publications([{ "lang": "fr", "type_publi": "these", "doi": "https://tel.archives-ouvertes.fr/tel-01869267", "title": "Expansion de cibles pour le pointage et la sélection : Application à l'interaction à distance en chirurgie augmentée", "abstract": "Pointing to/ Selecting targets is an elementary task universally present in graphical user interfaces (GUI). This task can be difficult to perform if the control of the cursor is not easy or if the target is far away or small. Thus facilitating target selection is a fundamental and active research topic in Human-Computer Interaction (HCI) and researchers have proposed numerous targeting assistance techniques.\r\nOur research focuses on targeting assistance techniques that allocate larger activation areas to targets. Such target expansion techniques rely on two basic elements: the expansion algorithm and the visual aid. The expansion algorithm distributes partly or wholly the free space among the targets. The visual aid presents the resulting target expansion to the users. Our work is dedicated to the visual aid that enables the users to take full advantage of the target expansion technique during the pointing/selection tasks.\r\nWe first propose a three-axes design space for visual aid mechanisms. We further define a matrix-based notation for concisely describing a target expansion technique along the three design axes. We provide an analytical exploration of the design space by classifying existing target expansion techniques and by designing eight novel target expansion techniques, thus demonstrating the generative power of the design space. We also provide an experimental exploration of the design space by conducting two in-lab experiments. Based on the experimental results, we build a set of design recommendations.\r\nWe then put forward a conceptual predictive model of performance. The model relies on a systematic analysis of the relevance of the visual aid provided by a target expansion technique based on the three goal-oriented phases of a selection task: the starting phase to initiate the movement towards the target, the transfer phase to bring the cursor into the goal target and the selection validation phase. To test the model we consider experimental results of the literature and of a third conducted in-lab experiment.\r\nOur contributions are applied to the field of Augmented Surgery and in particular interaction with a distant screen during a surgery in the operating theatre. As part of a Aesculap-CIFRE thesis, the next version of the product Aesculap’s OrthoPilot Navigation System for orthopaedic surgery will include a target expansion technique for facilitating target selection by the surgeon in the operating theatre. We also provide a new foot gesture-based technique, namely Medical TapTap, for the validation of selection in the operating theatre.\r\n\r\nVidéo de la soutenance : \r\n\r\n", "year": 2017, "uri": "http://iihm.imag.fr/publication/G17a/", "id": 809, "bibtype": "phdthesis", "editor": "Université Grenoble Alpes", "authors": { "1": { "first_name": "Maxime", "last_name": "Guillon" } }, "date": "2017-11-07", "document": "http://iihm.imag.fr/publs/2017/PhDThesisFinal_MaximeGuillon.pdf", "type": "Thèses et habilitations", "pages": "1-222", "abbr": "G17a" }, { "lang": "en", "type_publi": "icolcomlec", "doi": "http://dx.doi.org/10.1145/2909132.2909265", "title": "Target Expansion Lens: It is Not the More Visual Feedback the Better!", "abstract": "To enhance pointing tasks, target expansion techniques allocate larger activation areas to targets. We distinguish two basic elements of a target expansion technique: the expansion algorithm and the visual aid on the effective expanded targets. We present a systematic analysis of the relevance of the visual aid provided by (1) existing target expansion techniques and (2) Expansion Lens. The latter is a new continuous technique for acquiring targets. Expansion Lens namely, uses a round area centered on the cursor: the lens. The users can see in the lens the target expanded area boundaries that the lens is hovering over. Expansion Lens serves as a magic lens revealing the underlying expansion algorithm. The design rationale of Expansion Lens is based on a systematic analysis of the relevance of the visual aid according to the three goal-oriented phases of a pointing task namely the starting, transfer and validation phases. Expansion Lens optimizes (1) the transfer phase by providing a simple-shaped visual