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1. The Influence of a Prop Mass on Task Performance in Virtual Reality Thomesse, Lucas, Cauquis, Julien, Peillard, Etienne, Dominjon, Lionel, Duval, Thierry, and Moreau, Guillaume In International Conference on Artificial Reality and Telexistence - Eurographics Symposium on Virtual Environments 2024 [Abs] [pdf]

   As Virtual Reality (VR) applications continue to develop further, many questions persist regarding how to optimize user performance in virtual environments. Among the numerous variables that could influence performance, the mass of the props used within VR applications is particularly noteworthy. This paper thus proposes a user study to investigate the influence of the mass of a prop (a tool replica) on users’ performance in a pointing task. A VR within-subject experiment was conducted, with three different weighted replicas, to collect objective and subjective data from participants. Results suggest that the mass of the prop can influence task performance in terms of error-free selection time, number of errors, and subjective perceptions such as perceived difficulty and cognitive load. Indeed, performance was significantly better when using a lighter replica than a heavier one, and subjective user-experience-related metrics were also significantly improved with a light replica. These results help pave the way for additional research on user performance within virtual environments.

2. What about the real use of virtual, extended and augmented reality? a survey of a French representative sample Burkhardt, Jean-Marie, Attia, Dina, Behar-Cohen, Francine, Grynszpan, Ouriel, Klinger, Evelyne, Lobjois, Régis, Moreau, Guillaume, Nannipieri, Olivier, Paljic, Alexis, Piolino, Pascale, Hung, Thai-Van, Tisseron, Serge, and Viaud-Delmon, Isabelle In 15th International Conference on Applied Human Factors and Ergonomics (AHFE 2024) 2024 [Abs] [pdf]

   Literature provides few if no data on the current use and exposure of individuals to virtual reality (VR) and/or augmented reality (AR) technologies in the wild. Most of the publications concern prototypes and systems tested in laboratories, whereas actual uses in private and professional situations are poorly documented. Obtaining a clear picture of the current use and exposure to VR/A/M technologies is thus difficult, beyond high-profile applications (e.g. Pokemon GO) and devices (e.g. Oculus rift). To address this gap, a survey was conducted in the context of a working group at the French Agency for Food, Environmental and Occupational Health & Safety (ANSES) among a sample of 776 French people aged 18 and over who have already experienced virtual or augmented reality (from a representative national sample of 2970 French people aged 18 and over) and 122 children aged 6 to 17 who have already experienced virtual or augmented reality. The online questionnaire was designed to identify the people concerned and the situations of exposure to these technologies, the type of systems and devices used, as well as to examine the possible occurrence of cyber-sickness symptoms felt after or during exposure. Beyond the lack of previous studies, a specific difficulty and limit to interpreting previous surveys lies in the emerging nature of the technologies under consideration, i.e. the fact that they are evolving technologies, still little known and/or poorly understood (especially for the general population) and responding to uses and needs that are still incompletely identified. Thus, the study’s instructions relied on a precise definition of VR/AR combined with typical illustrations of the different types of devices and uses presented in the questionnaire. The results show that 26% of French people aged 18 and over have already experienced virtual or augmented reality, whereas 33% of French people with children between the ages of 6 and 17 report that their children have already experienced VR/AR. Characteristics of the users population, situations and duration of use, as well as devices mostly used are clarified. In terms of health consequences, between one-third and one-half of users report having experienced symptoms during or following expo- sure to VR or AR, depending on how the measurement is conducted. The most common self-reported symptoms are dizziness and headache. Symptoms mainly appear during or immediately after exposure and disappear very quickly afterwards, with the exception of headaches and visual fatigue, which seem to persist more over time. The types of use and technologies used seem to be determining factors in the occurrence of symptoms. The conclusion set perspectives to recommendations.

3. Manipulating the Sense of Embodiment in Virtual Reality: a study of the interactions between the senses of agency, self-location and ownership Guy, Martin, Jeunet-Kelway, Camille, Normand, Jean-Marie, and Moreau, Guillaume In ICAT-EGVE2022, the joint international conference of the 32nd International Conference on Artificial Reality and Telexistence & the 27th Eurographics Symposium on Virtual Environments 2022 [Abs] [pdf]

   In Virtual Reality (VR), the Sense of Embodiment (SoE) corresponds to the feeling of controlling and owning a virtual body, usually referred to as an avatar. The SoE is generally divided into three components: the Sense of Agency (SoA) which characterises the level of control of the user over the avatar, the Sense of Self-Location (SoSL) which is the feeling to be located in the avatar and the Sense of Body-Ownership (SoBO) that represents the attribution of the virtual body to the user. While previous studies showed that the SoE can be manipulated by disturbing either the SoA, the SoBO or the SoSL, the relationships and interactions between these three components still remain unclear. In this paper, we aim at extending the understanding of the SoE and the interactions between its components by 1) experimentally manipulating them in VR via a biased visual feedback, and 2) understanding if each sub-component can be selectively altered or not. To do so, we designed a within-subject experiment where 47 right-handed participants had to perform movements of their right-hand under different experimental conditions impacting the sub-components of embodiment: the SoA was modified by impacting the control of the avatar with visual biased feedback, the SoBO was altered by modifying the realism of the virtual right hand (anthropomorphic cartoon hand or non-anthropomorphic stick “fingers”) and the SoSL was controlled via the user’s point of view (first or third person). After each trial, participants rated their level of agency, ownership and self-location on a 7-item Likert scale. Results’ analysis revealed that the three components could not be selectively altered in this experiment. Nevertheless, these preliminary results pave the way to further studies.

