Mark R Mine. Working in a virtual world: Interaction techniques used in the chapel hill immersive modeling program. Technical Report TR96-029, Department of Computer Science, University of North Carolina, 21, 1996.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....on 3D modeling in general. However, although 3D input devices with six degrees of freedom (6DOF) have been used to enhance modelers, little modeling has been done in immersive virtual reality systems. A good overview of 3D modeling systems with 6DOF input devices can be found in the work of Mine [18]. Mine s CHIMP [19] was used to study user interaction techniques. Similar goals were driving the work on DesignSpace by Chapin [7] Bowman s Conceptual Design Space [4] and SeamlessDesign by Kiyokawa [12] A large number of researchers have been working on virtual reality applications for pure ....

Mine M. Working in a Virtual World: Interaction Techniques Used in the Chapel Hill Immersive Modeling Program. UNC Chapel Hill Computer Science Technical Report TR96-029, 1996.

....a number of advantages. Real time head tracked stereoscopic view improves the understanding of shape and spatial relationships. Spatial direct manipulation improves the accessibility to 3 D objects in a quick and intuitive way. For the last decade, a number of immersive modelers have been developed[3, 4, 5, 6]. However, most of them are only able to construct the shape of virtual objects, not to describe their behavior or geometric constraints. We have developed a new method for imposing geometric constraints on virtual objects within an immersive modeler. This method provides a number of geometric ....

....modeling has attracted much attention because of its advantages explained in the next section. For the last decade, a number of immersive modeling systems have been developed; for example, VLEGO [4] the Conceptual Design Space (CDS) 5] and the Chapel Hill Immersive Modeling Program (CHIMP) [6]. However, most of these systems support only constructing 3 D shapes, not imposing geometric constraints on the 3 D shapes. 2.1 Immersive Modeling Immersive modeling is a technique to design 3 D objects in an immersive virtual environment, while traditional CAD tools use 2 D input and output ....

M. R. Mine: "Working in a Virtual World: Interaction Techniques Used in the Chapel Hill Immersive Modeling Program," UNC Chapel Hill Computer Science Technical Report, TR96-029, 1996.

....has a number of advantages. Real time head tracked stereoscopic view improves the traderstanding of shape and spatial relationships. Direct manipulation improves the accessibility to 3 D objects in a quick and intuitive way. For the last decade, a number of immersive modelers have been developed [3, 4, 5, 6], though most of them are only able to construct the shape of virtual objects, not to describe their behavior or geometric constraints. We focus on geometric constraints among a set of properties of reactive 3 D objects as the first step, since most real objects have geometric constraints on ....

....modeling has attracted much attention because of its advantages explained in the next section. For the last decade, a number of immersive modeling systems have been developed; for example, VLEGO [4] the Conceptual Design Space (CDS) 5] and the Chapel Hill Immersive Modeling Program (CHIMP) [6]. However, most of these systems support only constructing 3 D shapes, not imposing geometric constraints on the 3 D shapes. 1. Immersive Modeling Immersive modeling is a technique to design 3 D objects in an immersive virtual environment, while traditional CAD tools use 2 D input and output ....

Mine, M. R., "Working in a Virtual World: Interaction Techniques Used in the Chapel Hill Immersive Modeling Program," UNC Chapel Hill Computer Science Technical Report, TR96-029, 1996.

....objects within a virtual environment has a number of advantages such as a real time stereoscopic view of a 3 D scene and spatial manipulation for 3 D objects. In the last decade, a number of immersive modelers using virtual reality techniques have been developed for rapid prototyping of 3 D objects[1, 2, 3, 4]. However, most of existing immersive modelers are only able to construct the shape of objects. Nowadays, the term 3 D computer graphics design implies not only geometric modeling, but also creating geometric constraints, kinetic constraints, animation, behavior and physical properties. Therefore, ....

Mine, M. R.: "Working in a Virtual World: Interaction Techniques Used in the Chapel Hill Immersive Modeling Program," UNC Chapel Hill Computer Science Technical Report TR96-029, 1996.

....VR systems have been built that support two handed input, but only a few systems use two handed manipulations on a single object. Polyshop [11] uses symmetric two handed tools for rotating, scaling, or stretching objects. Users can also align objects via anchors and constraints. The CHIMP system [12] uses two hands for object scaling. Cutler et al. 6] developed a variety of two handed tools for object positioning tasks. They also presented two versions of a two handed grab tool, which allowed them to orient objects easily using two hands, and to pass objects from one hand to the other. ....