aid centered on the cursor, and (2) the validation phase regarding error rates, by displaying the target expanded area boundaries. The results of our controlled experiment comparing Expansion Lens with four existing target expansion techniques show that Expansion Lens highlights a good trade-off for performance by being the less-error prone technique and the second fastest technique. The experimental data for each phase of the pointing task also confirm our design approach based on the relevance of the visual aid according to the phase of the pointing task.", "authors": { "1": { "first_name": "Maxime", "last_name": "Guillon" }, "2": { "first_name": "François", "last_name": "Leitner" }, "3": { "first_name": "Laurence", "last_name": "Nigay" } }, "year": 2016, "uri": "http://iihm.imag.fr/publication/GLN16a/", "pages": "52-59", "bibtype": "inproceedings", "id": 770, "abbr": "GLN16a", "address": "Bari, Italy", "date": "2016-06-07", "document": "http://iihm.imag.fr/publs/2016/GuillonNigayAVI16.pdf", "type": "Conférences internationales de large diffusion avec comité de lecture sur texte complet", "booktitle": "Proceedings of the International Working Conference on Advanced Visual Interfaces (AVI'16), Bari, Italy, 7-10 June, 2016" }, { "lang": "en", "type_publi": "icolcomlec", "doi": "http://dx.doi.org/10.1145/2702123.2702375", "title": "Investigating Visual Feedforward for Target Expansion Techniques", "abstract": "Target expansion techniques facilitate the pointing task by enlarging the effective sizes of targets. When the target expansion is applied to both the motor and visual spaces, the visual feedforward mechanism is key: Indeed it provides a visual aid to the user on the effective expanded targets prior to the execution or completion of the pointing task, enabling the user to take full advantage of the target expansion technique. Focusing on feedforward mechanisms, we introduce a design space that allows us to describe, classify and design target expansion techniques. To do so we first introduce and characterize the concept of atomic feedforward mechanism along three design axes. We then describe a target expansion technique as a combination of atomic feedforward mechanisms using a matrix-based notation. We provide an analytical exploration of the design space by classifying existing techniques and by designing six new techniques. We also provide a first experimental exploration of the design space in the context of distant pointing. The experimental protocol includes an innovative target layout for handling non-centroidal target expansion. The results show that feedforward dynamicity increases movement time and decreases subjective usability, while explicit expansion observability efficiently supports error prevention for distant pointing.", "authors": { "1": { "first_name": "Maxime", "last_name": "Guillon" }, "2": { "first_name": "François", "last_name": "Leitner" }, "3": { "first_name": "Laurence", "last_name": "Nigay" } }, "year": 2015, "uri": "http://iihm.imag.fr/publication/GLN15a/", "pages": "2777-2786", "bibtype": "inproceedings", "id": 716, "abbr": "GLN15a", "address": "Seoul, Republic of Korea", "date": "2015-02-12", "document": "http://iihm.imag.fr/publs/2015/GuillonNigay2015.pdf", "type": "Conférences internationales de large diffusion avec comité de lecture sur texte complet", "booktitle": "Proceedings of the 33th international conference on Human factors in computing systems (CHI 2015)" }, { "lang": "en", "publisher": "ACM", "doi": "http://dx.doi.org/10.1145/2598153.2598178", "title": "Static Voronoi-Based Target Expansion Technique for Distant Pointing", "abstract": "Addressing the challenges of distant pointing, we present the feedforward static targeting assistance technique VTE: Voronoi-based Target Expansion. VTE statically displays all the activation areas by dividing the total screen space into areas such that there is only one target inside each area, also called Voronoi tessellation. The key benefit of VTE is in providing the user with an immediate understanding of the targets’ activation boundaries before the pointing task even begins: VTE then provides static targeting assistance for both phases of a pointing task, the ballistic motion and the corrective phase. With the goal of making the environment visually uncluttered, we present a first user study to explore the visual parameters of VTE that affect the performance of the technique. In a second user study focusing on static