4. Virtual Data Sphere: Inverse Stereographic Projection for Immersive Multi-Perspective Geovisualization Spur, Maxim, Tourre, Vincent, Moreau, Guillaume, and Le Callet, Patrick In ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences 2022 [Abs] [pdf]

   Immersive geospatial visualization finds increasing application for navigation, exploration, and analysis. Many such require the display of data at different scales, often in views with three-dimensional geometry. Multi-view solutions, such as focus+context, overview+detail, and distorted projections can show different scales at the same time, and help place an area of interest within its surroundings. By inverting the principle of stereographic projection – projecting spatial features from a map onto a virtual sphere which surrounds the viewer – we present a novel technique for immersive geospatial focus+context that aims to mitigate problems with existing solutions. This sphere can intersect the map, dividing it into two parts: the inside of the sphere, which stays unchanged, and the outside, which gets projected to the surface, resulting in an inversion of the lens metaphor by distorting the context instead of the focus. This detail-in-context visualization maximizes the amount of context that can be legibly shown by the smooth compression inherent to the stereographic projection, and by utilizing otherwise unused screen space in the sky. The projection method allows for easy control over the projection and distortion characteristics by varying only two main parameters – the sphere’s radius and its position. The omnidirectional nature of our system makes it particularly well-suited for immersive displays by accommodating typical immersive exploration and fully utilizing the additional visual space available. Applying our system to an urban environment, we were able to solicit positive reactions during feedback sessions with experts from urbanism.

5. [ISMAR]
   Can Retinal Projection Displays Improve Spatial Perception in Augmented Reality? Peillard, Etienne, Itoh, Yuta, Normand, Jean-Marie, Argelaguet, Ferran, Moreau, Guillaume, and Lécuyer, Anatole In IEEE International Symposium on Mixed and Augmented Reality (ISMAR) 2020 [pdf]
6. [ISMAR]
   Perception of Multisensory Wind Representation in Virtual Reality Giraldo, Gabriel, Servières, Myriam, and Moreau, Guillaume In IEEE International Symposium on Mixed and Augmented Reality (ISMAR) 2020 [pdf]
7. MapStack: Exploring Multilayered Geospatial Data in Virtual Reality Spur, Maxim, Tourre, Vincent, David, Erwan, Moreau, Guillaume, and Le Callet, Patrick In Proc. 11th International Conference on Information Visualization Theory and Applications 2020 [Abs] [pdf]

   Virtual reality (VR) headsets offer a large and immersive workspace for displaying visualizations with stereoscopic vision, compared to traditional environments with monitors or printouts. The controllers for these devices further allow direct three-dimensional interaction with the virtual environment. In this paper, we make use of these advantages to implement a novel multiple and coordinated view (MCV) in the form of a vertical stack, showing tilted layers of geospatial data to facilitate an understanding of multi-layered maps. A formal study based on a use-case from urbanism that requires cross-referencing four layers of geospatial urban data augments our arguments for it by comparing it to more conventional systems similarly implemented in VR: a simpler grid of layers, and switching (blitting) layers on one map. Performance and oculometric analyses showed an advantage of the two spatial-multiplexing methods (the grid or the stack) over the temporal multiplexing in blitting. Overall, users tended to prefer the stack, be ambivalent to the grid, and show dislike for the blitting map. Perhaps more interestingly, we were also able to associate preferences in systems with user characteristics and behavior.

8. [ISMAR]
   Studying Exocentric Distance Perception in Optical See-Through Augmented Reality Peillard, Etienne, Argelaguet, Ferran, Normand, Jean-Marie, Lécuyer, Anatole, and Moreau, Guillaume In IEEE International Symposium on Mixed and Augmented Reality (ISMAR) 2019 [doi] [pdf]
9. [VR]
   Virtual objects look farther on the sides: the anisotropy of distance perception in virtual reality Peillard, Etienne, Thébaud, Thomas, Normand, Jean-Marie, Argelaguet, Ferran, Moreau, Guillaume, and Lécuyer, Anatole In IEEE Virtual Reality 2019 [Abs] [doi] [pdf]

   The topic of distance perception has been widely investigated in Virtual Reality (VR). However, the vast majority of previous work mainly focused on distance perception of objects placed in front of the observer. Then, what happens when the observer looks on the side? In this paper, we study differences in distance estimation when comparing objects placed in front of the observer with objects placed on his side. Through a series of four experiments (n=85), we assessed participants’ distance estimation and ruled out potential biases. In particular, we considered the placement of visual stimuli in the field of view, users’ exploration behavior as well as the presence of depth cues. For all experiments a two-alternative forced choice (2AFC) standardized psychophysical protocol was employed, in which the main task was to determine the stimuli that seemed to be the farthest one. In summary, our results showed that the orientation of virtual stimuli with respect to the user introduces a distance perception bias: objects placed on the sides are systematically perceived farther away than objects in front. In addition, we could observe that this bias increases along with the angle, and appears to be independent of both the position of the object in the field of view as well as the quality of the virtual scene. This work sheds a new light on one of the specificities of VR environments regarding the wider subject of visual space theory. Our study paves the way for future experiments evaluating the anisotropy of distance perception in real and virtual environments.

