| Analyse oculométrique « on-line » avec zones d'intérêt dynamiques: application aux environnements d'apprentissage sur simulateur | | BIBA | Full-Text | 1 | |
| Francis Jambon; Vanda Luengo | |||
| Eye tracking analysis allows the identification of the information taken into account by a user. Today, this approach is well known and proven. However, in domains such as simulation based learning environments, this analysis must take place during the activity, and with areas of interest that evolve opportunistically over time. Theses points are not addressed by current approaches. So, we propose a novel approach, a new algorithm for analysis, and an acquisition system to address generically this limitation. We have applied this approach on two examples from the field of simulation based learning environments. | |||
| Physical ergonomics approach for touch screen interaction in an aircraft cockpit | | BIBA | Full-Text | 9 | |
| Jérôme Barbé; Nicolas Chatrenet; Régis Mollard; Marion Wolff; Patxi Bérard | |||
| The aim of this study was to define the physical ergonomics needs to optimize the integration of touch interaction in the future cockpit concept. A sample of 9 subjects were retained to cover the range of variability for Forward Reach ensuring that both small (5%) and large pilots (95%) are able to reach the controls from their seated position. A motion capture tool was used to capture functional reach envelops, pilot postures and upper limbs movements when subjects performed tactile tasks on different touchscreens locations. A subjective assessment for acceptability of posture (physical effort) was performed. Effects of task duration, visibility and hand lateralization were also considered. Results have shown that a set of criteria are to be considered to optimize Human System interaction. Physical effort varies depending on display location and task duration. The orientation of the displays needs also to be addressed to avoid visibility issues. | |||
| Persona pour la conception de systèmes complexes résilients | | BIBA | Full-Text | 17 | |
| Jean-René Ruault; Christophe Kolski; Frédéric Vanderhaegen | |||
| The sociotechnical systems are resilient when they have the capacity to face unforeseen situations without precedent, for which safety was not specified. Their four functions are: to avoid the accident, to resist vis-à-vis an accident, to adapt, to restore a viable and stable situation after an accident. We propose to adopt and adapt the concept of persona to formulate the functional and non-functional characteristics of operators of complex systems. This application enables us to identify design solutions for the functions "to avoid" and "to adapt" resilience, and to outline impacts on system architecture and system HCI. | |||
| Méthode agile centrée utilisateurs | | BIBA | Full-Text | 25 | |
| Dominique Deuff; Mathilde Cosquer | |||
| Among new services of telecommunication, many are based on more and more convergent interfaces (convergence of services through many devices) and, consequently, more and more complex to design. Also, offering easy to use and close to users' needs services, imply a user centered work which has to be done from the design of services and all through the project. The method we have set up is a mutual integration solution of the User Centered Design and the agile Scrum method. During the design phase, it is based on the overlapping of the two methods, and during the development phase, it is based on the application of short user tests in sprints which permit to imply users. This paper gathers elements at the source of this method and gives a broad outline of it. | |||
| Un Outil d'Évaluation de l'Interaction intégrant l'Oculométrie et les Signaux Physiologiques | | BIBA | Full-Text | 33 | |
| François Courtemanche; Aude Dufresne; Esma Aïmeur | |||
| The emphasis on user experience has lead researchers in HCI to take into account emotions in the evaluation of interactive systems. New evaluation approaches are required to integrate this aspect. Standard qualitative approaches are limited as they are based on observations and interviews after the interaction, therefore limiting the precision of diagnosis. User experience and emotional reactions being by nature dynamic and contextualized, evaluation approaches should be as well in order to diagnose interaction more accurately. This paper presents a quantitative and dynamic evaluation approach allowing contextualization of users' emotional reactions. The approach relies on eye tracking, physiological measures and task recognition and was implemented in an evaluation tool. The proposed tool was experimentally validated using two types of interactive systems: training simulator (31 participants) and e-commerce site (11 participants). | |||
| Méthode AVIVE pour l'évaluation de la qualité des données des tests utilisateurs en ergonomie | | BIBA | Full-Text | 41 | |
| Marie Vian; Charles Tijus; Laure Léger | |||
| In this article, we focus on changes in the conduct of observation in
interface ergonomics that are induced by digital technologies (including
Internet) and their impact on the data quality. This work is developed from a
thesis which allowed us to develop the AVIVE method.
