certain distortions of the vector map. In addition, a modification of the Ramer-DouglasPecker algorithm, which is more efficient than the basic algorithm, is proposed.","PeriodicalId":299055,"journal":{"name":"Proceedings of the 32nd International Conference on Computer Graphics and Vision","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124306661","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

Extraction of Moving Objects in the Presence of Scale Transformations in a Sequence of Images 一组图像中存在尺度变换的运动物体的提取

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-620-627

P. Babayan, E.S. Kozhina

引用次数: 0

Study of the Influence of Intelligent Interface Elements on the Perception of Visual Information 智能界面元素对视觉信息感知的影响研究

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-982-990

S.Yu. Shchur, V. Yanchus

{"title":"Study of the Influence of Intelligent Interface Elements on the Perception of Visual Information","authors":"S.Yu. Shchur, V. Yanchus","doi":"10.20948/graphicon-2022-982-990","DOIUrl":"https://doi.org/10.20948/graphicon-2022-982-990","url":null,"abstract":"The efficiency of fulfilling the tasks set by the operator of remote facilities directly depends on the features of displaying the information that he receives and on the basis of which he draws certain conclusions and makes decisions. This article formulates an approach to the formation of stimulus material based on the factors influencing the conditions of perception of the output information. Stimulus material was prepared in the amount of 54 illustrations for the experiment. The parametric data of the stimulus material viewing template obtained from the eyetracker are analyzed using mathematical statistics tools. The influence of factors determined in the work on the average time of viewing a stimulus, the average duration of fixation when considering one stimulus, and the average number of fixations when considering one stimulus is revealed. The average amplitude during the examination of the stimulus was analyzed. It was determined that there is a statistically significant influence of information content on the solution of the problem of identifying objects in the stimulus material. It is also indicated that the gender feature has a statistically significant effect on the parameters of the template for viewing the stimulus material and, accordingly, the time for solving the problem of the experiment. Based on the data obtained, new hypotheses about the effective work with images in a certain color combination are formulated.","PeriodicalId":299055,"journal":{"name":"Proceedings of the 32nd International Conference on Computer Graphics and Vision","volume":"296 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114388778","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

Аutomatic Constructing the NURBS Surface of a Ship's Hull Аutomatic构造船体的NURBS表面

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-162-169

E. Popov, I. Shorkina

{"title":"Аutomatic Constructing the NURBS Surface of a Ship's Hull","authors":"E. Popov, I. Shorkina","doi":"10.20948/graphicon-2022-162-169","DOIUrl":"https://doi.org/10.20948/graphicon-2022-162-169","url":null,"abstract":"The article describes an automated algorithm for the formation of a geometric model of the ship's hull surface according to an electronic theoretical drawing. An analysis of the traditional technology for the formation of ship surfaces based on the Russian CAD system (Sea Solution) is presented. The main disadvantages of traditional technology are determined. The automated algorithm for generating a geometric surface model is designed to reduce the complexity of manual design. The mathematical apparatus for constructing NURBS curves and surfaces serves as the instrumental basis of the algorithm, which provides a simple user control of forms. On the basis of a theoretical drawing generated by the CAD system, a cloud of approximation points was created to build the surface of the ship's hull from them. A general scheme of automatic construction of elements of the surface model in the initial approximation is given. To solve this problem, a software product based on HTML5, JavaScript and Three JS and Verb libraries was created. The use of the JavaScript language is due to its versatility, a large amount of information in the public domain. WebGL is used to implement 3D graphics rendering pipeline. Functions from the Three JS libraries made it possible to implement methods used in analytical geometry. The operability of the developed algorithm is demonstrated on the example of building a 3D model of the hull surface of a fishing trawler.","PeriodicalId":299055,"journal":{"name":"Proceedings of the 32nd International Conference on Computer Graphics and Vision","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115002736","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

Features of Solid Modeling in Exact Terms 实体精确建模的特点

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-947-955

A. Bezditnyi

{"title":"Features of Solid Modeling in Exact Terms","authors":"A. Bezditnyi","doi":"10.20948/graphicon-2022-947-955","DOIUrl":"https://doi.org/10.20948/graphicon-2022-947-955","url":null,"abstract":"The basic operations of constructing solid-state geometric objects in the form of an organized threeparameter set of points in three-dimensional space are described based on algorithms implemented in point calculus. These include shaping operations of extrusion and rotation and a kinematic operation with the possibility of axial rotation of the section plane. For the kinematic operation and the extrusion operation, algorithms are given in a general form without reference to specific examples. Moreover, due to the use of point calculus, the proposed algorithms can be generalized to a multidimensional space and allow for an analytical description of multidimensional solid models. Particular attention was paid to the construction of a surface of revolution with a generatrix of a semicycloid in various parametrizations, examples of constructed curves and surfaces were given, and an algorithm for constructing a body of revolution was obtained. Solid models are currently widely used in simulation modeling and differ from geometric modeling and computer graphics by the maximum approximation of the model to its physical prototype. The use of solid modeling methods makes it possible to carry out complex engineering calculations performed during the design process in a semi-automatic mode. The paper gives examples of the use of the obtained geometric algorithms, justifies the use of point calculus as the main tool for the implementation of three-dimensional solid models.","PeriodicalId":299055,"journal":{"name":"Proceedings of the 32nd International Conference on Computer Graphics and Vision","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123210947","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