10. Ecosystème de représentations et apprentissage de la conception Milovanovic, Julie, Siret, Daniel, Moreau, Guillaume, and Miguet, Francis In Proceedings SCAN’18 - 8ème Séminaire de Conception Architecturale Numérique 2018 [doi]
11. Representational Ecosystems in Architectural Design Studio Critique: Do changes in the representational ecosystem affect tutors and students behaviors during design critiques? Milovanovic, Julie, Siret, Daniel, Moreau, Guillaume, and Miguet, Francis In Proceedings of the 36th eCAADe Conference 2018
12. Evaluation of Facial Expressions as an Interaction Mechanism and their Impact on Affect, Workload and Usability in an AR game Transon, Alan, Verhulst, Adrien, Normand, Jean-Marie, Moreau, Guillaume, and Sugimoto, Maki In 23rd International Conference on Virtual Systems and Multimedia 2017
13. Generation of variability in shape, aspect and time of 3D Fruits and Vegetables Verhulst, Adrien, Normand, Jean-Marie, and Moreau, Guillaume In 23rd International Conference on Virtual Systems and Multimedia 2017
14. Enhancing design representational environment to support design learning in the studios Milovanovic, Julie, Siret, Daniel, Moreau, Guillaume, and Miguet, Francis In 13th Biennial International Conference of the European Architectural Envisioning Association 2017
15. A geographic data gathering system for image geolocalization refining Semaan, Bernard, Servières, Myriam, Moreau, Guillaume, and Chebaro, Bilal In 2nd SDSC Conference 2017
16. Virtual and Augmented Reality in architectural design and education Milovanovic, Julie, Moreau, Guillaume, Siret, Daniel, and Miguet, Francis In CAADs Future 2017
17. A Study of Virtual Visual Servoing Sensitivity in the Context of Image/GIS Registration for Urban Environments Wei, Hengyang, Pressigout, Muriel, Servières, Myriam, Morin, Luce, and Moreau, Guillaume In Machine Vision Applications 2017 [doi]
18. A study on the use of an immersive Virtual Reality store to investigate consumer perceptions and purchase behavior toward non standard fruits and vegetables Verhulst, Adrien, Normand, Jean-Marie, Lombart, Cindy, and Moreau, Guillaume In IEEE Virtual Reality 2017 [doi]
19. Deux techniques uni-manuelles de manipulation avec contraintes pour la modélisation 3D sur TabletPC Wu, Siju, Ricca, Aylen, Chellali, Amine, Otmane, Samir, and Moreau, Guillaume In Actes de la 28ième conférence francophone sur l’Interaction Homme-Machine 2016
20. Real-time surface of revolution reconstruction on dense SLAM Yang, Liming, Uchiyama, Hideaki, Normand, Jean-Marie, Moreau, Guillaume, Nagahara, Hajime, and Taniguchi, Rin-ichiro In International Conference on 3D Vision 2016 [doi]
21. Practical and precise projector-camera calibration Yang, Liming, Normand, Jean-Marie, and Moreau, Guillaume In IEEE International Symposium on Mixed and Augmented Reality (ISMAR) 2016 [doi]
22. LayerStroke: a Layer based Selector for Small Target Acquisition Wu, Siju, Chellali, Amine, Otmane, Samir, and Moreau, Guillaume In 27ème conférence francophone sur l’Interaction Homme-Machine (IHM-2015) 2015
23. TouchSketch: a touch-based interface for 3D object manipulation and editing Wu, Siju, Otmane, Samir, Chellali, Amine, and Moreau, Guillaume In ACM Virtual Reality Software and Technology 2015 [doi]
24. Geolocation for Printed Maps Using Line Segment-Based SIFT-like Feature Matching Minster, Gautier, Moreau, Guillaume, and Saito, Hideo In ISMAR 2015 workshop on Challenges and Applications of Urban Augmented Reality 2015 [doi]
25. Visually-Realistic Appearance Changes of Fruits and Vegetables using Particle Systems Verhulst, Adrien, Normand, Jean-Marie, and Moreau, Guillaume In Computer Graphics Interface 2015
26. Towards the effective use of available educational resources : Designing Adaptive Hypermedia Environments for the Engineering Sciences Carolan, Simon, Moreau, Guillaume, Magnin, Morgan, and Chinesta, Francisco In IEEE International Conference on Advanced Learning Technologies (ICALT 2015) 2015
27. [ISMAR]
    Local Geometric Consensus: a general purpose point pattern-based tracking algorithm Yang, Liming, Normand, Jean-Marie, and Moreau, Guillaume In ISMAR 2015 2015 [doi] [pdf]
28. Impact of Visual Cues on Climate Perception in Virtual Urban Environments: A User Study Vigier, Toinon, Moreau, Guillaume, and Siret, Daniel In BuiltViz’15 2015
29. Augmenting off-the-shelf paper maps using intersection detection and Geographical Information Systems Yang, Liming, Normand, Jean-Marie, and Moreau, Guillaume In IAPR Conference on Machine Vision Application 2015
30. HorizontalDragger: a Freehand Remote Selector for Object Acquisition Wu, Siju, Chellali, Amine, Otmane, Samir, and Moreau, Guillaume In IEEE Virtual Reality 2015
31. From visual cues to climate perception in virtual urban environments Vigier, Toinon, Moreau, Guillaume, and Siret, Daniel In Proc. IEEE Virtual Reality (poster) 2015
32. Extracting domain ontologies from reference books Carolan, Simon, Chinesta, Francisco, Evain, Christine, Magnin, Morgan, and Moreau, Guillaume In IEEE International Conference on Advanced Learning Technologies 2014 [pdf]
33. Using existent metrics to evaluate a text-based 3D information visualization Zhang, Fan, Tourre, Vincent, and Moreau, Guillaume In WSCG, 22nd International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2014 [pdf]
34. Robust Random Dot Markers: towards augmented unprepared maps with pure geographic features Yang, Liming, Normand, Jean-Marie, and Moreau, Guillaume In ACM Virtual Reality Software and Technology 2014 [doi]
35. Applying LoD and perceptive effects to 3D urban semantics visualization Zhang, Fan, Tourre, Vincent, and Moreau, Guillaume In Eurographics Workshop on Urban Data Modelling and Visualization 2014
36. Video/GIS registration system based on skyline matching method Zhu, Shupeng, Morin, Luce, Pressigout, Muriel, Moreau, Guillaume, and Servières, Myriam In IEEE International Conference on Image Processing 2013 [doi]
37. Visual immersion issues in Virtual Reality: a survey Moreau, Guillaume In SIBGRAPI Tutorial 2013 [doi]
38. Feeling the urban project: the use of virtual reality for a perceptual approach of the urban space Vigier, Toinon, Moreau, Guillaume, Lescop, Laurent, and Siret, Daniel In 2013 European Architectural Envisioning Association (EAEA) 11th Conference 2013
39. Analysis of virtualization as a solution to VR-system mutualization Normand, Jean-Marie, Milliat, Aurélien, Christie, Marc, Picarougne, Fabien, and Moreau, Guillaume In International Conference on Artificial Reality and Telexistence (poster) 2013
40. Sensitive Suggestion and Perception of Climatic Effects in Virtual Urban Environments Vigier, Toinon, Moreau, Guillaume, Siret, Daniel, and Lescop, Laurent In International Conference on Artificial Reality and Telexistence (poster) 2013
41. Sensitive suggestion and perception of climatic effects in virtual urban environments Vigier, Toinon, Moreau, Guillaume, Siret, Daniel, and Lescop, Laurent In ACM Sympusium on Applied Perception 2013 [pdf]
42. Design of a Visual Query Language for Geographic Information System on a Touch Screen Wu, Siju, Otmane, Samir, Moreau, Guillaume, and Servières, Myriam In HCI International 2013 2013
43. Towards augmented learning in science and engineering in higher education Carolan, Simon, Chinesta, Francisco, Evain, Christine, Magnin, Morgan, and Moreau, Guillaume In IEEE International Conference on Advanced Learning Technologies 2013
44. A General Strategy for Semantic Levels of Details in 3D Urban Visualization Zhang, Fan, Tourre, Vincent, and Moreau, Guillaume In Eurographics Workshop On Urban Data Modelling And Visualisation 2013 [Abs] [doi]

