D.P. Mapes and J.M. Moshell. A two handed interface for object manipulation in virtual environments. Presence, 4(4):403--416, 1995.  Home/Search   Document Not in Database   Summary   Related Articles   Check

.... be reproduced in virtual environment with the first generation of digital glove due to high noise to signal ratio and missing degrees of freedom (e.g. no lateral opening in DataGlove ) Although a digital glove can properly translate the posture of the user hand when calibrated [Sp92] RH94] [MM95] it lacks bilateral force coupling. So, manipulating a virtual object with a virtual hand is generally accomplished by means of command coding through posture or gesture recognition [SZF89] In such a context the user has to rely enormously on the visual feedback to assert the good or bad ....

....the feasibility of this substitution with and without time delay. The proposed sensory substitution is justified in the studied teleoperation context where the operator s visual system is not available because it is used for viewing the remote task environment on a television monitor. In [MM95], the authors propose a two handed input based on the information of the position and orientation of both hands (with their custom ChordGlove associated with Polhemus Fastrack sensors) They demonstrated the ability to apply simple transformations to rigid objects (translate,rotate,scale, etc) In ....

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Mapes D.P., Moshell J.M. (1995) "A Two-Handed Interface for Object Manipulation in Virtual Environments", Presence 4(4), Fall 1995, pp403-416, The Massachusetts Institute of Technology.

....less dominant hand is more than a poor approximation of the dominant hand. Kabbash et at. showed that the less dominant hand performed as same ability as the dominant hand for relatively large targets and large distance in pointing and dragging tasks [6] According to the previous works [6, 7, 8, 9, 10] and our observation through the experiment described later, it was confirmed that two handed interaction improves the efficiency of human computer interaction in a number of ways as follows. Users can perform various tasks with flexible and efficient ways because he she is able to set multiple ....

Mapes, D. P. and Moshell, J. M.: A Two-Handed Interface for Object Manipulation in Virtual Environments, PRESENCE: Teleoperators and Virtual Environments, Vol.4, No.4, 403-416, 1995.

....of the objects behavior. We demonstrate our system using an assembly task and discuss our experiences. 2 Related Work In the past few years, several 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 ....

D. P. Mapes and J. M. Moshell. A two-handed interface for object manipulation in virtual environments. Presence, 4(4):403--416, 1995.

....Pinch Gloves TM. Although we know of no published work in which Pinch Gloves TM were used for menus, they have been used for other purposes within VEs. Pierce [17] uses the gloves for novel selection and manipulation techniques, using different fingers for different functions. The PolyShop system [18] also used gloves for various operations, including viewpoint movement, object placement and scaling, and command selection (with a menu similar to the floating menus described above, where the gloves were simply used to touch the desired selection) Finally, LaViola [19] has prototyped a pair of ....

Mapes, D. and J. Moshell, A Two-Handed Interface for Object Manipulation in Virtual Environments. Presence: Teleoperators and Virtual Environments, 1995. 4(4): p. 403416.

....polygonal surfaces such as terrains. THRED uses two 6 DOF Polhemus trackers with added buttons for input. The division of labor is as follows: the non dominant hand controls the interaction mode while the dominant hand handles 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 ....

....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 ....

Daniel P. Mapes and J. Michael Moshell. A two-handed interface for object manipulation in virtual environments. Presence, 4(4):403--416, 1995.

....a recording. MSVT solves the problem by taking advantage of the concurrent multimodal input combination style of speaking and direct manipulation. NAVIGATION Users navigate through the virtual environment with two possible interaction tools. Based on Multigen s SmartScene navigation techniques [20, 21], users can pull themselves through the virtual world by pinching the thumb and middle finger on either hand and grabbing a point in space. Translation is not constrained so movements in x, y,andz can be made. When the users invoke the technique with one hand after the other, they can virtually ....

D. J. Mapes, and M. J. Moshell. A Two-Handed Interface for Object Manipulation in Virtual Environments. In PRESENCE: Teleoperators a nd Virtual Environments,

....the tracked physical paint brush moves around, its position and orientation are reflected on a 3D virtual brush icon. The size of the stroke being created is represented by the size of the brush icon and is controlled by rotating a knob on the painting table or by using a tracked pinch glove [1] [19] worn on the non dominant hand. 4.2 Assigning a Stroke Type to the Brush To select the type of stroke to paint, the artist simply dips the physical paint brush into a cup (located on the painting table shown in Figure 3) that contains the desired stroke. This interface is similar in style to ....

....whenever the user turns his or her hand so that the palm faces up. 4.6 Navigation For small translations, a tracked pinch glove is used on the nondominant hand. The user grabs the world by pinching together the thumb and the ring finger, and then drags the world around by moving the hand [1] [19]. This is often used for quickly positioning an object in the correct area to continue painting it, although, it can also be used, as mentioned above, to move the world while painting to create very long strokes. For large translations, the user taps a foot pedal located on the floor of the Cave ....