Comparative Analysis of Stereo Vision Algorithms Implementation on Various Architectures 立体视觉算法在不同架构下实现的比较分析

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-484-489

A. I. Efimov, Dmitry I. Ustukov

引用次数: 0

Method for Constructing a Digital Analogue of a Real World Environment Using Neural Networks 利用神经网络构建真实世界环境数字模拟的方法

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-87-98

M. Sorokin, D. Zhdanov, A. Zhdanov

{"title":"Method for Constructing a Digital Analogue of a Real World Environment Using Neural Networks","authors":"M. Sorokin, D. Zhdanov, A. Zhdanov","doi":"10.20948/graphicon-2022-87-98","DOIUrl":"https://doi.org/10.20948/graphicon-2022-87-98","url":null,"abstract":"The problem of forming natural lighting conditions for virtual objects and interaction between real and virtual objects is not yet solved. The main goal of this study is to investigate the possibility of eliminating the causes of the mixed reality visual perception conflicts by replacing real-world objects with their virtual counterparts. The main idea is to transfer all of the real-world objects into a virtual environment. This solution transforms the mixed reality system into a virtual reality system and ensures the correct physical and light interaction between objects of different worlds. This will open up new possibilities for mixed reality systems, e.g., illuminating a dark room with a virtual light source, or seeing the reflection of virtual objects in a real mirror. This paper presents an algorithm that uses machine learning tools and neural network technologies along with RGB-D sensors and a Z-buffer to obtain a real-world point cloud. This approach allows not only to select scene items but also to determine their position and size. The PointNet network architecture trained on the ScanNet dataset was used to annotate and segment scene data. The \"Total3D understanding\" network was used to build a triangular grid. Finally, a real-world room reconstruction system was implemented using RGB images and point clouds as input parameters. An example of the reconstruction of a simple room interior and reconstruction quality assessment is presented.","PeriodicalId":299055,"journal":{"name":"Proceedings of the 32nd International Conference on Computer Graphics and Vision","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123938167","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

Visualization of Water Flow by Multicolor Particle Image Velocimetry 用多色粒子图像测速技术实现水流可视化

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-414-420

S. Usmanova, N. Skornyakova, S. Belov, M. Sapronov

引用次数: 0

Research of Materials and Constructions for Designing the Shell of Pulmonary Rehabilitation Apparatus for Patients with COVID-19 新型冠状病毒肺炎患者肺康复器外壳设计材料及结构研究

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-1077-1082

E. Vekhter, N.S. Zhamantaev, V. V. Chertkova, A. Shklyar

引用次数: 0

Methods for Calculating and Visualizing the Spatial Distribution of Illumination in Three-dimensional Models of Optically Complex Scenes 光学复杂场景三维模型中光照空间分布的计算与可视化方法

Proceedings of the 32nd International Conference on Computer Graphics and Vision Pub Date : 1900-01-01 DOI: 10.20948/graphicon-2022-149-160

I. Kinev, D. Zhdanov, A. Zhdanov, I. Potemin

{"title":"Methods for Calculating and Visualizing the Spatial Distribution of Illumination in Three-dimensional Models of Optically Complex Scenes","authors":"I. Kinev, D. Zhdanov, A. Zhdanov, I. Potemin","doi":"10.20948/graphicon-2022-149-160","DOIUrl":"https://doi.org/10.20948/graphicon-2022-149-160","url":null,"abstract":"In this paper, we consider the problem of calculating the effective protection of an image from spurious radiation, one of the causes of which is the scattering of light on non-imaging elements of an optical device. The purpose of this work is to improve the means of searching and visualizing the sources of parasitic illumination of an image for designing and analyzing the light protection of optical devices. A visualization of the spurious radiation illumination distribution on the surfaces of an optical device is proposed. The global illumination calculation is based on an advanced bi- directional stochastic ray tracing method with backward photon maps. This method is highly efficient, since it simultaneously uses direct and backward photon maps, which accumulate the distributions of the areas of light emission and the visibility of the scattering elements of the optical device, respectively. The method allows representing the average illumination of the image, accumulated on the diffuse objects of the optical device that form the given illumination. By visualizing it, you can more effectively and clearly find the elements of the optical device that create spurious illumination in the image and degrade the image quality. With this information, the designer of an optical device can develop special means of light protection or use special light- absorbing coatings for such elements. The proposed algorithms were implemented in the Lumicept software package, with the help of which the scattered light in the lens objective was calculated and the result of the stray illumination visualization was presented.","PeriodicalId":299055,"journal":{"name":"Proceedings of the 32nd International Conference on Computer Graphics and Vision","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128328383","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