    Applications based on urban environments are applied frequently in daily life which increases the needs for a high quality visualization result. It combines the urban environment and the special application-related topic together. The urban environment can be visualized with different scales, namely with different levels of detail to improve rendering and processing performance of the application. Visualization for the special topic, semantics, similarly is in need of a smart strategy to stay consistent with information density. This paper proposes a general strategy to handle semantic levels of detail visualization in urban environment. An example is given to illustrate how it is applied. Later, a mapping between urban environment levels of detail and semantic levels of detail is discussed. In the last part, the limitations of the general strategy are stated. And visualization issues for semantics are listed such as the proper visualization form and technique for a given semantic level of detail. This paper aims to bring about a wider discussion on semantic levels of detail visualization in urban environment.

45. Semantic visualisation in 3D urban environment: taking text as an example Zhang, Fan, Tourre, Vincent, and Moreau, Guillaume In 4th International Conference on Information Visualization Theory and Applications 2013
46. DoF-based Classification of Augmented Reality Applications Normand, Jean-Marie, and Moreau, Guillaume In ISMAR workshop "Classifying the AR Presentation Space" 2012
47. Une méthode d’estimation du temps de parcours : application de recherche d’itinéraires dans un contexte d’urgence Soussi, Mohamed, Follin, Jean-Michel, Moreau, Guillaume, Bouju, Alain, and Polidori, Laurent In Sagéo 2012 2012
48. Sensory representations of urban environments in virtual reality: Towards the suggestion of virtual microclimatic ambiances Vigier, Toinon, Siret, Daniel, Moreau, Guillaume, and Lescop, Laurent In 2nd International Congress on Ambiances 2012
49. Skyline matching: a robust registration method between video and GIS Zhu, Shupeng, Pressigout, Muriel, Morin, Luce, and Moreau, Guillaume In 3U3D 2012: Usage, Usability and Utility of 3D City Models 2012 [doi]
50. Developing an ontology of space: application to 3D city modeling Billen, Roland, Zaki, Chams-Eddine, Servières, Myriam, Moreau, Guillaume, and Hallot, Pierre In 3U3D 2012: Usage, Usability and Utility of 3D City Models 2012
51. All range and heterogeneous multi-scale 3D city models He, Shuang, Besuievsky, Gonzalo, Patow, Gustavo, Tourre, Vincent, and Moreau, Guillaume In 3U3D 2012: Usage, Usability and Utility of 3D City Models 2012
52. A new concept of perceptual fidelity to augment virtual urban environments with microclimatic ambiances Vigier, Toinon, Moreau, Guillaume, Siret, Daniel, and Lescop, Laurent In 3U3D 2012: Usage, Usability and Utility of 3D City Models 2012
53. Markus, an open-source web application to annotate students paper on-line Magnin, Morgan, Moreau, Guillaume, Varoquaux, Nelle, Vialle, Benjamin, Reid, Karen, Conley, Mike, and Gehwolf, Severin In ESDA 2012 2012
54. Design of 3D buildings to update a GIS Liu, Ruijun, Servières, Myriam, and Moreau, Guillaume In ESDA 2012 2012
55. A functional typology of augmented reality applications based on their tracking requirements Normand, Jean-Marie, Servières, Myriam, and Moreau, Guillaume In LAMDa workshop 2012
56. Towards urban fabrics characterization based on buildings footprints Hamaina, Rachid, Leduc, Thomas, and Moreau, Guillaume In Agile 2012 2012 [doi]
57. A new typology of augmented reality applications Normand, Jean-Marie, Servières, Myriam, and Moreau, Guillaume In ACM Augmented Human 2012 [doi]
58. A GIS Data updating method with video Liu, Ruijun, Servières, Myriam, and Moreau, Guillaume In GRAPP 2012 2012
59. Footprint based generalization of building groups for virtual city visualization He, Shuang, Moreau, Guillaume, and Martin, Jean-Yves In GeoProcessing 2012, The Fourth International Conference on Advanced Geographic Information Systems, Applications, and Services 2012
60. Implementing conceptual spatiotemporal model into Object DBMS with semantic preserving Zaki, Chamseddine, Servières, Myriam, and Moreau, Guillaume In IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services 2011 [doi]
61. Transforming conceptual spatiotemporal model into Object model with semantic keeping Zaki, Chamseddine, Servières, Myriam, and Moreau, Guillaume In 5th International workshop on Semantic and Conceptual Issues in GIS (SeCoGis 2011) 2011 [doi]
62. La professionnalisation des étudiants en informatique par les projets libres Magnin, Morgan, and Moreau, Guillaume In Proc. Questions de pédagogie dans l’enseignement supérieur 2011
63. Facades Modeling from a Ground-View Video with Map constraints Liu, Ruijun, Servières, Myriam, and Moreau, Guillaume In IAPR Conference on Machine Vision Application 2011
64. A structural analysis of the street network to urban fabric characterization Hamaina, Rachid, Leduc, Thomas, and Moreau, Guillaume In International Cartographic Conference 2011
65. Caractérisation des tissus urbains à partir de l’analyse structurelle des réseaux de rues Hamaina, Rachid, Leduc, Thomas, and Moreau, Guillaume In Journées du GDR Modys 2010
