publications([{
   "lang": "en",
   "type_publi": "these",
   "doi": "https://tel.archives-ouvertes.fr/tel-01677433",
   "title": "Multi-touch gesture interactions and deformable geometry for 3D edition on touch screen ",
   "abstract": "Multi-touch gesture interactions and deformable geometry for 3D edition on touch screen: Despite the advances made in the fields of existing objects capture and of procedural generation, creation of content for virtual worlds can not be perform without human interaction. This thesis suggests to exploit new touch devices (\"multi-touch\" screens) to obtain an easy, intuitive 2D interaction in order to navigate inside a virtual environment, to manipulate, position and deform 3D objects. First, we study the possibilities and limitations of the hand and finger gestures while interacting on a touch screen in order to discover which gestures are the most adapted to edit 3D scene and environment. In particular, we evaluate the effective number of degrees of freedom of the human hand when constrained on a planar surface. Meanwhile, we develop a new gesture analysis method using phases to identify key motion of the hand and fingers in real time. These results, combined to several specific user-studies, lead to a gestural design pattern which handle not only navigation (camera positioning), but also object positioning, rotation and global scaling. Then, this pattern is extended to complex deformation (such as adding and deleting material, bending or twisting part of objects, using local control). Using these results, we are able to propose and evaluate a 3D world editing interface that handle a natural touch interaction, in which mode selection (i.e. navigation, object positioning or object deformation) and task selections is automatically processed by the system, relying on the gesture and the interaction context (without any menu or button). Finally, we extend this interface to integrate more complex deformations, adapting the garment transfer from a character to any other in order to process interactive deformation of the garment while the wearing character is deformed. ",
   "year": 2015,
   "uri": "http://iihm.imag.fr/publication/B15a/",
   "id": 846,
   "bibtype": "phdthesis",
   "abbr": "B15a",
   "authors": {
      "1": {
         "first_name": "Rémi",
         "last_name": "Brouet"
      }
   },
   "date": "2015-03-15",
   "type": "Thèses et habilitations",
   "pages": "118"
},
{
   "lang": "en",
   "type_publi": "icolcomlec",
   "doi": "http://dx.doi.org/10.1007/978-3-642-40483-2_20",
   "title": "Understanding hand degrees of freedom and natural gestures for 3D interaction on tabletop",
   "url": "http://hal.inria.fr/hal-00814014",
   "abstract": "Interactively creating and editing 3D content requires the manipulation of many degrees of freedom (DoF). For instance, docking a virtual object involves 6 DoF (position and orientation). Multi-touch surfaces are good candidates as input devices for those interactions: they provide a direct manipulation where each finger contact on the table controls 2 DoF. This leads to a theoretical upper bound of 10 DoF for a single-handed interaction.\r\n\r\nWith a new hand parameterization, we investigate the number of DoF that one hand can effectively control on a multi-touch surface. A first experiment shows that the dominant hand is able to perform movements that can be parameterized by 4 to 6 DoF, and no more (i.e., at most 3 fingers can be controlled independently). Through another experiment, we analyze how gestures and tasks are associated, which enable us to discover some principles for designing 3D interactions on tabletop.",
   "authors": {
      "1": {
         "first_name": "Rémi",
         "last_name": "Brouet"
      },
      "2": {
         "first_name": "Renaud",
         "last_name": "Blanch"
      },
      "3": {
         "first_name": "Marie-Paule",
         "last_name": "Cani"
      }
   },
   "year": 2013,
   "uri": "http://iihm.imag.fr/publication/BBC13a/",
   "pages": "297-314",
   "bibtype": "inproceedings",
   "id": 622,
   "abbr": "BBC13a",
   "address": "Cape Town, South Africa",
   "date": "2013-09-02",
   "document": "http://iihm.imag.fr/publs/2013/Interact13-understanding_hand_DoF-brouet.pdf",
   "type": "Conférences internationales de large diffusion avec comité de lecture sur texte complet",
   "booktitle": "Proceedings of the 14th IFIP TC13 Conference on Human-Computer Interaction (Interact 2013)"
}]);