M. R. Mine. Working in a virtual world: Interaction techniques used in the chapel hill immersive modeling program. Technical Report 1996-029, 1996.

....spatial tasks such as picking and manipulating an object. PolyShop [12] concentrates on symmetric two handed techniques for scaling, rotating, and stretching objects and navigating through the scene. Users can also align objects with both hands via anchors and constraints. In the CHIMP system [14], the user performs a unimanual operation for translations and rotations, and a bimanual symmetric movement for scales. Recently work on CHIMP has focused on more asymmetric two handed manipulation[13] Hauptmann has studied how users specify graphical object manipulations with a mixture of ....

....for the Workbench. Coordinated Symmetric Interaction We present five different types of two handed symmetric tools: symmetric scale, slide and turn, turntable, grab and carry, and grab and twirl. The scaling tool shrinks or enlarges objects by moving both hands together or apart, similar to [3, 12, 14]. The slide and turn (Figure 5) allows the user to perform a steering wheel motion on the table top. This tool exploits the fact Figure 4: Closeup of a toolbox containing various tools. Our system supports multiple toolboxes which group similar tasks together. The tools are displayed as 3D icons ....

Mark R. Mine. Working in a virtual world: Interaction techniques used in the chapel hill immersive modeling program. Technical Report 1996-029, 1996.

....user gestures or performs direct manipulation with both hands to navigate around the 3D environment. Additional research in two handed interaction for virtual reality is ongoing in many places and is increasingly based on fluid simultaneous manipulation of 3D objects and widgets with both hands [12] [7] 1 a device that reports its position and orientation relative to fixed source 2 a physical stand in for a virtual object In contrast to this body of prior work,we have concentrated on two handed desktop interfaces for 3D applications because we feel that VR interfaces suffer a number of ....

Mark Mine. Working in a virtual world: Interaction techniques used in the chapel hill immersive modeling program. Technical Report TR96-029, UNC Chapel Hill Computer Science Technical Report, 1996.

....have no problem using the technique. Related Work The principles on which scaled world grab is based have their foundations in the lessons we learned while exploring other forms of remote object manipulation. Originally, for example, we tried the remote manipulation of objects via laser beams [Mine 1996, Mine 1997] and later spotlights, following [Liang 1994] We found, however, that even though these beams extend a user s reach, they are effective only for translations perpendicular to the beam direction and rotations about the beam axis. While it is easy to move an object about in an arc, ....

....arm and the scaling function used. Go go interaction may require different scaling functions in scenes with different distributions of objects (i.e. mostly nearby or faraway) Scaled world grab has some common features with the Worldsin Miniature (WIM) paradigm (see [Pausch 1995, Stoakley 1995, Mine 1996, Mine 1997] and related earlier work in [Teller 1991] in which objects are brought into reach in the form of a miniature copy of the environment floating in front of the user. WIMs have shown excellent promise in areas such as remote object manipulation and wayfinding. With a WIM, users can ....

Mine, M.R. "Working in a Virtual World: Interaction Techniques Used in the Chapel Hill Immersive Modeling Program." University of North Carolina, Technical Report TR96-029

No context found.

M. Mine. Working in a Virtual World: Interaction Techniques used in the Chapel Hill Immersive Modeling Program. Technical report, Department of Computer Science, UNC Chapel Hill, TR96-029, 1996.

No context found.

Mark R Mine. Working in a virtual world: Interaction techniques used in the chapel hill immersive modeling program. Technical Report TR96-029, Department of Computer Science, University of North Carolina, 21, 1996.

No context found.

M.R. Mine, Working in a Virtual World: Interaction Techniques Used in the Chapel Hill Immersive Modeling Program, UNC Chapel Hill Computer Science Technical Report TR96-029, Chapel Hill, N.C., 1996.

No context found.

Mark R. Mine. Working in a virtual world: Interaction techniques used in the chapel hill immersive modeling program. Technical report, University of North Carolina, 1996.

No context found.

Mark R. Mine. Working in a virtual world: Interaction techniques used in the chapel hill immersive modeling program. Technical report, University of North Carolina, 1996.

Online articles have much greater impact   More about CiteSeer.IST   Add search form to your site   Submit documents   Feedback  

CiteSeer.IST - Copyright Penn State and NEC