Natural Interaction With Pedagogical Agents in Virtual Environments

2002 ◽  
Author(s):  
W. L. Johnson
Keyword(s):  
Virtual Environments ◽  
Pedagogical Agents ◽  
Natural Interaction

scholarly journals Natural interaction in Virtual Environments for Cultural Heritage: Giotto in 3D and Etruscanning study cases

2012 ◽  
Vol 3 (7) ◽  
pp. 86 ◽  
Author(s):  
Eva Pietroni ◽  
Claudio Rufa
Keyword(s):  
Cultural Heritage ◽  
Virtual Environments ◽  
Cultural Transmission ◽  
Scientific Community ◽  
Body Movements ◽  
Natural Interaction ◽  
Natural Interfaces ◽  
Virtual Experience ◽  
Cultural Sites

<p>A basic limit of most of VR applications created by the scientific community and reproducing cultural sites or artefacts is that they do not fire up the attention of public, in comparison with the great potentialities of VR system for cultural transmission: they are often lacking in emotional storytelling and difficult to manage. An important factor is the need of more natural and simple interfaces, especially for applications hosted inside museums. Starting from our experience in this domain, we propose new metaphors of narration and paradigm of interaction based on natural interfaces (body movements), presenting three study cases: “The Rule confirmation: virtual experience among Giotto's characters”, “Etruscanning3D”, “Virtual Exploration of the ancient Pharmacy of S. Maria della Scaletta Hospital at Imola”.</p>

Virtual Hand Representations to Support Natural Interaction in Immersive Environments

2013 ◽  
Author(s):  
Meisha Rosenberg ◽  
Judy M. Vance
Keyword(s):  
Virtual Environments ◽  
Human Interaction ◽  
Position Tracking ◽  
Interaction Techniques ◽  
Computing Technology ◽  
Natural Interaction ◽  
Design Concepts ◽  
Virtual Hand ◽  
Hand Model ◽  
Virtual Simulations

Immersive Computing Technology (ICT) offers designers the unique ability to evaluate human interaction with product design concepts through the use of stereo viewing and 3D position tracking. These technologies provide designers with opportunities to create virtual simulations for numerous different applications. In order to support the immersive experience of a virtual simulation, it is necessary to employ interaction techniques that are appropriately mapped to specific tasks. Numerous methods for interacting in various virtual applications have been developed which use wands, game controllers, and haptic devices. However, if the intent of the simulation is to gather information on how a person would interact in an environment, more natural interaction paradigms are needed. The use of 3D hand models coupled with position-tracked gloves provide for intuitive interactions in virtual environments. This paper presents several methods of representing a virtual hand model in the virtual environment to support natural interaction.

Integrating Pedagogical Agents into Virtual Environments

1998 ◽  
Vol 7 (6) ◽  
pp. 523-546 ◽  
Author(s):  
W. Lewis Johnson ◽  
Jeff Rickel ◽  
Randy Stiles ◽  
Allen Munro
Keyword(s):  
Virtual Environments ◽  
Virtual Environment ◽  
Autonomous Agents ◽  
Pedagogical Agents ◽  
Agent Based ◽  
Training Tool ◽  
Instructional Objectives ◽  
Architectural Features ◽  
Based Instruction

In order for a virtual environment to be effective as a training tool, it is not enough to concentrate on the fidelity of the renderings and the accuracy of the simulated behaviors. The environment should help trainees develop an understanding of the task and should provide guidance and assistance as needed. This paper describes a system for developing virtual environments in which pedagogical capabilities are incorporated into autonomous agents that interact with trainees and simulations of objects in the environment. These pedagogical agents can monitor trainee progress and provide guidance and assistance. This paper describes the architectural features of the environment and of the agents that accomplish the instructional objectives within the virtual environment. It also discusses how agent-based instruction is combined with other methods of delivering instruction.

A Techinque Based on Muscular Activation for Interacting With Virtual Environments

2011 ◽  
Author(s):  
Paolo Belluco ◽  
Monica Bordegoni ◽  
Umberto Cugini
Keyword(s):  
Virtual Reality ◽  
Virtual Environments ◽  
Large Scale ◽  
Muscular Activity ◽  
Virtual Space ◽  
Interaction Technique ◽  
Natural Interaction ◽  
And Training ◽  
Muscular Activation ◽  
Semg Signals