The main objective of this article is to introduce AVIVE. Its aim is to estimate data quality through the three dimensions of "adequacy to the purpose of their collection" (A), "internal validity" (VI) and "external validity" (VE). We present the process leading to AVIVE creation, its three dimensions and an experiment using this method. We conclude with the perspectives of this method and proposed improvements. | |||
| De la gestion du risque fatigue à la prise de décision collaborative: l'exemple du drone Harfang | | BIBA | Full-Text | 49 | |
| Daniel Hauret; Régis Mollard; Marion Wolff | |||
| Harfang UAV is a high value asset in french intelligence arena. Since the initial operational capability (IOC), it has been deployed and involved in NATO operations. Its long endurance capability can lead operators to drowsiness and misunderstanding among crewmembers. Often involved in high value point of interest surveillance but sometimes in « looking at stones » missions all night long without any clue about what is gonna pop up » Harfang crewmembers are facing a big challenge. In this paper, we present some recommendations about how to manage fatigue risk in UAV military operations and how to improve communications for an enhanced sensemaking among crew members. | |||
| Comparaison de différentes approches de simulation dans les modèles de tâches | | BIBA | Full-Text | 57 | |
| Thomas Lachaume; Sybille Caffiau; Patrick Girard; Allan Fousse; Laurent Guittet | |||
| Task models draw benefit from a growing interest for interactive system design. One of the objectives of these models is to improve communication within the design teams and with users. Simulation tools present dynamically a task model allowing users to make execution choices. However, few studies have demonstrated the benefits of these tools. We study the impact of the several presentations provided by simulation tools to understand their impact on the understanding of task models. This study shows that a step-by-step presentation without showing the task tree allows a better understanding of the activity and the modeled concepts. | |||
| Contribution de la méthodologie SAMANTA à l'ergonomie d'interfaces en support des changements de tâche | | BIBA | Full-Text | 65 | |
| Thomas Villaren; Angélica Leal; Gilles Coppin | |||
| This article presents the methodology SAMANTA (Situation Awareness Modeling & ANalysis for Transition Amelioration) and its application to the analysis EPR nuclear power plants' operations. The methodology's key steps (modeling and transition analysis) are supported by a new web-based tool, which is described here. Its use is assessed through an expert analysis, leading to some recommendations regarding its improvement. | |||
| Réconcilier conception d'interfaces et conception logicielle: vers la « conception orientée-systèmes » | | BIBA | Full-Text | 73 | |
| Stéphane Chatty | |||
| Object-oriented design has failed to avoid a rift between interface design and software design, because the messages used in object-oriented poorly describe the interactions between users and their environment. By relying on process theories and interactive component programming, one can propose a common language between designers: that of system-oriented design, in which they all describe interfaces between systems and design new systems. | |||
| Un processus de développement outillé pour l'exploitation systématique des bénéfices offerts par une conception des systèmes interactifs centrée tâches | | BIBA | Full-Text | 81 | |
| Célia Martinie; Philippe Palanque; David Navarre; Eric Barboni; Marco Winckler | |||
| Since the seminal work from Duncan et al. republished in [2] many research
contributions have demonstrated the potential benefits of the exploitation of
operators' task analysis for the design of interactive systems.
