The Hobbes Software Architecture for Virtual Environment Interface Development

1998 ◽  
Author(s):  
Kapil Dandekar ◽  
James Templeman ◽  
Linda Sibert ◽  
Robert Page
Keyword(s):  
Software Architecture ◽  
Virtual Environment

I-Gate

2011 ◽  
pp. 397-413
Author(s):  
Rummenigge Dantas ◽  
Luiz Marcos Gonçalves ◽  
Claudio Schneider ◽  
Aquiles Burlamaqui ◽  
Ricardo Dias ◽  
...  
Keyword(s):  
Software Architecture ◽  
Virtual Environment ◽  
Cell Phones ◽  
Digital Television ◽  
New Approach ◽  
Exchange Information

We present in this chapter the I-GATE architecture, a new approach, which includes a set of rules and software architecture, to connect users from different interfaces and devices in the same virtual environment, transparently, even with low capacity of resources. The system detects the user resources and provides transformations on the data in order for its visualization in 3D, 2D and textual-only (1D) interfaces. This allows users from any interface to get a connection in the system using any device and to access and exchange information with other users (including ones with other interface types) in a straightforward way, without need to changing hardware or software. We formalize the problem, including modeling, implementation, and usage of the system, also introducing some applications that we have created and implemented in order to evaluate our proposal. We have used these applications in cell phones, PDAs, Digital Television, and heterogeneous computers, using the same architecture, with success.

NPSNET:A Network Software Architecture for LargeScale Virtual Environments

1994 ◽  
Vol 3 (4) ◽  
pp. 265-287 ◽  
Author(s):  
Michael R. Macedonia ◽  
Michael J. Zyda ◽  
David R. Pratt ◽  
Paul T. Barham ◽  
Steven Zeswitz
Keyword(s):  
Software Architecture ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Large Scale ◽  
Network Protocol ◽  
The Internet ◽  
Software Architectures ◽  
Interactive Simulation ◽  
Distributed Interactive Simulation ◽  
Network Software

This paper explores the issues involved in designing and developing network software architectures for large-scale virtual environments. We present our ideas in the context of NPSNET-IV, the first 3-D virtual environment that incorporates both the IEEE 1278 distributed interactive simulation (DIS) application protocol and the IP multicast network protocol for multiplayer simulation over the Internet.

Medical Assessment Test of Extrapersonal Neglect Using Virtual Reality: A Preliminary Study

2020 ◽  
Author(s):  
Daniel Lanzoni ◽  
Andrea Vitali ◽  
Daniele Regazzoni ◽  
Caterina Rizzi
Keyword(s):  
Virtual Reality ◽  
Software Architecture ◽  
Real Time ◽  
Virtual Environment ◽  
Research Work ◽  
Medical Personnel ◽  
Medical Assessment ◽  
Cerebral Lesions ◽  
Head Mounted Display ◽  
Preliminary Study

Abstract The research work presents a preliminary study to create a virtual reality platform for the medical assessment of spatial extrapersonal neglect, a syndrome affecting human awareness of a hemi-space that may be caused by cerebral lesions. Nowadays, the extrapersonal neglect is assessed by using real objects positioned in the space around the patient, with a poor capability of repetition and data gathering. Therefore, the aim of this research work is the introduction of a virtual reality solution based on consumer technology for the assessment of the extrapersonal neglect. By starting from the needs of the involved medical personnel, an online serious-game platform has been developed, which permits to perform a test and a real-time evaluation by means of objective data tracked by exploited technologies, i.e. an HTC Vive Pro head mounted display and ad-hoc IT solutions. The test is based on a virtual environment composed by a table on which twenty objects have been placed, ten on the right side and ten on the left side. The whole 3D virtual environment has been developed using low-cost and free development tools, such as Unity and Blender. The interaction with the virtual environment is based on voice recognition technology, therefore the patient interact with the application by pronouncing the name of each object aloud. The VR application has been developed according to an online gaming software architecture, which permits to share the 3D scene by exploiting a Wi-Fi hotspot network. Furthermore, the on-line gaming software architecture allows sending and receiving data between the doctor’s laptop and the VR system used by the patient on another laptop. The therapist can see through his/her personal computer a real time faithful replica of the test performed by the patient in order to have a fast feedback on patient’s field of view orientation during the evaluation of 3D objects. A preliminary test has been carried out to evaluate the ease of use for medical personnel of the developed VR platform. The big amount of recorded data and the possibility to manage the selection of objects when the voice commands are not correctly interpreted has been greatly appreciated. The review of the performed test represents for doctors the possibility of objectively reconstructing the improvements of patients during the whole period of the rehabilitation process. Medical feedback highlighted how the developed prototype can already be tested involving patients and thus, a procedure for enrolling a group of patients has been planned. Finally, future tests have been planned to compare the developed solution with the Caterine Bergero Scale to define a future standardization.

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