66. 3D-GIS from Images and Map Constraints in an AR Context: A review of Architecture Modeling from Images or Video Liu, Ruijun, Servières, Myriam, and Moreau, Guillaume In Journées de l’Association Française de Réalité Virtuelle 2010
67. Event-based semantic visualization of trajectory data in urban city with a space-time cube Event-based semantic visualization of trajectory data in urban city with a space-time cube Event-based semantic visualization of trajectory data in urban city with a space-time cube Zhong, Chen, Zaki, Chamseddine, Tourre, Vincent, and Moreau, Guillaume In Advances in Visualization, Imaging and Simulation 2010
68. Retour sur l’usage de Tablets PC à l’Ecole Centrale de Nantes : autonomie et initiatives Magnin, Morgan, and Moreau, Guillaume In TICE 2010 2010
69. Diffuser les bonnes pratiques autour de l’usage des blogs en pédagogie Evain, Christine, Magnin, Morgan, and Moreau, Guillaume In TICE 2010 2010
70. Utilisation des tests de concordance de scripts pour l’évaluation en informatique Magnin, Morgan, and Moreau, Guillaume In TICE 2010 2010
71. Towards outdoor localization from GIS data and 3D content extracted from videos Bioret, Nicolas, Moreau, Guillaume, and Servières, Myriam In IEEE ISIE special session on Emerging Technologies 2010 [doi]
72. Real time comfort enhancement in stereoscopic displays by disparity and content-adapted blur Leroy, Laure, Fuchs, Philippe, and Moreau, Guillaume In IEEE ISIE special session on Emerging Technoloy 2010 [doi]
73. Urban spatiotemporal data-modeling: application to the study of pedestrian walkways Zaki, Chams-Eddine, Zekri, Elyes, Servières, Myriam, Moreau, Guillaume, and Hégron, Gérard In Advances in Intelligent Decision Technologies 2010 [doi]
74. Urban Localization based on Correspondences between Street Photographs and 2D Building GIS Layer Bioret, Nicolas, Moreau, Guillaume, and Servières, Myriam In CORESA, session spéciale "Géolocalisation", Toulouse, France 2009
75. Pose computation based on Correspondence between 2D GIS and Street Images Bioret, Nicolas, Moreau, Guillaume, and Servières, Myriam In 2nd Mediterranean Conference on Intelligent Systems and Automation, Zarzis, Tunisie 2009
76. An immersive, multisensory and interactive approach for landscape study in virtual environments: the wind turbines’ case Jallouli, Jihen, and Moreau, Guillaume In Innovations for building and construction (12th EuropIA Conference Proceedings) 2009
77. Some experiments about shape perception in stereoscopic displays Leroy, Laure, Fuchs, Philippe, and Moreau, Guillaume In Stereo Displays and Applications 2009 [doi] [pdf]
78. Change Detection Based on SURF and Color Edge Matching Mitsumori, Ryo, Uchiyama, Hideaki, Saito, Hideo, Servières, Myriam, and Moreau, Guillaume In International Workshop on Vision and Control for Access Space, ACCV workshop 2009
79. Augmented Reality and Urban GIS: towards closing the loop between acquisition and visualization of geographical data Moreau, Guillaume In Geovizualisation workshop 2009
80. AR-based GIS: Towards closing the loop between acquisition and visualization of geographical data Moreau, Guillaume, Servières, Myriam, and Saito, Hideo In ISMAR workshop "Let’s Go Out: Research in Outdoor Mixed and Augmented Reality" 2009
81. Communiquer l’environnement par la réalité virtuelle : la perception de l’espace urbain Tahrani, Souha, and Moreau, Guillaume In CAAD Futures 2009
82. MapBook AiR: AR City Representation System on a Physical Map using Topological Information Uchiyama, Hideaki, Saito, Hideo, Nivesse, Vivien, Servières, Myriam, and Moreau, Guillaume In The 3rd Pacific-Rim Symposium on Image and Video Technology (PSIVT2009), Tokyo, Japon 2009
83. AR City Representation System based on Map Recognition using Topological Information Uchiyama, Hideaki, Saito, Hideo, Servières, Myriam, and Moreau, Guillaume In Virtual and Mixed Reality, Third International Conference, VMR 2009, Held as Part of HCI International 2009 2009 [doi]
84. AR GIS on a Physical Map based on Map Image Retrieval using LLAH Tracking Uchiyama, Hideaki, Saito, Hideo, Servières, Myriam, and Moreau, Guillaume In IAPR Conference on Machine Vision Application 2009
85. Image Based View Localization System Retrieving from a Panorama Database by SURF Yazawa, Naoyuki, Uchiyama, Hideaki, Saito, Hideo, Servières, Myriam, and Moreau, Guillaume In IAPR Conference on Machine Vision Application 2009
86. Using Conceptual and Ontological Models for Tracking Changes of Spatio-Temporal Objects and Concepts over Time Zaki, Chamseddine, Servières, Myriam, and Moreau, Guillaume In Agile (poster) 2009
87. Combining Conceptual and Ontological Models for Representing Spatio-Temporal Data and Semantic Evolution in GIS Zaki, Chamseddine, ServiŽères, Myriam, and Moreau, Guillaume In Ontologies for urban development: Future development of urban ontologies 2009
88. Géolocalisation à partir d’images en environnement urbain en s’appuyant sur un SIG 2D Bioret, Nicolas, Moreau, Guillaume, and Servières, Myriam In 3èmes journées de l’Association Française de Réalité Virtuelle, Bordeaux, 30-31 octobre 2008 2008
89. Outdoor Localization based on image/GIS correspondence using a simple 2D building layer Bioret, Nicolas, Servières, Myriam, and Moreau, Guillaume In 2nd International Workshop on Mobile Geospatial Augmented Reality 2008
90. urbSAT: from spatial SQL to urban indicators Bocher, Erwan, Leduc, Thomas, Long, Nathalie, Cortés, Fernando Gonzalez, and Moreau, Guillaume In FOSS4G 2008 2008 [Abs]