These various contributions usually address specific problems proposing innovative solutions (exploiting the results of task analysis represented in task models) without (usually) capitalizing in a systematic way on previous work. This paper proposes a survey of the various benefits gained from exploiting task models. It is structured in two main classes: the ones associated to the various steps of the development process and the ones associated with the various artifacts produced throughout this process. Based on this survey, we describe a tool-supported development process exploiting in a systematic way all these benefits and additionally leveraging on them in order to provide new benefits. | |||
| IHM perlées pour le Cloud Computing: premiers retours d'expérience en informatique médicale | | BIBA | Full-Text | 89 | |
| Laure Martins-Baltar; Yann Laurillau; Gaëlle Calvary | |||
| The emergence of utility computing such as Cloud Computing makes the current desktop metaphor outdated. There is a need to open the desktop so that to, in addition to classical data, also consider actors and tasks as well as their relationships. This paper proposes the concept of "Pearl" for both denoting and representing socially augmented data. It describes a health care prototype, and reports a qualitative evaluation that confirms the innovation and relevance of the concept. | |||
| Implants cochléaires: Réglages et Visualisations | | BIBA | Full-Text | 97 | |
| Anne-Marie Dery-Pinna; Claudia C. Gutiérrez; Audrey Occello; Macha da Costa | |||
| In this article, we present a study on the medical visualizations needs for setting cochlear implants on touch screens. Solutions must ensure that current characteristics setting tools that are: user task-times, confidence in the data manipulated and security operations handled. This study was conducted as part of an academic and industry research project. To show the feasibility of our approach, we propose and evaluate in this paper two prototypes for setting cochlear implants aimed at different types of users which are patients and professionals. | |||
| PlayAllAround: Wearable One-hand Gesture Input and Scalable Projected Interfaces | | BIBA | Full-Text | 105 | |
| Yun Zhou; Bertrand David; René Chalon | |||
| PlayAllAround is a wearable camera-pico-projector system where the scalable interface allows mobile interaction. We access the digital information from the projected scalable interface, which provides both the nearer small-size interface and the farther large-size interface supporting private and public use. The system is in charge of realizing our concepts of an environment independent interface (EII), which focuses on enabling people to access their personal data as well as public resources at any time and any place. In this paper, we propose the design of a reference-cell in the field of ergonomics as well as the principle from decomposition of the application tasks to allow a scalable interface design, with the aim of providing enhanced user experience. We also present the design and the implementation aspects of our PlayAllAround system. We finally describe the evaluation methods and results of the hover gesture and the scalable interface from both the qualitative and quantitative points of view. | |||
| Guidage attentionnel à base de flou audiovisuel pour la conception d'interfaces multimodales | | BIBA | Full-Text | 113 | |
| Tifanie Bouchara; Brian F. G. Katz; Christian Jacquemin | |||
| To improve presentation strategies in multimedia browsing systems, perceptual processes involved in the search of a specific audiovisual object displayed among several distractors were investigated. The aim was to enhance the perceptual salience of the target to facilitate and speed up the search process. As visual blur was previously shown as an effective means for user guidance towards a sharp item in a set of blurred distracters, we propose to extend visual blur to audio and audiovisual blurs to improve multimodal search. A perceptual experiment was performed out to evaluate the effect of audio and visual blurs as well as audiovisual blur combinations. Participants had to retrieve an audio-visual target among six audiovisual concurrent objects. Results showed that both visual and audio blurs rendered distractors less prominent and helped users to focus on a sharp target. Furthermore, search task response times were even faster and accuracy even greater with a redundant combination of audio and visual blurs. | |||
| Méthodologie de conception de textures pour les interfaces tactiles à frottement programmable | | BIBA | Full-Text | Full-Text | 121 | |
| Ludovic Potier; Thomas Pietrzak; Géry Casiez; Nicolas Roussel | |||
| The design of textures for so-called variable friction technologies requires multiple perspectives, which this paper aims to outline and discuss. We first propose a definition of texture and describe the current state of knowledge on their perception. After presenting two technologies for variable friction and comparing them to other tactile interfaces, we describe several particular uses for these devices. We then discuss psychophysical methods for signal perception evaluation and finally discuss methodologies for creating multidimensional tactile content. | |||
