XXIX Spanish Computer Graphics Conference
Donosti - San Sebastián, Spain June 26 – 28, 2019
Conference Chair
Miguel Ángel Otaduy (Universidad Rey Juan Carlos)
Program Co-Chairs
Dan Casas (Universidad Rey Juan Carlos) Adrián Jarabo (Universidad de Zaragoza)
Local Chair Jorge Posada (Vicomtech)
Proceedings Production Editor
Dieter W. Fellner (TU Darmstadt & Fraunhofer IGD, Germany) Sponsored by EUROGRAPHICS Association
DOI: 10.2312/ceig.20192016 https://www.eg.org https://diglib.eg.org
All rights reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machines or similar means, and storage in data banks.
Copyright c2019 by the Eurographics Association Postfach 2926, 38629 Goslar, Germany
Published by the Eurographics Association –Postfach 2926, 38629 Goslar, Germany–
in cooperation with
Institute of Computer Graphics & Knowledge Visualization at Graz University of Technology and
Fraunhofer IGD (Fraunhofer Institute for Computer Graphics Research), Darmstadt ISBN 978-3-03868-093-2
The electronic version of the proceedings is available from the Eurographics Digital Library at https://diglib.eg.org
Table of Contents
Table of Contents . . . iii
Foreword for Special Section . . . v
Organizers . . . vi
Advisory Board / International Program Committee / Additional Reviewers . . . vii
Author Index . . . viii
Full Papers Modal Locomotion of C. elegans . . . 1
Andoni Mujika, Sara Merino, Peter Leškovský, Gorka Epelde, David Oyarzun, and Miguel Angel Otaduy A Level-of-Detail Technique for Urban Physics Calculations in Large Urban Environments . . . 9
David Muñoz Novoa, Gonzalo Besuievsky, and Gustavo Patow Procedural Location of Roads Using Desire Paths . . . 19
Pablo Real, Francisco Martínez-Gil, Rafael J. Martínez-Durá, and Ignacio García-Fernández Structure-preserving Style Transfer . . . 25
Santiago Calvo, Ana Serrano, Diego Gutierrez, and Belen Masia Sensitivity Analysis in Shape Optimization using Voxel Density Penalization . . . 31
Diego Montoya-Zapata, Diego A. Acosta, Aitor Moreno, Jorge Posada, and Oscar Ruiz-Salguero Perfect Spatial Hashing for Point-cloud-to-mesh Registration . . . 41
Daniel Mejia-Parra, Juan Lalinde-Pulido, Jairo R. Sánchez, Oscar Ruiz-Salguero, and Jorge Posada View-dependent Hierarchical Rendering of Massive Point Clouds through Textured Splats . . . 51
Marc Comino Trinidad, Antonio Chica Calaf, and Carlos Andújar Gran A Virtual Reality Front-End for Earthquake Simulation . . . 59
Josep Lluis Fita, Gonzalo Besuievsky, and Gustavo A. Patow Short Papers User-reconfigurable CAD Feature Recognition in 1- and 2-topologies with Reduction of Search Space via Geometry Filters . . . 69
Juan Camilo Pareja Corcho, Oscar Mauricio Betancur Acosta, Oscar E. Ruiz, and Carlos Cadavid A Voxel-based Deep Learning Approach for Point Cloud Semantic Segmentation . . . 73
Miguel Díaz-Medina, José-Manuel Fuertes-García, Carlos-Javier Ogayar-Anguita, and Manuel Lucena Visiting Ancient Rome with a Serious Game . . . 77 Carlos Galí, Inmaculada Remolar, and Cristina Rebollo
3D Environment Understanding in Real-time Using Input CAD Models for AR Applications . . . 81 David Jurado Rodríguez, Juan Manuel Jurado Rodríguez, Lidia Ortega Alvarado, and Francisco Ramón
Feito Higueruela
Multispectral Registration, Undistortion and Tree Detection for Precision Agriculture . . . 85 Alfonso López Ruiz, Juan Manuel Jurado Rodríguez, Carlos Javier Ogayar Anguita, and Francisco Ramón Feito Higueruela
A Virtual Reality Front-end for City Modeling . . . 89 Eduard Rando, Carlos Andujar, and Gustavo A. Patow
Prototype of an Automatic Registration System for the Remains of Archaeological Sites . . . 93 José Luis López Ruiz, Lidia Ortega Alvarado, and Francisco Ramón Feito Higueruela
Smooth Transitioning Between two Walking Metaphors for Virtual Reality Applications . . . 97 Isadora Salvetti, Alex Rios, and Pelechano Nuria
Foreword for Special Section
The Spanish Conference on Computer Graphics (CEIG) is an annual event sponsored by the Spanish Section of the Eurographics Association. The goal of the conference is to promote discussion between researchers and practitioners of Computer Graphics and related areas in Spain, to disseminate recent advances in the field, and to present and discuss ongoing work. The conference includes regular paper sessions, invited talks presenting high-quality recent work, short paper, and poster presentations, and keynote talks from internationally renowned speakers in all areas of visual computing.
The 29th edition of CEIG was organized by Vicomtech, and held in Donostia/San Sebastian (Spain), from June 26-28, 2019. The conference received 20 full paper and 8 short paper submissions, from which 13 were accepted as full papers, and 9 were accepted as short papers. From the 13 full papers we, together with the advice of last year’s CEIG’18 Program Chairs (Prof. Carlos Ureña and Prof. Ignacio García- Fernandez), selected the 5 best papers to appear in a Special Section in the journal Computers & Graphics, which underwent a second review cycle.