D. P. Mapes and J. M. Moshell. A two-handed interface for object manipulation in virtual environments. Presence, 4(4):403--416, 1995.

....and gesture de nitions. 5 6 reachany visible destination in one gesture, and the second allows them to view the object from all sides by simply twisting the wrist while still in grab mode. Another approachto navigation is virtual walking developed for Multigen s SmartScene ## application [87, 98]. With this technique, users pull themselves through the environmentby pinching space, one hand after the other. When they pinch with both hands simultaneously, rotation, scaling, and translation operations can be performed with one movement. The most traditional methods for selecting and ....

....as occlusion. Therefore, we focus on the invasive approach instead, quadrants IT and IG. With the invasive approach, twotypes of glove based input devices have been developed. The rst, bend sensing gloves [103, 142, 155] the IG quadrant) measure nger jointmovement, and second, the Pinch Glove [42, 87] (the IT quadrant) detect electrical contacts between each of the nger tips. Unfortunately, both bend sensing and pinch gloves have faults when used in isolation. Bend sensing gloves are good at extracting geometrical information which enables them to represent the user s hands in the virtual ....

[Article contains additional citation context not shown here]

Mapes, Daniel J., and Michael J. Moshell. A Two-Handed Interface for Object Manipulation in Virtual Environments. In PRESENSE: Teleoperators and Virtual Environments, 4(4):403-416, 1995.

.... et al. 1994] Maintenance: Wilson, et al. 1995] Wayfinding: Witmer, et al. 1995] Visualization of unrealized or unseeable objects Architecture: Brooks 1986] Fluid Flow: Bryson and Levit 1992] Nano surfaces: Taylor, et al. 1993] Design 3D models: Butterworth, et al. 1992] Cityscapes: [Mapes and Moshell 1995] Table 1: Successful Virtual World Application Domains Figure 1: The precise manipulation of objects is hard in virtual environments. The number of successful virtual environment applications, however, still remains small, with even fewer applications having gone beyond the research laboratory. ....

....current gaze direction instead of the orientation of his head. 4.3. 3 Two handed flying Numerous results have been published about the benefits of twohanded input in interactive applications (see for example [Buxton and Myers 1986, Bier, et al. 1993, Shaw and Green 1994, Goble, et al. 1995, Mapes and Moshell 1995, Cutler, et al. 1997, Zeleznik, et al. 1997] We have found two handed flying to be an effective technique for controlled navigation through an environment. In two handed flying, the direction of flight is controlled by the vector between the user s two hands, and the speed of flight is based on ....

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D. P. Mapes and J. M. Moshell (1995). "A Two-Handed Interface for Object Manipulation in Virtual Environments." Presence 4(4): 403-416.

....a frame of reference within which the dominant hand works, and that the non dominant hand is good at large, coarse grained manipulation, while the dominant hand excels at fine grained work. These principles have been applied to several non immersive 3D applications (e.g. Goble et al., 1995, Mapes and Moshell, 1995), with encouraging results. We feel that the use of two handed interfaces in immersive VEs is quite promising, and therefore will include two handed techniques in our design and evaluation. 2.3 Perceptual and Cognitive Psychology Concepts Since our research focuses on human performance when ....

Mapes, D. and Moshell, J. (1995). A Two-Handed Interface for Object Manipulation in Virtual Environments. Presence: Teleoperators and Virtual Environments, 4(4), 403-416.

....exaggerate object size, appearance, interobject distances, etc. 59 [Gibson, 1986] Mine et al. 1997] Select3 Facilitate selection of multiple objects 59 [Templeman, 1997b] Select4 Use bounding boxes, marquees, rubber bands,etc. for multiple selections based on spatial relationships 59 [Mapes and Moshell, 1995] Select5 Use non direct manipulation means (such as query based selection) when selection criteria are temporal, descriptive, or relational 60, 72 Select6 Supply users with appropriate selection feedback (e.g. highlighting, outlining, acoustic or verbal confirmation) 60 Select7 Use ....

.... et al. 1989] Manip3 Support multimodal interaction 67 [Wickens and Baker, 1995] Brooks et al. 1990] Manip4 Provide spatially relevant and revealing user point of view 67 [Wickens and Baker, 1995] Mine et al. 1997] Manip5 Avoid non intuitive, unnatural, or poorly mapped gesturing 67 [Mapes and Moshell, 1995] Manip6 When using pinch gloves, keep in mind user experience when determining the number of modes or pinching combinations 68 Manip7 Support two handed interaction (especially for manipulation based tasks) 40, 68 [Hauptmann, 1989] Hinckley et al. 1994a] Guiard, 1987] Manip8 For ....