| La modification utilisateur comme indice ergonomique évaluatif d'un Espace Personnel d'Information | | BIBA | Full-Text | 129 | |
| Claudia Detraux; Dominique L. Scapin | |||
| This paper describes an experiment conducted on a mockup of a Personal Information Space. Users were asked to perform data entry and retrieval tasks, then to modify the mockup according to their needs and wishes. The results allowed to validate the item structure for the future personal space, and to assess the role of user modifications as evaluation cues, and for the development of further ergonomic recommendations. | |||
| De l'impersonnel au personnel, du pérenne à l'éphémère: retours d'expérience de Cocoon | | BIBA | Full-Text | 137 | |
| Fatoumata Camara; Gaëlle Calvary; Rachel Demumieux | |||
| This paper deals with context-aware mobile information systems. From an analysis of types of information delivered by such systems, it proposes the PIPE (Personal, Impersonal, Perennial, Ephemeral) taxonomy, and characterizes 9 systems accordingly. This shows that focus has been mostly set on impersonal information (museums, restaurants, music, etc.) so far while neglecting personal information related to individuals' life stories and contexts. This motivated the design, implementation and evaluation of Cocoon, a context-aware information system that fully covers the PIPE taxonomy. Evaluation of Cocoon shows that personal information is more important to users than impersonal information. However, as there is currently no source for personal information, the paper proposes the concept of Life Trees. | |||
| Une approche IDM pour l'adaptation ergonomique au contexte d'IHM mobile | | BIBA | Full-Text | 145 | |
| Dorra Zaibi; Meriem Riahi; Faouzi Moussa | |||
| With the notion of mobility and computing ubiquity, we have migrated from the user-centered design to the context-based design, integrating user, platform and environment. We have passed from the presentation ergonomics and adaptation to the user profiles to the contextual ergonomics and the management of nomadic objects. It is against this background that fits our research. We propose, for that purpose, an approach, based on MDA (Model-Driven Architecture) concepts, for ergonomic adaptation to the context. It is based on a generic context model and transformation models. | |||
| Retour d'expérience sur KISS, un outil de développement d'habitat intelligent par l'utilisateur final | | BIBA | Full-Text | 153 | |
| Emeric Fontaine; Alexandre Demeure; Joëlle Coutaz; Nadine Mandran | |||
| We present KISS (Knit your Ideas Into Smart Spaces), an end-user development system for the home. KISS enables users to program their home with sentences expressed in a pseudo-natural language. Programs can be tested either with the virtual home or in the real home. In this paper, we describe KISS and report an evaluation that shows that users are able to program a real-life scenario. | |||
| Analyse de l'usage fonctionnel des services audiovisuels des foyers disposant de l'IPTV | | BIBA | Full-Text | 161 | |
| Cédric Bertolus; Thibaut Feuillet; Daniel Bailleul | |||
| The arrival of new interactive services on IP Digital TV supposes a change in the model of interaction proposed on the TV set. In order to validate and guide this potential development, in particular by determining the frequency and the sequence of keys actions performed by users with the remote control, a study based on the automatic collection of traces was carried out in situ with 50 homes for one month. The main findings of the study are that the activity ratio remains very low and that the TV Live service is still largely dominating. There is however, and in a new way, an increasing use of the graphical user interface. | |||
| Apports des tablettes tactiles pour jeunes adultes présentant une déficience mentale ou un trouble autistique: études de cas | | BIBA | Full-Text | 169 | |
| Déborah Amar; Anja Goléa; Marion Wolff; Maria Pilar Gattegno; Jean-Louis Adrien | |||
| The emergence of touchscreen interfaces and more specifically of tablet computers raises the question of contributions of this new interface as compared to conventional interfaces. With these case studies, we looked for possible contributions of touch pads for persons with intellectual disability or autism spectrum disorder, more particularly in terms of interaction and collaboration. An experiment was carried out to analyze interaction behaviors during an execution of tangram puzzles performed on a tablet computer, or in the conventional way using wooden pieces. Results suggest that the touch pad generates an increased motivation and promotes positive interaction between subjects. | |||