    At present, more than a half of the world population is living in urban areas. Therefore urbanization control has become a major issue. Among the social, economical and ecological factors that are taken into account in decision-making, environmental issues now have a greater impact. To address these issues, researchers are faced with new problems among which are tool disparity, knowledge sharing and enhancement (both for data and methods). What data usually have in common is a geographic reference. We propose a common localized semantics for these tools as well as a workflow to allow data integration. We will also try to show to what extent our infrastructure and tools will be an asset to integrate knowledge production methods in order to combine research works altogether. We are especially seeking the integration of multi-disciplinary research works to provide urban management authorities with new indicators. Beyond the strict field set of practices, themes and disciplins, we aim to set up and deploy a common semantic and the corresponding framework. This common and shared basis will provide all researchers the ability to produce complex indicators using knowledge of several different disciplines. The Spatial Data Infrastructure is a way to define best practices and guidelines for process integration and product improvement. It provides an opportunity to avoid or eliminate all the barriers through integrated models that transcend disciplines.

91. GDMS: An abstraction layer to enhance Spatial Data Infrastructures usability Bocher, Erwan, Leduc, Thomas, Moreau, Guillaume, and Cortès, Fernando González In Agile 2008 2008 [Abs]

    The practical exploitation of SDI (Spatial Data Infrastructures) raises number of issues as far as it grows. Among them is the heterogeneity of data sources and thus the difficulty for GIS users not to depend on the data source format and of course to learn different systems. This a major flaw with respect to reuse and data sharing. The purpose of our work is to propose a new semantic layer derived from the SQL language that is independent of the underlying data source. This layer, called GDMS (Generic Data source Management System) can first be seen as an abstraction layer between data sources and the SDI tools. We will also show how this layer extends both SQL and spatial semantics and improves the exploitation of the SDI, by providing feedback both in terms of work and data reuse. A simple example mixing heterogeneous data sources will be presented.

92. Wind turbines landscapes: using virtual reality for the assessment of multisensory perception in motion Jallouli, Jihen, Moreau, Guillaume, and Querrec, Ronan In ACM Virtual Reality Software and Technology (poster) 2008 [doi]
93. Free versus constrained motion for assessing wind turbines’ impacts on landscape in virtual environments Jallouli, Jihen, Moreau, Guillaume, and Salerne, Davy In International Conference on Articificial Reality and Telexistence (poster) 2008 [Abs]

    Wind turbines (WT) are socially controversial because of their visual and acoustic impacts on landscape. The studies’ limits remain on one hand, the technical and objective point of view for subjective impacts; and on the other hand the separate study of visual and acoustic aspects when landscape is multisensory. Virtual reality (VR) is here proposed - thanks to immersion and interaction potentialities - as an immersive multisensory and dynamic approach in order to assess WT impacts. For that, a comparison between a real park and the same virtual one is needed to evaluate VR for landscape impacts’ restitution. The parks are evaluated using an immersive path-based method (perception in motion): the real walking is simulated in a first experiment by a Wiimote. As results show the limits of this device, a second experiment using a very low-cost instrumented bike has been setup.

