发布求助
文献互助 智能选刊 最新文献

Spanish Computer Graphics Conference最新文献

筛选
英文 中文
A Virtual Reality Front-End for Earthquake Simulation 地震模拟的虚拟现实前端
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20191204
Josep Lluis Fita, G. Besuievsky, G. Patow
{"title":"A Virtual Reality Front-End for Earthquake Simulation","authors":"Josep Lluis Fita, G. Besuievsky, G. Patow","doi":"10.2312/ceig.20191204","DOIUrl":"https://doi.org/10.2312/ceig.20191204","url":null,"abstract":"Virtual Reality has traditionally been used in Cultural Heritage for giving to the final user an immersive experience over recreated scenarios, which usually have been designed and focused on static environment recreation. In spite of its importance for cultural heritage, we have found a lack of virtual reality applications to recreate structural and seismic simulations on historical buildings. In this paper we describe a low-cost virtual reality solution, affordable for all kinds of users that own a smart-phone. Through our application, the users can have an immersive experience that combines the ancient building recreation, its structural simulation and the natural phenomena simulation like earthquakes. CCS Concepts •Computing methodologies → Physical simulation; •Applied computing → Virtual Reality;","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124135326","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
Screen Space Obscurances 屏幕空间遮挡
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG09/251-254
Nicolau Sunyer, J. Gumbau, M. Chover, M. Sbert
{"title":"Screen Space Obscurances","authors":"Nicolau Sunyer, J. Gumbau, M. Chover, M. Sbert","doi":"10.2312/LocalChapterEvents/CEIG/CEIG09/251-254","DOIUrl":"https://doi.org/10.2312/LocalChapterEvents/CEIG/CEIG09/251-254","url":null,"abstract":"www.eg.org diglib.eg.org Abstract La simulación de la iluminación indirecta en una escena suele ser muy costosa por lo que normalmente ésta se usa de forma precalculada para escenas estáticas. En este artículo proponemos un algoritmo que aproxima el cálculo de la iluminación indirecta enteramente en GPU y permite escenas dinámicas pues se recalcula para cada fotograma. La solución propuesta se basa en la técnica de Obscurances y permite simular el efecto de sangrado de color (color-bleeding). Al estar el muestreo basado en espacio de imagen no se usan ni reproyecciones ni transformaciones, simplificando los calculos. Nuestra solución está formada por la fusión de tres mapas diferentes de Obscurances, de baja, media y alta frecuencia, que permiten simular los distintos niveles de interacción de la iluminación indirecta, resaltando los detalles sin sacrificar la interacción con los oclusores a distancia media y lejana. El sistema no requiere del uso de filtrado del mapa de Obscurances pues se ha optimizado el muestreo de la escena y se obtienen imágenes con muy poco ruido usando pocas muestras por píxel.","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131314219","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
S3Dc: A 3Dc-based Volume Compression Algorithm S3Dc:基于3d的体积压缩算法
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG08/095-104
He Yela, I. Navazo, Pere-Pau Vázquez
{"title":"S3Dc: A 3Dc-based Volume Compression Algorithm","authors":"He Yela, I. Navazo, Pere-Pau Vázquez","doi":"10.2312/LocalChapterEvents/CEIG/CEIG08/095-104","DOIUrl":"https://doi.org/10.2312/LocalChapterEvents/CEIG/CEIG08/095-104","url":null,"abstract":"Volumes acquired for medical purposes are continuously increasing in size, faster than graphic cards memory capacity. Large volumetric datasets do not fit into GPU memory and therefore direct rendering is not possible. Even large volumes that still fit into GPU memory make frame rates decay. In order to reduce the size of large volumetric models, we present a new compression scheme. In this paper we present S3Dc, a lossy volume compression algorithm suitable for scalar values. It is inspired in hardware-accelerated 3Dc normal compression technique. S3Dc allows us to compress the volume in CPU up to a 4:1 or 8:1 ratio, while still yielding good quality results. We provide details on the compression scheme and show how to render directly from a S3Dc compressed texture. Furthermore, we analyze the image quality theoretical error and the average error with several images in order to assess the results.","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131349261","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: 12
Sistema de Realidad Aumentada para enseñanza de Geometría 用于几何教学的增强现实系统
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG09/027-036
Gustavo Rovelo, Francisco Abad, M. C. J. Lizandra, Emilio Camahort