| Comment accroître le rôle des utilisateurs dans l'évaluation de la qualité d'utilisation d'un système | | BIBA | Full-Text | 173 | |
| Agnès Saulnier; Patrick Courounet; Marie-Luce Viaud | |||
| This paper presents criteria and methods which were used to evaluate the usability of several professional services within the European project ASSETS. A unified approach of user-centered method is proposed to test services at various stages of development according to their GUI or API access. The notion of perceived usability and utility are introduced to increase the user involvement in the evaluation process. In our professional context, we tried to highlight the relevance of the perceived quality of the results. | |||
| Utilisabilité d'un système de stimulation cognitive | | BIBA | Full-Text | 177 | |
| Melissa Brun; Gabriel Michel; Eric Brangier | |||
| The aging population is one of the major problems of our societies, and to deal with, a promising solution is the development of development cognitive stimulation software. We want to show that these systems have lack of usability. For this we transformed one of the most popular software by incorporating ergonomic knowledge. Our results show significantly positive influence of usability compared to a classic exercise. | |||
| Analyzing visual scanpaths on the Web using the mean shift procedure and T-pattern detection: a bottom-up approach | | BIBA | Full-Text | 181 | |
| Gautier Drusch; J. M. Christian Bastien | |||
| Scanpaths are mainly analyzed in a top-down approach, with the use of a priori areas of interest (AOI). When comparing scanpaths, different approaches and techniques can be used. Some authors use the Levenshtein distance, combined with a clustering method so as to uncover patterns of visual exploration. More recently, the T-pattern technique has been used to analyze both the temporal and the spatial aspects of the scanpaths. The aim of this study is to explore the feasibility of an analysis of scanpaths based solely on a bottom-up approach, i.e., by defining the AOI based on visual data and then by analyzing them so as to discover scanpaths patterns. In order to do so, two techniques are combined: the mean shift procedure to detect AOI automatically, and the T-pattern techniques developed by Magnusson (2000). This study indicates that this approach is relevant and yields interesting results. | |||
| LABY: Un support d'aide à l'évaluation de choix de conception d'IHM pour le contrôle aérien | | BIBA | Full-Text | 185 | |
| Robert Parise; Jean-Paul Imbert; François Marais; Roland Alonso | |||
| The iterative approach in the development of Human Machine Interfaces involves the validation of design choices on both aspects of design and means of interaction. In the case of complex interfaces, conduct evaluations of such choices can be very difficult and expensive. In the field of air traffic control, especially for the design of the controllers' radar display, a simulation tool for high-fidelity usage scenarios LABY has been developed to enable ergonomists and engineers to evaluate HMI solutions in a simplified and controllable environment. In this paper we present the use of LABY in three experiments realized in order to design an innovative interface for air traffic controllers. | |||
| Evaluation de l'apport d'une interface écologique appliquée au pilotage de sous-marin | | BIBA | Full-Text | 189 | |
| Samantha Judas; Philippe Rauffet; Gaël Morel; Christine Chauvin; Pascal Berruet; Norbert Toumelin | |||
| In continuation of work resulting from the collaboration between DCNS and two laboratories (CRPCC and LABSTICC) from the University of South Brittany on Ecological Interface Design, we present an experiment to compare two interfaces. One was designed following the principles of ecological interface design, the other is a more traditional interface. This study evaluates the contribution of ecological interface for piloting a submarine using new technology (x helm). We analyze the effects of interface over performance, workload and situation awareness of participants in a piloting task. In this perspective, a piloting task was proposed to 19 experts and 20 novices with either a standard interface, either an ecological interface. This paper presents the context of this study and the methodology used. The results are being processed and will therefore be exposed during the oral presentation. | |||
| Évaluation de la charge mentale de contrôleurs aériens lors de l'utilisation d'une interface tout électronique | | BIBA | Full-Text | 193 | |
| Caroline Martin; Julien Cegarra | |||
| New technologies are often perceived as a leading sign for the performance,
new functionalities availability as graphical rendering quality... This
observation justifies the interest in new technologies integration in a working
situation. In fact it is commonly perceived as beneficial for the human
operator. Nevertheless, we have to wonder about the familiarization phase
required by this type of adjustment and on its impact on the operator's working
activity.