versus dynamic assistance, we compare VTE with Bubble Ray, a dynamic Voronoi-based targeting assistance technique for distant pointing. Results show that VTE significantly outperforms the dynamic assistance technique and is preferred by users both for ray-casting pointing and relative pointing with a hand-controlled cursor. ", "authors": { "1": { "first_name": "Maxime", "last_name": "Guillon" }, "2": { "first_name": "François", "last_name": "Leitner" }, "3": { "first_name": "Laurence", "last_name": "Nigay" } }, "year": 2014, "uri": "http://iihm.imag.fr/publication/GLN14a/", "pages": "41-48", "bibtype": "inproceedings", "id": 687, "abbr": "GLN14a", "address": "Como, Italy", "date": "2014-05-27", "document": "http://iihm.imag.fr/publs/2014/AVI14-GuillonLeitnerNigay.pdf", "type": "Conférences internationales de large diffusion avec comité de lecture sur texte complet", "booktitle": "Proceedings of the International Working Conference on Advanced Visual Interfaces (AVI 2014)", "type_publi": "icolcomlec" }, { "lang": "fr", "type_publi": "colloque", "doi": "https://hal.archives-ouvertes.fr/hal-01089609", "title": "VTE : une technique de pointage à distance", "url": "https://hal.archives-ouvertes.fr/hal-01089609", "abstract": "Cet article présente la technique d’interaction VTE (Voronoi-based Target Expansion), pour pointer sur une cible numérique affichée sur un écran distant. VTE exploite l’espace libre entre les cibles à l’écran en partageant l’espace de l’écran en zones de grandeur optimale pour chaque cible selon une tesselation de Voronoï. Les zones sont affichées de façon statique sur l’écran et l’utilisateur peut sélectionner une cible en pointant n’importe où dans la zone correspondant à la cible. Ainsi VTE facilite le pointage en augmentant la taille des cibles dans l’espace visuel et moteur. De nombreux environnements nécessitent de pouvoir interagir avec des objets numériques sur un écran distant. Notre domaine d’application est la chirurgie augmentée. ", "authors": { "1": { "first_name": "Maxime", "last_name": "Guillon" }, "2": { "first_name": "François", "last_name": "Leitner" }, "3": { "first_name": "Laurence", "last_name": "Nigay" } }, "year": 2014, "uri": "http://iihm.imag.fr/publication/GLN14b/", "pages": "8-9", "bibtype": "inproceedings", "id": 706, "abbr": "GLN14b", "address": "Lille, France", "date": "2014-10-28", "document": "http://iihm.imag.fr/publs/2014/VTEDemo.pdf", "type": "Autres conférences et colloques avec actes", "booktitle": "Actes informels de la 26e conférence francophone sur l'Interaction Homme-Machine : démonstration" }, { "lang": "fr", "type_publi": "colloque", "title": "Techniques de Pointage à Distance : Cibles Numériques et Cibles Physique", "url": "https://ubimob2014.sciencesconf.org/42778", "abstract": "Au sein d’un environnement ubiquitaire, l’ordinateur devient évanescent : nos objets quotidiens sont augmentés d’électronique, les environnements deviennent perceptifs déconfinant l’interaction homme-machine de l’ancien ordinateur «boîte grise» à des espaces pervasifs. Désormais, l’utilisateur évolue dans un monde physico-numérique ou espace interactif mixte. Au sein de cet espace interactif, un besoin est alors d’interagir à distance que ce soit pour manipuler des objets numériques sur un écran distant ou des objets physiques. Cet article est dédié aux techniques de pointage à distance pour désigner un objet numérique ou physique. Nous décrivons six techniques de pointage pour interagir dans un environnement ubiquitaire, la première pour pointer à distance sur des cibles numériques, les cinq autres pour pointer sur des objets physiques avec et sans un dispositif mobile.", "authors": { "1": { "first_name": "Céline", "last_name": "Coutrix" }, "2": { "first_name": "William", "last_name": "Delamare" }, "3": { "first_name": "Maxime", "last_name": "Guillon" }, "4": { "first_name": "Takeshi", "last_name": "Kurata" }, "5": { "first_name": "François", "last_name": "Leitner" }, "6": { "first_name": "Laurence", "last_name": "Nigay" }, "7": { "first_name": "Thomas", "last_name": "Vincent" } }, "year": 2014, "uri": "http://iihm.imag.fr/publication/CDG+14a/", "pages": "5", "bibtype": "inproceedings", "id": 691, "abbr": "CDG+14a", "address": "Nice, France", "date": "2014-06-05", "document": "http://iihm.imag.fr/publs/2014/UBIMOB2014-DistantPointing.pdf", "type": "Autres conférences et colloques avec actes", "booktitle": "UbiMob2014 : 10èmes journées francophones Mobilité et Ubiquité" }]);