{"title":"Sistema de Realidad Aumentada para enseñanza de Geometría","authors":"Gustavo Rovelo, Francisco Abad, M. C. J. Lizandra, Emilio Camahort","doi":"10.2312/LocalChapterEvents/CEIG/CEIG09/027-036","DOIUrl":"https://doi.org/10.2312/LocalChapterEvents/CEIG/CEIG09/027-036","url":null,"abstract":"www.eg.org diglib.eg.org Abstract Este artículo presenta el diseño e implementación de un sistema de Realidad Aumentada orientado a la enseñanza de conceptos abstractos en Geometría. Este sistema permite mostrar al alumno escenas 3D interactivas, que pueden ser exploradas desde multitud de puntos de vista y que le ayudan a mejorar su intuición espacial. El sistema se puede utilizar en diferentes escenarios sin necesidad de hardware especializado. Se puede utilizar tanto en el aula, como herramienta de apoyo al profesor, como en casa, sirviendo de instrumento para el estudio personal. El profesor puede crear nuevos ejercicios mediante una sencilla descripción de escenas basada en XML, y el sistema es capaz de corregirlos automáticamente, dando al alumno retroalimentación en tiempo real sobre sus respuestas. En este artículo también presentamos la configuración idónea del entorno de trabajo derivada de nuestra experiencia. También presentamos una propuesta de utilización de distintos materiales para construir los marcadores que mejoran el proceso de detección de los mismos.","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124683546","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: 3
Locating Companies in 3D Urban Environments on the Internet 在互联网上的3D城市环境中定位公司
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG12/077-080
A. Estrella, M. D. Robles-Ortega, Lidia M. Ortega-Alvarado, F. Feito-Higueruela
{"title":"Locating Companies in 3D Urban Environments on the Internet","authors":"A. Estrella, M. D. Robles-Ortega, Lidia M. Ortega-Alvarado, F. Feito-Higueruela","doi":"10.2312/LocalChapterEvents/CEIG/CEIG12/077-080","DOIUrl":"https://doi.org/10.2312/LocalChapterEvents/CEIG/CEIG12/077-080","url":null,"abstract":"3D visualization is being incorporated in a lot of fields, including Geographic Information Systems (GIS). In addition, the Internet is the most popular method to find information, due to its accessibility. For this reason, most companies and businesses are interested in showing their products on the Web to make them well-known to many people. Considering all these concepts, this paper explains the process of developing a web application prototype with some GIS features. The main goal is to obtain business information, the location and the 2.5D navigation in an urban environment. In this way, through a web browser, the user will be able to search for companies by category, get information and see the scene from different levels of detail.","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133863119","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
Sensitivity Analysis in Shape Optimization using Voxel Density Penalization 基于体素密度惩罚的形状优化灵敏度分析
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20191201
D. Montoya-Zapata, D. Acosta, A. Moreno, J. Posada, O. Ruiz-Salguero
{"title":"Sensitivity Analysis in Shape Optimization using Voxel Density Penalization","authors":"D. Montoya-Zapata, D. Acosta, A. Moreno, J. Posada, O. Ruiz-Salguero","doi":"10.2312/ceig.20191201","DOIUrl":"https://doi.org/10.2312/ceig.20191201","url":null,"abstract":"Shape optimization in the context of technical design is the process by which mechanical demands (e.g. loads, stresses) govern a sequence of piece instances, which satisfy the demands, while at the same time evolving towards more attractive geometric features (e.g. lighter, cheaper, etc.). The SIMP (Solid Isotropic Material with Penalization) strategy seeks a redistribution of local densities of a part in order to stand stress / strain demands. Neighborhoods (e.g. voxels) whose density drifts to lower values are considered superfluous and removed, leading to an optimization of the part shape. This manuscript presents a study on how the parameters governing the voxel pruning affect the convergence speed and performance of the attained shape. A stronger penalization factor establishes the criteria by which thin voxels are considered void. In addition, ahe the filter discourages punctured, chessboard pattern regions. The SIMP algorithm produces a forecasted density map on the whole piece voxels. A post-processing is applied to effectively eliminate voxels with low density, to obtain the effective shape. In the literature, mechanical performance finite element analyses are conducted on the full voxel set with diluted densities by linearly weakening each voxel resistance according to its diluted density. Numerical tests show that this approach predicts a more favorable mechanical performance as compared with the one obtained with the shape which actually lacks the voxels with low density. This voxel density based optimization is particularly convenient for additive manufacturing, as shown with the piece actually produced in this work. Future endeavors include different evolution processes, albeit based on variable density voxel sets, and mechanical tests conducted on the actual sample produced by additive manufacture. CCS Concepts •Applied computing → Computer-aided manufacturing; •Computing methodologies → Modeling and simulation;","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133721634","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