This study has consisted in evaluating the level of mental workload felt by operators even though they performed a realistic control task using an innovative platform. This evaluation has been based on the analysis of two kinds of ocular parameters: the eye fixations and the pupil diameter. The data analysis shows that familiarizing with the new interface requires the solicitation of a significant level of cognitive resources. This result is illustrated by an important ocular activity dedicated to the interface use. | |||
| Impact de la représentation graphique de points d'intérêt sur la perception des distances en réalité augmentée | | BIBA | Full-Text | 197 | |
| Thomas Dazeniere; J. M. Christian Bastien; Pascal Gaden; Jordane G. Grenier | |||
| This paper presents preliminary results of a study aimed at evaluating the effect of different ways of presenting points of interests (POI) in an augmented reality system on distance estimation. Each presentation applies specific combination of depth cues (relative size, occlusion, height, partial occlusion). Preliminary results from seven participants indicate that depth cues included in the design of the POI reduces the underestimation of the distances of the POI. The interfaces that facilitate distance estimation are those that rely both on the use of height in the visual field and relative size but not on occlusion. | |||
| Developing resilience engineering principles for design: the case of pilot's incapacitation in civil aviation | | BIBA | Full-Text | 201 | |
| Barbara Mawhin; Philippe Cabon; Florence Buratto; Adrien Quillaud | |||
| This article focuses on an analysis of the strategies used by pilots of the civil aviation in case of an incapacitation during flight. Incapacitation is defined in this research as any situation where the level of available aircrew resources is lower than the required level of resources needed to maintain the optimum performance with common strategies. There are different types of incapacitation depending on their severity and operational consequences. Incapacitations are a contributing factor of several events in aviation. In case of an incapacitation, aircrews use strategies to maintain their performance and manage the overall level of flight safety. This work aims at developing a methodology to perform a risk management of crew incapacitation and to identify crew strategies in order to study the potential to integrate them in the design of future cockpits and pilot's training. This paper deals with the identification of strategies. | |||
| La conception des IHM chez NEXTER Systems: Mise en place d'une plateforme d'évaluation rattachée au banc d'études et de développement véhicules | | BIBA | Full-Text | 205 | |
| Valérie Castel; Marion Wolff; Régis Mollard; Patxi Bérard | |||
| NEXTER Systems has been working for over thirty years to optimize the design of its military ground platforms. Meanwhile, military systems have become increasingly complex. It raises the question of improving the interfaces shared between human and system, in order to meet the just need of the crew. This article presents the principles of an evaluation platform for operational use, mounted on a development bench. | |||
| Le Contrôle Aérien Militaire au Bout des Doigts: Une Conception Multi-touch Centrée Utilisateur | | BIBA | Full-Text | 209 | |
| Cécilia Aguero; Philippe Chopin | |||
| Recent technological advances have led to an increasing presence of multi-touch surfaces in daily consumer products. Still, many challenges remain when designing and evaluating dedicated multi-touch applications in safety and time critical domains. Our research goal was to investigate the value of multi-touch technology in the real work situation of military Air Traffic Control (ATC) with a user-centered approach. After gathering end-user's requirements via workshops, an existing ATC source application was adapted to be used on a multi-touch display. Finally, user evaluations were completed via observations and questionnaires. Findings suggested that multi-touch technology is suitable (satisfaction and effectiveness) for the ATC operational tasks, especially for graphical objects manipulation. | |||
| Left-over Windows Cause Window Clutter... But What Causes Left-over Windows? | | BIBA | Full-Text | 213 | |
| Julie Wagner; Wendy E. Mackay; Stéphane Huot | |||
| Sleep mode lets users go for days or weeks without rebooting, supporting work on multiple tasks that they can return to later. However, users also struggle with window clutter, facing an increasing number of 'left-over windows' that get in the way. Our goal is to understand how users create and cope with left-over windows. We conducted a two-week field study with ten notebook users. We found that they work in very short sessions, switching often between computer-based and external tasks. 34% of left-over windows remain untouched for a day or more, increasing in quantity until they all disappear after a reboot. Some users reboot as a deliberate 'clean-up' strategy, whereas others lose left-over windows after an unexpected system crash. Users intentionally keep left-over windows as to-do lists, as reminders of upcoming tasks, and for facilitating future access; the rest are simply forgotten. Tools for visualizing and managing left-over windows should help users reduce window clutter, while maintaining the benefits of interruptible work sessions. | |||
| Comment communiquer lorsqu'on est un utilisateur infirme moteur cérébral (IMC) de type athétosique ? Étude de cas des différents moyens de communication | | BIBA | Full-Text | 217 | |
| Yohan Guerrier; Christophe Kolski; Franck Poirier | |||