94. Study of stereoscopic shape perception for virtual design Leroy, Laure, Fuchs, Philippe, Paljic, Alexis, and Moreau, Guillaume In International Conference on Artificial Reality and Telexistence 2008
95. Sensitivity of spatial indicators for urban terrain characterization Long, Nathalie, Bocher, Erwan, Leduc, Thomas, and Moreau, Guillaume In IEEE International Geoscience and Remote Sensing Symposium 2008
96. AR representation system for 3D GIS based on camera pose estimation using distribution of intersections Uchiyama, Hideaki, Saito, Hideo, Nivesse, Vivien, Servières, Myriam, and Moreau, Guillaume In International Conference on Artificial Reality and Telexistence 2008
97. AR representation system for 3D GIS based on camera pose estimation using distribution of intersections Uchiyama, Hideaki, Saito, Hideo, Nivesse, Vivien, Servières, Myriam, and Moreau, Guillaume In 3èmes journées de l’Association Française de Réalité Virtuelle, Bordeaux, 30-31 octobre 2008 2008
98. AR Mapping of GIS Information by Pattern-based Tracking with Particle Filter Uematsu, Yuko, Saito, Hideo, Servières, Myriam, and Moreau, Guillaume In International Conference on Artificial Reality and Telexistence 2008
99. An ontology-based model for representing evolution of both data and semantic in GIS Zaki, Chamseddine, Servières, Myriam, and Moreau, Guillaume In GI Days 2008 [pdf]
100. Amélioration des images stéréoscopiques Leroy, Laure, Fuchs, Philippe, and Moreau, Guillaume In 2èmes journées de l’Association Française de Réalité Virtuelle 2007
101. Analyzing urban daylighting ambiences by walking in a virtual city Tahrani, Souha, and Moreau, Guillaume In Proc. IEEE Virtual Reality Conf. VR ’07 2007 [doi]
102. Automatic 3D Roof Reconstruction using Digital Cadastral Map, Architectural Knowledge and an Aerial Image Bertan, Emre, Gökmen, Muhittin, and Moreau, Guillaume In IEEE International Geoscience and Remote Sensing Symposium (IGARSS’06) 2006
103. La réalité virtuelle comme outil d’étude sensible du paysage : le cas des éoliennes Jallouli, Jihen, and Moreau, Guillaume In 1ères journées de l’Association Française de Réalité Virtuelle 2006
104. Détection entièrement automatique de points de fuite dans des scènes architecturales urbaines Kalantari, Mahzad, Guédon, Jean-Pierre, Jung, Franck, and Moreau, Guillaume In CORESA 2006 [Abs] [pdf]

     L’imagerie de la Ville doit être compréhensible facilement à partir d’acquisition d’images sans autre appareillage afin de fournir les éléments propre à chaque bâtiment. Pour cela, il est présenté une nouvelle méthode de détection de points de fuite complètement automatique, robuste et de complexité réduite vis à vis des algorithmes classiques. La méthode proposée tient en deux étapes : une détection de segments par un algorithme de Canny-Deriche modifié suivi d’une caractérisation de chacun des segments par leur appartenance à un cercle spécifique de l’espace original en utilisant un résultat de la géométrie projective. La bonne performance en termes de robustesse se double donc d’une réduction de complexité puisque l’ensemble du processus est réalisé en 2D sans aucune aide externe.

105. Analyzing urban daylighting ambiences by walking in a virtual city Tahrani, Souha, Moreau, Guillaume, and Woloszyn, Philippe In 1ères journées de l’Association Française de Réalité Virtuelle 2006
106. Towards a Virtual Reality Tool for Lighting Communication and Analysis in Urban Environments Tahrani, Souha, Jallouli, Jihen, Moreau, Guillaume, and Woloszyn, Philippe In CAADS Future 2005 2005 [Abs] [doi]

     The objective of this paper is to evaluate the use of virtual reality as a potential decision-making tool to cognitively evaluate urban daylighting ambiences. This paper evaluates the solar effects visual perception in a real urban path in comparison to a virtual urban path in order to extract the characteristics of these effects and use them to figure out the necessary conditions for generating a physical and sensitive phenomena simulation. The comparison is based on questionnaires and interviews with participants on their judgements on sunlight during their walk through the chosen path. Our results highlight the relation between perception and the context of the urban environment , and prove that -in spite of its limits- virtual reality is able to simulate a large part of real solar effects.

107. Assessing the use of Virtual Reality in Daylighting ambiences Design: A case study Tahrani, Souha, Moreau, Guillaume, and Woloszyn, Philippe In Virtual Concept 2005 2005
108. A comparative study in using Virtual Environments for Urban daylight analysis Tahrani, Souha, Moreau, Guillaume, and Woloszyn, Philippe In Augmented heritage : new era for Architectural Design, Civil Engineering and Urban Planning. 10th EuropIA International Conference on the application of Artificial Intelligence, robotics and image processing to architecture, civil engineering & urban planning 2005 [Abs]

     This paper discusses the use of Virtual environments (VEs) in cognitive evaluation of daylighting ambiences. We will introduce Virtual Reality as a new tool for urban planning development. This paper evaluates the degree of solar effects representation in digital models as well as the role of immersion in environmental evaluation. We attempt to compare the real world and virtual representations through solar effects visual perception. We will describe the process of 3D modelling in three levels: static, semi-dynamic and dynamic. Pedestrians? visual perception is evaluated by studying participants? judgments of outdoor urban daylighting during their observations/walk in real and virtual urban paths. Results show that solar effects representations depend on the experimental conditions, the visualization method as well as the introduction of motion to our experiment. This directed our work towards improving the degree of immersion and interaction by using free movement in the virtual world to evaluate urban daylight.

109. Motion impact on daylighting ambiance evaluation in virtual world Tahrani, Souha, Moreau, Guillaume, and Woloszyn, Philippe In Computer in Urban Planning and Urban Management, CUPUM 2005 [Abs]

     The aim of this study is to assess the use of Virtual Reality technologies (VR) in cognitive evaluation of daylighting ambiences and more generally in a context of introducing VR as a new methodology for urban planning development. The urban environment is defined by the interaction between the city’s morphological characteristics and its physical behavior based on human interpretation. Contemporary psychology emphasizes the relation between perception and action and confirms that perception can be enhanced by the receptor?s motion. In this order, psycho-physical interaction creates a complex urban space that might be fully understood by over-layering the perceived information we gather while walking and moving. In the architectural and urban field, several studies analyze the urban space by using visual dynamic perception. These studies prove that walking can be a tool for reading and evaluating public space. But they however ignore the physical impact on that evaluation, and especially the impact of light on visual perception; whereas in the VR field, there are very few studies which compare perception in the real world versus perception in the virtual world. They mainly show the essential role of movement in obtaining a better perception. This study is a continuation of our work on evaluating urban daylighting by using VR, where we attempted to evaluate the solar effects on visual perception in a real and virtual urban path (Tahrani et al. 2005). The results of that study showed that visual perception largely depends on the user?s movement in space. Our objective in this study is to improve our methodology by using free movement in the virtual world to evaluate urban daylight. However, because of the limited size of the immersive room, we have to limit the user?s motion. We are, instead, implementing the concept of a less free movement by using the ?guided visits? navigation strategy (Azpiazu et al. 2004) which should enhance visual perception while respecting the constraints of the VR simulation. Finally, we evaluate pedestrians? visual perception by studying people?s personal classification of outdoor urban daylighting during their walk in real and virtual urban paths. Three urban study tools are used: solar effects, VR technology as well as movement.

