scholarly journals Crowd Rendering Optimization for Virtual Heritage System

2009 ◽  
Vol 8 (3) ◽  
pp. 57-62 ◽  
Author(s):  
Mohd Shahrizal Sunar ◽  
Mohamed Adi Bin Mohamed Azahar ◽  
Mohd Khalid Mokhtar ◽  
Daut Daman
Keyword(s):  
Virtual Environment ◽  
Crowd Simulation ◽  
Research Needs ◽  
Complex Environment ◽  
Computation Cost ◽  
Acceleration Techniques ◽  
Virtual Heritage

Previously, crowd simulation plays small part or probably ignored in virtual heritage. Architectures or artifacts bit more focused to be reconstructed into virtual environment. By inserting crowd into simulation of virtual heritage, it will give more impact and achieve higher realism level to the reconstructed site. Before inserting the crowd into virtual environment, a research needs to be done to manage the complex environment of virtual heritage and the crowd itself. This paper presents a framework with a vision to reduce the computation cost for rendering crowd simulation in virtual heritage environment while maintaining realisms of the scene. We first review the existing acceleration techniques applied on crowd rendering. Then we introduce a framework that will integrate acceleration techniques for crowd simulation in virtual heritage.

DEVELOPMENT OF VIRTUAL TRADITIONAL HOUSE FOR INTERACTIVE REAL-TIME NAVIGATION

2015 ◽  
Vol 75 (3) ◽  
Author(s):  
Juliana A. Abu Bakar ◽  
Chew Shiaujing ◽  
Ooi Wooisim ◽  
Pang Chongmeng ◽  
Hafizatul H. Abdrahman ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Real Time ◽  
Virtual Environment ◽  
Three Dimensional ◽  
User Evaluation ◽  
Design And Development ◽  
Historical Information ◽  
Visual Aesthetics ◽  
Virtual Heritage ◽  
Future Work

Virtual heritage is able to provide visual aesthetics, real-time navigation and interaction to impress and entertain users. This article describes the design and development of three dimensional (3D) virtual heritage to view and navigate the 3D representation of Malay traditional house which is rare to be found today. The Virtual Traditional House allows flexible exploration with real-time navigation in order for users to walkthrough the 3D reconstruction of the house while viewing relevant historical information at certain parts of the house. The process of design and development of Virtual Traditional House is outlined and points of particular importance are explained. The article discusses the preliminary results of user evaluation for Virtual Traditional House. Future work includes extensive user evaluation and to what extend user may absorb the historical information surfaced around the virtual environment.

scholarly journals Recent Advances on Human Crowd Simulation

2010 ◽  
Vol 9 (3) ◽  
pp. 27-32 ◽  
Author(s):  
Tianlu Mao ◽  
Hao Jiang ◽  
Shihong Xia ◽  
Zhaoqi Wang
Keyword(s):  
Virtual Environments ◽  
Large Scale ◽  
New Technology ◽  
Crowd Simulation ◽  
Semantic Description ◽  
Complex Environment ◽  
Research Topics ◽  
Public Buildings ◽  
Human Crowd ◽  
Human Flow

Human crowd simulation is a new technology in the virtual reality field. Since it could simulate evacuation, it has strong demands in risk assessment for public buildings. In this paper we discuss the development of the main related research topics, including semantic description for virtual environments and crowd models which generate continuum human flow. Additionally, we introduce a system named Guarder that is designed for human crowd simulation and is suit for simulating evacuation in public buildings. We also demonstrate some simulation results of Guarder to show that it could efficiently simulate evacuation in a large-scale and complex environment.

Research on Manipulator Positioning Based on Stereo Vision in Virtual Environment

2008 ◽  
Vol 392-394 ◽  
pp. 200-204 ◽  
Author(s):  
Xiang Jun Zou ◽  
Hai Xin Zou ◽  
J. Lu ◽  
Yan Chen ◽  
Ai Xia Guo ◽  
...  
Keyword(s):  
Virtual Environment ◽  
Stereo Vision ◽  
Simulation System ◽  
Simulation Software ◽  
Complex Environment ◽  
Environment Modeling ◽  
Long Distance ◽  
Experimental Platform ◽  
Binocular Stereo Vision ◽  
Binocular Stereo

Inherent uncertainties always exist in the positioning picking manipulators in complex environment, modeling and simulation of positioning. The manipulators were discussed based on binocular stereo vision in virtual environment (VE). Based on stereo vision, a method how virtual manipulators locate picking object by human-computer interaction (HCI) was proposed. The data input from vision were mapped to virtual picking manipulators so that it could enable the positioning and simulation with route and events-driven mechanism. The positioning experimental platform in VE consists of hardware of CCD stereo vision and simulation software. The visualized simulation system was exploited by EON SDK. The simulation of manipulator’s positioning was realized in VE by the platform. This method can be used for virtual robot to locate objects’ long-distance positioning in complex environment.