| This paper proposes a study of the various means of communication for users with cerebral palsy (CP) athetoid. Three main types of communication means are studied: virtual keyboards, voice recognition and technical physical helps. The discussion allows establishing a link with the perspectives: they concern the design of a communication support dedicated to users with CP athetoid profile. | |||
| La pique et le pop-up: augmenter la persuasion du site web visité par l'injection d'une technique de soumission dans le pop-up | | BIBA | Full-Text | 221 | |
| Valérie Fointiat; Stéphanie Curcio; Roxane Saint-Bauzel; Robin Vivian; Christian Bastien | |||
| This experimental research was designed 1) to examine the persuasiveness of a non-commercial website in terms of cognitive responses and confidence and 2) to test the efficiency of a specific compliance technique, the so-called Pique technique (i.e. an odd or unusual request can increase compliance in situations in which the typical response to the request is refusal). The participants were led to visit a non-commercial website during ten minutes. Five minutes after the beginning of the experimental task, some participants were exposed to a standard pop-up (standard pop-up condition), whereas others were exposed to a Pique pop-up (pique pop-up condition). In a control condition, no pop-up appeared during the task. Then each participant completed a questionnaire, in which the persuasiveness was assessed. The results show that the Pique pop-up was the most persuasive, suggesting that the pique message rather than the pop-up by itself can influence the web user. | |||
| Système interactif de détection de comportements dynamiques anormaux | | BIBA | Full-Text | 225 | |
| Benoit Rouxel; Gilles Coppin; Franck Poirier; Jean-Yves Antoine | |||
| This paper presents an approach to identify abnormal behavior in a sea surveillance context. It presents the equipment used by sea surveillance operators. Then, it details the cognitive process followed by operators to analyze a situation as well as the identification techniques that have been investigated to support sea surveillance. At last, the paper propose an original approach that includes the human operator during the detection process. | |||
| Technique multi-points indirecte relative pour l'interaction avec des écrans de grandes dimensions | | BIBA | Full-Text | Full-Text | 229 | |
| Jérémie Gilliot; Géry Casiez; Nicolas Roussel | |||
| Multitouch interaction shows its limits with large display surfaces. Indirect interaction allows to use control surfaces that are much smaller than display surfaces. Absolute indirect interaction raises accuracy problems and relative indirect interaction only allows to interact with a single cursor. We present a relative indirect multitouch interaction technique allowing to create, control, delete several cursors without sacrificing precision for interacting with small objects. | |||
| Evaluation subjective des algorithmes d'interpolation de zoom en imagerie médicale | | BIBA | Full-Text | 233 | |
| Olivier Hû; Christine Cavaro-Ménard; Lindsey Roberts | |||
| Interpolation, or the zoom function, in medical imaging processing is imperative in the visualization of subtle lesion. However, the reliability and validity of developed algorithms from an observer performance perspective are poorly documented. Subjective algorithm performance differs depending on the techniques used and the properties of the original image, yet these functions are widely and frequently used in clinical practice. This study evaluated the subjective performance of six practitioners when assessing five different pathologies captured by MRI. The clinical cases were then interpolated using 50 non-adaptive zoom techniques. Preliminary results demonstrate that no algorithm emerged as the optimal interpolation method within this study and that the selection of interpolation algorithm in medical imaging appears to depend largely on the pathology under investigation. | |||
| Le projet Miny: des interactions multimodales pour les applications Web | | BIBA | Full-Text | 237 | |
| Xavier Le Pallec; Jean-Claude Tarby; José Rouillard | |||
| Web applications are currently widespread thanks to cloud computing and optimization of rendering/Javascript engines. Associating distant interaction devices could enhance user experience for such applications or allow them to become more pervasive. Our project MINY (Multimodality Is Nice For You) intends to provide a framework to develop multimodal Web applications. We have implemented a middleware that allows developers to easily program communication between Web application and distant interaction devices. We show on an example how we can associate dynamically interaction modalities at runtime thanks to reflexive properties of Javascript. | |||
| Mouvements pseudo-rigides pour des interactions multi-doigts plus flexibles | | BIBA | Full-Text | Full-Text | 241 | |
| Yosra Rekik; Nicolas Roussel; Laurent Grisoni | |||
| Multi-touch interaction requires a trade-off between users' desires and capabilities, and gesture recognition constraints. Current approaches to that problem lack flexibility. The number of fingers used for a gesture usually plays a key part in the recognition process, for example. In this paper, we propose the use of pseudo-rigid movements to increase the flexibility of this process. We show how these movements can be determined in real time from the contact information usually available. We explain how they allow to free the recognition process from the number of fingers used and to move towards multi-movement gestures, independent or co-ordinated. Finally, we present an interaction technique that takes advantage of this increased flexibility. | |||