Spanish Computer Graphics Conference最新文献_第9页

An Improved Parallel Technique for Neighbour Search on CUDA 一种改进的CUDA邻域并行搜索技术

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20171201

J. J. Perea, Juan M. Cordero

{"title":"An Improved Parallel Technique for Neighbour Search on CUDA","authors":"J. J. Perea, Juan M. Cordero","doi":"10.2312/ceig.20171201","DOIUrl":"https://doi.org/10.2312/ceig.20171201","url":null,"abstract":"In Computer Graphics is usual the modelling of dynamic systems through particles. The simulation of liquids, cloths, gas, smoke... are highlighted examples of that modelling. In this scope, is particularly relevant the procedure of neighbour particles searching, which represents a bottleneck in terms of computational cost. One of the most used searching techniques is the cell– based spatial division by cubes, where each cell is tagged by a hash value. Thus, all particles located into each cell have the same tag and are the candidate to be neighbours. The most useful feature of this technique is that it can be easily parallelized, what reduces the computational costs. Nevertheless, the parallelizing process has some drawbacks associated with data memory management. Also, during the process of neighbour search, it is necessary to trace into the adjacent cells to find neighbour particles, as a consequence, the computational cost is increased. To solve these shortcomings, we have developed a method that reduces the search space by considering the relative position of each particle in its own cell. This method, parallelized using CUDA, shows improvements in processing time and memory management over other “standard” spatial division techniques. (see http://www.acm.org/about/class/class/2012) CCS Concepts •Computing methodologies → Distributed computing methodologies; Physical simulation;","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":"80 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":"129180472","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

Modelling the Fluid-Boundary Interaction in SPH SPH流体-边界相互作用的模拟

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20181147

J. J. Perea, Juan M. Cordero

{"title":"Modelling the Fluid-Boundary Interaction in SPH","authors":"J. J. Perea, Juan M. Cordero","doi":"10.2312/ceig.20181147","DOIUrl":"https://doi.org/10.2312/ceig.20181147","url":null,"abstract":"Smoothed Particle Hydrodynamics (SPH) is a numerical method based on mutually interacting meshfree particles, and has been widely applied to fluid simulation in Computer Graphics. Originally SPH does not define the behaviour of the particle system in the contour, so the different variants of SPH have been solving this deficiency with different techniques. Some of these techniques are based on fictitious forces, specular particles or semi–analytic fields. However, all these proposals present a drawback, that are may introduce additional inaccuracy as a divergent behaviour of the particle dynamics or an artificial separation between the fluid limits and the contour. To solve these limitations at this paper presents a new technique based on contour particles that are used during simulation to model the interaction with the fluid. The use of contour particles had already been used in other works to construct the contour like a particle layer. That solution presents problems especially when increasing the complexity of the contour shape. In addition, unlike other techniques, this paper presents an additional advantage, the possibility of obtaining all the dynamic magnitudes for improving efficiency and versatility. CCS Concepts •Computing methodologies → Collision detection; Physical simulation;","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":"1 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":"131279417","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

3D Interaction with Smartphone-like Devices 与智能手机类设备的3D交互

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG12/154-154

A. Aguilera, Alejandro León, J. Torres

引用次数: 0

Light Source Detection in Photographs 照片中的光源检测

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG09/161-167

Jorge López-Moreno, Sunil Hadap, E. Reinhard, D. Gutierrez

引用次数: 14

A Visual Interface for Feature Subset Selection Using Machine Learning Methods 基于机器学习方法的特征子集选择可视化界面

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/CEIG.20181165

Diego Rojo, Laura Raya, M. Rubio-Sánchez, Alberto Sánchez

引用次数: 1

Synthetic Data Set Generation for the Evaluation of Image Acquisition Strategies Applied to Deep Learning Based Industrial Component Inspection Systems 基于深度学习的工业部件检测系统图像采集策略评价的合成数据集生成

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20211355

F. Saiz, Garazi Alfaro, I. Barandiaran, Sara García, M. P. Carretero, M. Graña

{"title":"Synthetic Data Set Generation for the Evaluation of Image Acquisition Strategies Applied to Deep Learning Based Industrial Component Inspection Systems","authors":"F. Saiz, Garazi Alfaro, I. Barandiaran, Sara García, M. P. Carretero, M. Graña","doi":"10.2312/ceig.20211355","DOIUrl":"https://doi.org/10.2312/ceig.20211355","url":null,"abstract":"Automated visual inspection is an ongoing machine vision challenge for industry. Faced with increasingly demanding quality standards it is reasonable to address the transition from a manual inspection system to an automatic one using some advanced machine learning approaches such as deep learning models. However, the introduction of neural models in environments such as the manufacturing industry find certain impairments or limitations. Indeed, due to the harsh conditions of manufacturing environments, there is usually the limitation of collecting a high quality database for training neural models. Also, the imbalance between non-defective and defective samples is very common issue in this type of scenarios. To alleviate these problems, this work proposes a pipeline to generate rendered images from CAD models of industrial components, to subsequently feed an anomaly detection model based on Deep Learning. Our approach can simulate the potential geometric and photometric transformations in which the parts could be presented to a real camera to faithfully reproduce the image acquisition behavior of an automatic inspection system. We evaluated the accuracy of several neural models trained with different synthetically generated data set simulating different transformations such as part temperature or part position and orientation with respect to a given camera. The results shows the feasibility of the proposed approach during the design and evaluation process of the image acquisition setup and to guarantee the success of the real future application. CCS Concepts • Computing methodologies → Quality Inspection; Industrial Manufacturing; Photo-realistic Rendering; CAD Models; Anomaly Detection; Deep Learning; Generative Adversarial Networks;","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","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":"124530133","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