Immersive Computing and Crowd Simulation Techniques in Modelling Urban Commons

2019 ◽  
Vol 8 (1) ◽  
pp. 35-49 ◽  
Author(s):  
Georgios Artopoulos ◽  
Panayiotis Charalambous ◽  
Colter Eugene Wehmeier
Keyword(s):  
Virtual Environment ◽  
Crowd Simulation ◽  
Technical Note ◽  
Small Scale ◽  
Computational Technique ◽  
Simulation Techniques ◽  
Urban Modelling ◽  
The Right ◽  
The Impact ◽  
Historic City

This article reports on the technical development and testing of the basic components of a virtual environment platform that could be used for the cross-disciplinary study of complex urban realities, such as the historic city of Nicosia, Cyprus - the last divided capital of Europe. This platform captures data of virtual visitors' movements in space, and the article suggests that these data could help better understand the impact of planning scenarios and design interventions in open public spaces that used to be popular among the citizens of the historic city. The article presents how this platform uses interaction and immersion opportunities to engage citizens and stakeholders in the management of public open spaces that are associated with built heritage. Crowd simulation is discussed as a computational technique that when is combined with the presented virtual environment platform, and under the right conditions, would contribute to a digital practice for small-scale urban modelling. However, it is beyond the scope of this technical note to provide a full empirical testing and validation of the presented immersive virtual environment.

scholarly journals Multilevel Model of the 3D Virtual Environment for Crowd Simulation in Buildings

2014 ◽  
Vol 32 ◽  
pp. 822-827 ◽  
Author(s):  
Stéphane Galland ◽  
Nicolas Gaud ◽  
Jonathan Demange ◽  
Abderrafiaa Koukam
Keyword(s):  
Virtual Environment ◽  
Multilevel Model ◽  
Crowd Simulation ◽  
3D Virtual Environment

Study on Location Simulation for Picking Manipulator in Virtual Environment Based on Information Fusion of Multi-Sensor

2008 ◽  
Vol 392-394 ◽  
pp. 596-600 ◽  
Author(s):  
Hong Jun Wang ◽  
Xiang Jun Zou ◽  
D.J. Zou ◽  
J. Liu ◽  
Tian Hu Liu
Keyword(s):  
Data Collection ◽  
Virtual Environment ◽  
Information Fusion ◽  
Distribution System ◽  
3D Model ◽  
Simulation System ◽  
Laser Sensor ◽  
Fusion Method ◽  
Complex Environment ◽  
Sensor Information

In picking manipulator location system, it is the key problem that the positions of obi-object and picking manipulator are exactly determined in complex environment. Based on multi-sensor information fusion method, a data fusion system of multi-sensor integrating laser-sensor for absolute location with ultrasonic-sensor for inspection impediment was presented. Firstly, data collection and fusion were implemented employing a two- level distribution system. Secondly, the method of data collection and fusion in virtual environment was discussed, and the result data could drive picking manipulator 3D model to dynamically move in real-time using event and route mechanisms provided by virtual environment, which could simulate the process of picking manipulator being accurately located. Finally, a location simulation system was developed by VC++ and EON SDK.

Social symbol grounding and language evolution

2007 ◽  
Vol 8 (1) ◽  
pp. 31-52 ◽  
Author(s):  
Paul Vogt ◽  
Federico Divina
Keyword(s):  
Virtual Environment ◽  
Communication System ◽  
Language Evolution ◽  
Symbol Grounding ◽  
Complex Environment ◽  
Learning Mechanisms ◽  
The Social ◽  
Symbol Grounding Problem ◽  
Grounding Problem ◽  
Large Populations

This paper illustrates how external (or social) symbol grounding can be studied in simulations with large populations. We discuss how we can simulate language evolution in a relatively complex environment which has been developed in the context of the New Ties project. This project has the objective of evolving a cultural society and, in doing so, the agents have to evolve a communication system that is grounded in their interactions with their virtual environment and with other individuals. A preliminary experiment is presented in which we investigate the effect of a number of learning mechanisms. The results show that the social symbol grounding problem is a particularly hard one; however, we provide an ideal platform to study this problem.

Understanding Limited Use of Amplification in Infants and Children Who Are Hard of Hearing

2015 ◽  
Vol 25 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Ryan W. McCreery ◽  
Elizabeth A. Walker ◽  
Meredith Spratford
Keyword(s):  
Hard Of Hearing ◽  
Hearing Aid ◽  
Management Strategies ◽  
Infants And Children ◽  
Future Research ◽  
Research Needs ◽  
Case Examples ◽  
Hearing Aid Use ◽  
Wide Range ◽  
In Infants And Children

The effectiveness of amplification for infants and children can be mediated by how much the child uses the device. Existing research suggests that establishing hearing aid use can be challenging. A wide range of factors can influence hearing aid use in children, including the child's age, degree of hearing loss, and socioeconomic status. Audiological interventions, including using validated prescriptive approaches and verification, performing on-going training and orientation, and communicating with caregivers about hearing aid use can also increase hearing aid use by infants and children. Case examples are used to highlight the factors that influence hearing aid use. Potential management strategies and future research needs are also discussed.

Locus of Control, Safety Attitudes and Involvement in Hazardous Events in Indian Army Aviators

2013 ◽  
Vol 3 (1) ◽  
pp. 9-18 ◽  
Author(s):  
Catherine Joseph ◽  
Suhasini Reddy ◽  
Kanwal Kashore Sharma
Keyword(s):  
Locus Of Control ◽  
Future Research ◽  
Research Needs ◽  
Negative Attitudes ◽  
Human Errors ◽  
Safety Attitudes ◽  
Positive Correlation ◽  
Self Confidence

Locus of control (LOC), safety attitudes, and involvement in hazardous events were studied in 205 Indian Army aviators using a questionnaire-based method. A positive correlation was found between external LOC and involvement in hazardous events. Higher impulsivity and anxiety, and decreased self-confidence, safety orientation, and denial were associated with a greater number of hazardous events. Higher external LOC was associated with higher impulsivity, anxiety, and weather anxiety and with lower self-confidence, safety orientation, and denial. Internal LOC was associated with increased self-confidence, safety orientation, and denial. Hazardous events and self-confidence were higher in those involved in accidents than those not involved in accidents. Future research needs to address whether training can effectively modify LOC and negative attitudes, and whether this would cause a reduction in, and better management of, human errors.

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