We want to thank the authors who prepared and submitted their work, the many reviewers that evaluated these submissions, and the coordination and reviewing work put in by all our colleagues who accepted to serve on the International Program Committee. Without any of them, CEIG would not happen.
We would also like to thank the invited speakers, Prof. Lourdes Agapito (UCL), Dr. Carlos Venegas (Bright Machines), and Prof. Pablo Artal (Universidad de Murcia) for accepting our invitations, and mak- ing time in their schedules for delivering very exciting talks about a diversity of topics. We would like to thank the local organizers, led by Dr. Jorge Posadas (Vicomtech), Prof. Alex García-Alonso (EHU-UPV), and Prof. Luis Matey (CEIG), for the organization of all logistic aspects of the conference. Finally, we want to thank the members of the executive board of Eurographics Spanish Section for inviting us to serve as Program Co-Chairs for this year’s CEIG.
Dan Casas, Universidad Rey Juan Carlos Adrián Jarabo, Universidad de Zaragoza
Advisory Board
Carlos Ureña, Universidad de Granada
Ignacio García-Fernández, Universidad de Valencia
International Program Committee
Francisco Abad, Universitat Politècnica de València Antonio Agudo, Universitat Politècnica de Catalunya Carlos Aliaga, Universidad Rey Juan Carlos
Carlos Andújar, Universitat Politècnica de Catalunya Miguel Chover, Universitat Jaume I
Marc Comino, Universitat Politècnica de Catalunya Jose I. Echevarría, Adobe
Francisco R. Feito, Universidad de Jaén
Elena Garcés, Desilico Labs – Universidad Rey Juan Carlos Ángel Luis García-Fernández, Universidad de Jaén
Carlos Garre, Universidad Rey Juan Carlos Pedro Hermosilla, Ulm University
José A. Iglesias-Guitián, Universitat Autònoma de Barcelona M. Carmen Juan, Universitat Politècnica de València
Julio Marco, Universidad de Zaragoza Ricardo Marques, University of Minho Francisco J. Melero, Universidad de Granada Eder Miguel, Universidad Rey Juan Carlos Marta Ortín-Obón, Universidad de Zaragoza Sergio Orts-Escolano, Universidad de Alicante Gustavo Patow, Universitat de Girona
Nuria Pelechano, Universitat Politècnica de Catalunya Jesús Pérez, Universidad Rey Juan Carlos
Alejandro Rodríguez-Aguilera, Desilico Labs Alberto Sánchez, Universidad Rey Juan Carlos Ana Serrano, Universidad de Zaragoza
Gorka Vélez, Vicomtech
Additional Reviewers
Javier Tapia, Universidad Rey Juan Carlos Guillermo Rus, Universidad de Granada Sara C. Schvartzman, MPC
Alberto García-García, Universidad de Alicante Michael Rabinovich, ETH Zuerich
Sergiu Oprea, Universidad de Alicante
Antonio Chica, Universitat Politècnica de Catalunya Ibón Guillén, Universidad de Zaragoza
Acosta, Diego A. . . 31
Acosta, Oscar Mauricio Betancur . . . 69
Alvarado, Lidia Ortega . . . 81, 93 Andujar, Carlos . . . 89
Anguita, Carlos Javier Ogayar . . . 85
Besuievsky, Gonzalo . . . 9, 59 Cadavid, Carlos . . . 69
Calaf, Antonio Chica . . . 51
Calvo, Santiago . . . 25
Corcho, Juan Camilo Pareja . . . 69
Díaz, Miguel . . . 73
Epelde, Gorka . . . 1
Fita, Josep Lluis . . . 59
Fuertes, José Manuel . . . 73
Galí, Carlos . . . 77
García-Fernández, Ignacio . . . 19
Gran, Carlos Andújar . . . 51
Gutierrez, Diego . . . 25
Higueruela, Francisco . . . 81, 85, 93 Lalinde-Pulido, Juan . . . 41
Leškovský, Peter . . . 1
Lucena, Manuel . . . 73
Martínez-Durá, Rafael J. . . 19
Martínez-Gil, Francisco . . . 19
Masia, Belen . . . 25
Mejia-Parra, Daniel . . . 41
Merino, Sara . . . 1
Montoya-Zapata, Diego . . . 31
Moreno, Aitor . . . 31
Mujika, Andoni . . . 1
Novoa, David Muñoz . . . 9
Nuria, Pelechano . . . 97
Ogáyar, Carlos Javier . . . 73
Otaduy, Miguel Angel . . . 1
Oyarzun, David . . . 1
Patow, Gustavo A. . . 9, 59, 89 Posada, Jorge . . . 31, 41 Rando, Eduard . . . 89
Real, Pablo . . . 19
Rebollo, Cristina . . . 77
Remolar, Inmaculada . . . 77
Rios, Alex . . . 97
Rodríguez, David Jurado . . . 81
Rodríguez, Juan Manuel Jurado . . . 81, 85 Ruiz, Alfonso López . . . 85
Ruiz, José Luis López . . . 93
Ruiz, Oscar E. . . 69
Ruiz-Salguero, Oscar . . . 31, 41 Salvetti, Isadora . . . 97
Sánchez, Jairo R. . . 41
Serrano, Ana . . . 25
Trinidad, Marc Comino . . . 51