Interacting with computers by using the bodily motion is one of the challenging topics in the Virtual Reality field, especially as regards the interaction with large scale virtual environments. This paper presents a device for interacting with a Virtual Reality environment that is based on the detection of the muscular activity and movements of the user by the fusion of two different signals. The idea is that through muscular activities a user is capable of moving a cursor in the virtual space, and making some actions through gestures. The device is based on an accelerometer and on electromyography, a technique that derives from the medical field and that is able to recognize the electrical activity produced by skeletal muscles during their contraction. The device consists of cheap and easy to replicate components: seven electrodes pads and a small and wearable board for the acquisition of the sEMG signals from the user’s forearm, a 3 DOF accelerometer that is positioned on the user’s wrist (used for moving the cursor in the space) and a glove worn on the forearm in which these components are inserted. The device can be easily used without tedious settings and training. In order to test the functionality, performances and usability issues of the device we have implemented an application that has been tested by a group of users. Specifically, the device has been used as natural interaction technique in an application for drawing in a large scale virtual environment. The muscular activity is acquired by the device and used by the application for controlling the dimension and color of the brush.

Avatars, Pedagogical Agents, And Virtual Environments: Social Learning Systems Online

2009 ◽  
Vol 5 (4) ◽  
pp. 1-13 ◽  
Author(s):  
Lynna J. Ausburn ◽  
◽  
Jon Martens ◽  
Gary Dotterer ◽  
Pat Calhoun ◽  
...  
Keyword(s):  
Social Learning ◽  
Virtual Environments ◽  
Learning Systems ◽  
Pedagogical Agents

scholarly journals FarMyo: A Serious Game for Hand and Wrist Rehabilitation Using a Low-Cost Electromyography Device

2019 ◽  
Vol 6 (2) ◽  
pp. 3-19 ◽  
Author(s):  
Thiago V. V. Batista ◽  
Liliane dos Santos Machado ◽  
Ana Maria Gondim Valença ◽  
Ronei Marcos de Moraes
Keyword(s):  
Virtual Environments ◽  
Serious Games ◽  
Low Cost ◽  
Real Life ◽  
Recognition System ◽  
Serious Game ◽  
User Performance ◽  
Natural Interaction ◽  
Rehabilitation Process ◽  
Motor Problems

One of the strategies used in recent years to increase the commitment and motivation of patients undergoing rehabilitation is the use of graphical systems, such as virtual environments and serious games. In addition to contributing to the motivation, these systems can simulate real life activities and provide means to measure and assess user performance. The use of natural interaction devices, originally conceived for the game market, has allowed the development of low cost and minimally invasive rehabilitation systems. With the advent of natural interaction devices based on electromyography, the user's electromyographic data can also be used to build these systems. This paper shows the development of a serious game focused on aiding the rehabilitation process of patients with hand motor problems, targeting to solve problems related to cost, adaptability and patient motivation in this type of application. The game uses an electromyography device to recognize the gestures being performed by the user. A gesture recognition system was developed to detect new gestures, complementing the device's own recognition system, which is responsible for interpreting the signals. An initial evaluation of the game was conducted with professional physiotherapists.

The sense of presence in virtual environments:

2003 ◽  
Vol 15 (2) ◽  
pp. 69-71 ◽  
Author(s):  
Thomas W. Schubert
Keyword(s):  
Virtual Environments ◽  
Coding Theory ◽  
Model Building ◽  
Self Report ◽  
Survey Study ◽  
Spatial Presence ◽  
Component Structure ◽  
Sense Of Presence ◽  
Being There ◽  
Measure Sense

Abstract. The sense of presence is the feeling of being there in a virtual environment. A three-component self report scale to measure sense of presence is described, the components being sense of spatial presence, involvement, and realness. This three-component structure was developed in a survey study with players of 3D games (N = 246) and replicated in a second survey study (N = 296); studies using the scale for measuring the effects of interaction on presence provide evidence for validity. The findings are explained by the Potential Action Coding Theory of presence, which assumes that presence develops from mental model building and suppression of the real environment.

Dreamlike and Playful Virtual Environments to Inspire Children’s Divergent Thinking

2020 ◽  
pp. 1-11
Author(s):  
Jérôme Guegan ◽  
Claire Brechet ◽  
Julien Nelson
Keyword(s):  
Virtual Environments ◽  
Divergent Thinking ◽  
Idea Generation ◽  
Combined Processes ◽  
Office Environment ◽  
School Aged Children

Abstract. Computers have long been seen as possible tools to foster creativity in children. In this respect, virtual environments present an interesting potential to support idea generation but also to steer it in relevant directions. A total of 96 school-aged children completed a standard divergent thinking task while being exposed to one of three virtual environments: a replica of the headmistress’s office, a replica of their schoolyard, and a dreamlike environment. Results showed that participants produced more original ideas in the dreamlike and playful environments than in the headmistress’s office environment. Additionally, the contents of the environment influenced the selective exploration of idea categories. We discuss these results in terms of two combined processes: explicit references to sources of inspiration in the environment, and the implicit priming of specific idea categories.

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