Visual Language Generalization for Procedural Modeling of Buildings 建筑过程建模的视觉语言概括
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG12/057-066
Santiago Barroso, G. Patow
{"title":"Visual Language Generalization for Procedural Modeling of Buildings","authors":"Santiago Barroso, G. Patow","doi":"10.2312/LocalChapterEvents/CEIG/CEIG12/057-066","DOIUrl":"https://doi.org/10.2312/LocalChapterEvents/CEIG/CEIG12/057-066","url":null,"abstract":"our on a for models architectonic structures modeled 2D construction","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114577546","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
Design and Implementation of a Volumetric Merging Tool 体积合并工具的设计与实现
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20181154
Isabel Vidaurre-Gallart, A. Sújar, Marcos García
{"title":"Design and Implementation of a Volumetric Merging Tool","authors":"Isabel Vidaurre-Gallart, A. Sújar, Marcos García","doi":"10.2312/ceig.20181154","DOIUrl":"https://doi.org/10.2312/ceig.20181154","url":null,"abstract":"The study of the human brain is one of the biggest research challenges nowadays. Thanks to the impressive improvement in technology, great advances are being achieved in the study of the microanatomical structures of the neurons, which are the main nervous system processing cells. The study of those structures requires to capture high-resolution images. In such cases, due to the resolution required, processing of complete neurons is unfeasible. The purpose of this project is to provide the neuroscientists with a tool that allows them to visualize and reconstruct complete neurons from multiple high-resolution sections. To this end, we developed a tool capable of loading different volumetric data sets and merging them into a new volume. A rendering engine was designed to support several volumetric rendering modes. The graphical user interface allows the user to interact with the volumes in intuitive way and facilitates volume stitching task. Furthermore, the implementation makes use of GPU to improve the application. CCS Concepts •Computing methodologies → Volumetric models;","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114813617","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
Visualización Esférica de Terreno 3D para Sistemas de Información Geográfica 地理信息系统的三维球形地形可视化
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG08/001-010
María Ten, J. Torres, Jesús Zarzoso, Rafael Gaitán, J. Lluch
{"title":"Visualización Esférica de Terreno 3D para Sistemas de Información Geográfica","authors":"María Ten, J. Torres, Jesús Zarzoso, Rafael Gaitán, J. Lluch","doi":"10.2312/LocalChapterEvents/CEIG/CEIG08/001-010","DOIUrl":"https://doi.org/10.2312/LocalChapterEvents/CEIG/CEIG08/001-010","url":null,"abstract":"En este artículo, se presenta una librería multiplataforma desarrollada en C++ y Java sobre el grafo de escena de OpenSceneGraph que permite visualizar terrenos y planetas tridimensionales con multirresolución dependiente de la vista de forma eficiente y dinámica. La librería es capaz de visualizar datos de elevación o de textura (ortofotos o datos vectoriales rasterizados) tanto de archivos locales como de servidores remotos, sin necesidad de realizar un preproceso previo a la visualización. Nuestra finalidad es aportar un conjunto de herramientas software para la visualización y manipulación tridimensional de datos geoespaciales integrada en un Sistema de Información Geográfica.","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128222872","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
A System Proposal for Interactive Deformation of Large Medical Volumes 大医学卷交互变形的系统方案
Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20141111
A. Aguilera, Alejandro León, L. Escudero, Manuel García Sánchez
{"title":"A System Proposal for Interactive Deformation of Large Medical Volumes","authors":"A. Aguilera, Alejandro León, L. Escudero, Manuel García Sánchez","doi":"10.2312/ceig.20141111","DOIUrl":"https://doi.org/10.2312/ceig.20141111","url":null,"abstract":"In the field of volume deformation, an open research topic is the interactive and physically plausible deformation and rendering of large medical volumes. Many approaches to deform volumetric models have been proposed, offering a trade-off between realism and model resolution depending on the goal. In this paper, we study the main techniques to deform volumetric models, focusing on the works that address interactive realistic deformation of large models and we outline the requirements needed to build an integrated system to interactively deform and visualize large volumes using the GPU. We also present a prototype of application that shows the viability of implementing such a system. For this prototype, we propose an enhanced deformation technique and a new fast deformed volume visualization scheme, assuring the system interactivity at any time.","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134138092","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信