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Mapes, D. P. and Moshell, J. M. (1995). A two-handed interface for object manipulation in virtual environments. Presence: Teleoperators and Virtual Environments, 4(4):403-- 416.

....tool to modify the existing model or create new geometry. 3.3 Device Layout Supporting Two handed Interaction There are many situations where two handed interaction is more effective than one handed interaction. Recent work has demonstrated the benefits of this style of interaction [3] 7][14] [16] 19] Our layout of physical devices around the ActiveDesk encourages several types of two handed interactions. When the user is drawing with the lightpen, the non dominant hand can manipulate a trackball which can be used to rotate and zoom the camera view with respect to the lightpen. When ....

Mapes, D. J., and Moshell, M. J., "A Two-Handed Interface for Object Manipulation in Virtual Environments. " PRESENSE Teleoperators and Virtual Environments, 4(4), pp. 403-416, Fall 1995.

.... skills Surgery: Hunter 1993] Military : Macedonia 1994] Maintenance: Wilson 1995] Wayfinding: Witmer 1995] Visualization of unrealized or unseeable objects Architecture: Brooks 1986] Fluid Flow: Bryson 1992] Nano surfaces: Taylor 1993] Design 3D models: Butterworth 1992] Cityscapes: [Mapes 1995] Table 1: Successful Virtual World Application Domains The number of successful virtual environment applications, however, still remains small, with even fewer applications having gone beyond the research laboratory. Why Many of these successes fall within the realm of spatial visualization. The ....

....at it. To confirm selection, the user presses a physical button or, with pull down menus, releases the menu. Figure 4: Look at menu. 4.3. 3 Two handed flying Numerous results describe the benefits of two handed input in interactive applications ( Buxton 1986, Bier 1993, Shaw 1994, Goble 1995, Mapes 1995, Cutler 1997, Zeleznik 1997] and [Guiard 1987] for more theoretical foundations) We have found two handed flying an effective technique for controlled locomotion. The direction of flight is specified by the vector between the user s two hands, and the speed is proportional to the user s hand ....

[Article contains additional citation context not shown here]

Mapes, D.P. and J.M. Moshell. "A Two-Handed Interface for Object Manipulation in Virtual Environments." Presence 4(4): 403-416.

....worked closely with actual architects and members of the College of Architecture at Georgia Tech. In the Polyshop system, developed at University of Central Florida s Institute for Simulation and Training, two hands are used to scale, rotate, and translate objects within the virtual world (see [Mapes and Moshell 1995]) Users select specific modes of operations using two ChordGloves, which provide a discrete form of gesture recognition. ChordGloves have separate electrical contacts at the end of each finger and on each palm. Different gestures consist of different chord patterns of electrical contacts. Dan ....

D. P. Mapes and J. M. Moshell (1995). "A TwoHanded Interface for Object Manipulation in Virtual Environments." Presence 4(4): 403-416.

.... by the DH is used for more precise picking and fine manipulation (high frequency temporal spatial scales of motion) Two handed interaction is increasingly used in immersive virtual reality (VR) environments, with the current state ofthe art exemplified by MultiGen s SmartScene product [11]. A user wears two data gloves in their system in order to perform a variety of 3D operations and gestures. There are four styles of interaction in SmartScene : 1) the user gestures with either or both hands to perform an operation or enter an interaction mode; 2) the user holds a menu in the NDH ....

....by the NDH maintains pick correlation. 4 In situations where there is no pickable background, Sketch assumes a default surface which can result in non obvious manipulations. 5 This technique is similar to the orbit and zoom technique found in the immersive VR SmartScene Application by MultiGen [11]. ffl Rotate the camera around the normal to the ground until the point selected by the DH cursor most closely maintains pick correlation. ffl Scale the the camera s film plane by the ratio of the distance between the two selected points to the distance between the two cursors. ffl Translate ....

D. P. Mapes and J. M. Moshell. A two-handed interface for object manipulation in virtual environments. Presence, 4(4):403--416, 1995.

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D.P. Mapes and J.M. Moshell. A two handed interface for object manipulation in virtual environments. Presence, 4(4):403--416, 1995.

No context found.

Mapes, Daniel J., and Michael J. Moshell. A Two-Handed Interface for Object Manipulation in Virtual Environments. In PRESENSE: Teleoperators and Virtual Environments, 4(4):403-416, 1995.

No context found.

D.P. Mapes and J.M. Moshell. A two handed interface for object manipulation in virtual environments. Presence, 4(4):403--416, 1995.

No context found.

Mapes, D., Moshell, J. M., "A Two-Handed Interface for Object Manipulation in Virtual Environments," Presence, 4 (4), Fall 1995, pp. 403-416.

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