110. Three-dimensional reconstruction and texturation of museographic objects using multiple images and stereoscopic depth map fusion Aubourg, Julian, Moreau, Guillaume, and Fuchs, Philippe In Electronic Imaging Three Dimensional Image Capture and Applications VI 2004 [doi]
111. La réalité virtuelle dans l’entreprise Moreau, Guillaume In Tutoriel Virtual Reality International Conference (VRIC) 2004
112. Développement d’un SIG 3D dédié au diagnostic des potentialités environnementales des bâtiments Musy, Marjorie, Ramos, Fabien, Siret, Daniel, Moreau, Guillaume, and Marenne, Christian In XXIIe Rencontres Universitaires de Génie Civil, Ville et Génie Civil 2004
113. Un SIG 3D pour l’étude des potentialités environnementales des enveloppes dans le cadre d’une opération de réhabilitation Siret, Daniel, Ramos, Fabien, Moreau, Guillaume, and Marenne, Christian In e-Sim 2004 2004
114. Accurate 3D reconstruction of museographic objects using multiple images Aubourg, Julian, Moreau, Guillaume, and Fuchs, Philippe In Virtual Reality International Conference 2003
115. Visual immersion for design tutorial Fuchs, Philippe, and Moreau, Guillaume In Virtual Concept 2003
116. Enhancement of stereoscopic comfort by fast control of frequency content with wavelet transform Lemmer, Nicolas, Moreau, Guillaume, and Fuchs, Philippe In Stereoscopic Displays and Virtual Reality Systems X 2003 [doi]
117. Interaction in virtual environments Moreau, Guillaume In Virtual Concept 2003
118. A framework for the haptic rendering of the human hand Stergiopoulos, Panagiotis, Moreau, Guillaume, Ammi, Mehdi, and Fuchs, Philippe In Virtual Reality HAPTICS 2003 2003 [doi]
119. Human factors and ergonomic studies for the car manufacturing industry Khoudja, Mohamed Benali, Moreau, Guillaume, Fuchs, Philippe, and Stergiopoulos, Panagiotis In ICEE 2002, International Conference on Engineering Education 2002
120. Stereoscopic Displays for Virtual Reality in the car manufacturing industry: application to design review and ergonomic studies Moreau, Guillaume, and Fuchs, Philippe In Proceedings of SPIE "Stereoscopic Displays and Virtual Reality Systems IX" 2002 [doi]
121. Dense stereo matching method using a quarter of wavelet transform Moreau, Guillaume, Fuchs, Philippe, Doncescu, Andrei, and Régis, Sébastien In Proceedings of the IEEE International Conference on Image Processing (ICIP’02) 2002
122. Virtual Reality: CAD and beyond Moreau, Guillaume, Fuchs, Philippe, and Stergiopoulos, Panagiotis In Virtual Concept 2002 2002
123. Introducing Virtual Reality for ergonomic studies in the car manufacturing industry Moreau, Guillaume, Fuchs, Philippe, Stergiopoulos, Panagiotis, and Khoudja, Mohamed Benali In ITEC 2002 2002
124. Fast and accurate collision detection for haptic interaction with solid models and virtual prototypes Stergiopoulos, Panagiotis, Moreau, Guillaume, Lourdeaux, Domitile, and Fuchs, Philippe In VRIC 2002
125. Approche méthodologique de la réalité virtuelle pour la CAO Fuchs, Philippe, and Moreau, Guillaume In MICAD 2001
126. Virtual reality in the design process: from design review to ergonomic studies Moreau, Guillaume, and Fuchs, Philippe In ESS’2001 2001
127. The Kernel of a Scenario Language for Animation and Simulation Donikian, Stéphane, Devillers, Frédéric, and Moreau, Guillaume In Eurographics Workshop for Computer Animation and Simulation 1999 [doi]
128. Vers le réalisme de la simulation de conduite en environnement urbain Donikian, Stéphane, Moreau, Guillaume, and Thomas, Gwenola In 6èmes journées du Groupe de travail Réalité Virtuelle 1998
129. Multimodal Driving Simulation in Realistic Urban Environments Donikian, Stéphane, Moreau, Guillaume, and Thomas, Gwenola In EURISCON’98 1998
130. From Psychological and Real-Time Interaction Requirements to Behavioural Simulation Moreau, Guillaume, and Donikian, Stéphane In Eurographics Workshop on Computer Animation and Simulation 1998 [doi]
131. Modélisation du comportement : de la psychologie comportementale à la simulation du trafic routier Moreau, Guillaume, and Donikian, Stéphane In Groupe de travail Animation-Simulation-Systèmes Dynamiques, PRC ALP 1998
132. Fast simulation models for an effective aircraft training Cozot, Rémi, and Moreau, Guillaume In Simtect’97 Advancing Simulation Technology 1997
133. Two 3D recovering methods for robot control Moreau, Guillaume, Mallem, Malik, Chavand, Florent, and N’zi, Edie Camille In SYROCO’97, 5th Symposium on Robot Control 1997
134. In