PterosaVR MUVHN: una aplicación para la reconstrucción virtual de Tropeognathus mesembrinus 翼龙:中胚层Tropeognathus mesembrinus虚拟重建的应用

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20181159

Tonny Ruiz-Gijón, Marcos Gutiérrez Cubells, Borja Holgado, Hugo Salais López, M. Vidal-González, Anna García Forner

{"title":"PterosaVR MUVHN: una aplicación para la reconstrucción virtual de Tropeognathus mesembrinus","authors":"Tonny Ruiz-Gijón, Marcos Gutiérrez Cubells, Borja Holgado, Hugo Salais López, M. Vidal-González, Anna García Forner","doi":"10.2312/ceig.20181159","DOIUrl":"https://doi.org/10.2312/ceig.20181159","url":null,"abstract":"Tanto el paleoarte como las nuevas tecnologías suponen herramientas muy útiles y visualmente atractivas para la representación de la vida extinta. En este proyecto, ambas disciplinas han sido combinadas en el desarrollo de una aplicación móvil que permite, mediante el uso de un casco de realidad virtual, asistir a la reconstrucción del pterosaurio Tropeognathus mesembrinus, paseando a través de tres niveles anatómicos: el esqueleto, la musculatura y el aspecto externo. La reconstrucción culmina con una escena de Tropeognathus sobrevolando un paisaje del Cretácico Inferior. Además, incluye un visor 3D por el que se puede navegar por la anatomía del pterosaurio, así como una opción de poder mostrarlo en realidad aumentada al encontrar el logo del museo. En conclusión, esta aplicación supone una forma novedosa y atractiva de exponer una pieza paleontológica al público general, que podrá familiarizarse no sólo con Tropeognathus y los pterosaurios, sino también con el proceso de reconstrucción de la vida extinta. CCS Concepts • Applied → Virtual Reality, Augmented Reality;","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":"21 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":"128008873","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

Dos Sistemas de Realidad Aumentada para el Tratamiento de la Acrofobia 两种治疗恐高症的增强现实系统

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG08/249-252

David Pérez, M. C. J. Lizandra

引用次数: 0

Texturización automática en Entornos urbanos utilizando Algoritmos Genéticos

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/LocalChapterEvents/CEIG/CEIG09/135-144

María Dolores Robles-Ortega, José López Expósito, Lidia M. Ortega-Alvarado, Francisco R. Feito-Higueruela

{"title":"Texturización automática en Entornos urbanos utilizando Algoritmos Genéticos","authors":"María Dolores Robles-Ortega, José López Expósito, Lidia M. Ortega-Alvarado, Francisco R. Feito-Higueruela","doi":"10.2312/LocalChapterEvents/CEIG/CEIG09/135-144","DOIUrl":"https://doi.org/10.2312/LocalChapterEvents/CEIG/CEIG09/135-144","url":null,"abstract":"La representación virtual de entornos reales en 3 D plantea ciertos problemas de texturización cuando dichos escenarios son de grandes dimensiones. Concretamente, el modelado de un entorno urbano con miles de ediﬁcios puede suponer un enorme reto si debe respetarse la información real del plano de la ciudad con manzanas, alturas de ediﬁcios reales, así como nombres de calles u otro tipo de información relevante. El objetivo ﬁnal es posibilitar la navegación libre por dicho entorno virtual ofreciendo al usuario la mayor sensación de realismo posible, independientemente del lugar exacto por donde decida moverse en la ciudad, y exista o no información de interés en dicha zona. A pesar de partir de toda la información posible disponible en un SIG urbano, éste no suele almacenar datos relativos al aspecto real de los inmuebles, lo cual resulta imprescindible para realizar un levantamiento realista de la ciudad completa. En este trabajo se propone una solución alternativa, aplicando texturas de forma automática a los ediﬁcios de los cuales no se tenga información exacta de su posible aspecto. Para ello se emplean dos algoritmos genéticos para asignar automáticamente texturas","PeriodicalId":385751,"journal":{"name":"Spanish Computer Graphics Conference","volume":"20 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":"114164746","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

Depth Map Repairing for Building Reconstruction 建筑重建的深度图修复

Spanish Computer Graphics Conference Pub Date : 1900-01-01 DOI: 10.2312/ceig.20181162

C. Andújar, O. Argudo, I. Besora, P. Brunet, A. Chica, Marc Comino

引用次数: 0