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Visual Realism Enhances Realistic Response in an Immersive Virtual Environment
Found in: IEEE Computer Graphics and Applications
By Mel Slater, Pankaj Khanna, Jesper Mortensen, Insu Yu
Issue Date:May 2009
pp. 76-84
Does greater visual realism induce greater participant presence in immersive virtual environments (VE)? Presence refers to how realistically participants respond to the environment as well as their subjective sense of being in the place depicted by the VE....
 
Real-Time Global Illumination for VR Applications
Found in: IEEE Computer Graphics and Applications
By Jesper Mortensen, Insu Yu, Pankaj Khanna, Franco Tecchia, Bernhard Spanlang, Giuseppe Marino, Mel Slater
Issue Date:November 2008
pp. 56-64
Real-time global illumination in VR systems enhances scene realism by incorporating soft shadows, reflections of objects in the scene, and color bleeding. The Virtual Light Field (VLF) method enables real-time global illumination rendering in VR. The VLF h...
 
A Visibility Field for Ray Tracing
Found in: Computer Graphics, Imaging and Visualization, International Conference on
By Jesper Mortensen, Pankaj Khanna, Insu Yu, Mel Slater
Issue Date:August 2007
pp. 54-61
This paper presents a type of visibility data structure for accelerated ray tracing. The visibility field is constructed by choosing a regular point subdivision over a hemisphere to obtain a set of directions. Corresponding to each direction there is then ...
 
A Non-parametric Guide for Radiance Sampling in Global Illumination
Found in: Computer Graphics, Imaging and Visualization, International Conference on
By Pankaj Khanna, Mel Slater, Jesper Mortensen, Insu Yu
Issue Date:August 2007
pp. 41-48
Global illumination as described by the radiance and potential equations is essentially a sampling problem. This sampling has two elements: ?where? to sample and ?how? to sample. In this paper we propose an alternative method to non-parametrically simplify...
 
A Virtual Light Field Approach to Global Illumination
Found in: Computer Graphics International Conference
By Mel Slater, Jesper Mortensen, Pankaj Khanna, Insu Yu
Issue Date:June 2004
pp. 102-109
This paper describes an algorithm that provides real-time walkthrough for globally illuminated scenes that contain mixtures of ideal diffuse and specular surfaces. A type of light field data structure is used for propagating radiance outward from light emi...
 
Perceptual influence of approximate visibility in indirect illumination
Found in: ACM Transactions on Applied Perception (TAP)
By Andrew Cox, Carsten Dachsbacher, Insu Yu, Jan Kautz, Min H. Kim, Thorsten Grosch, Tobias Ritschel, Andrew Cox, Carsten Dachsbacher, Insu Yu, Jan Kautz, Min H. Kim, Thorsten Grosch, Tobias Ritschel
Issue Date:September 2009
pp. 1-14
In this article we evaluate the use of approximate visibility for efficient global illumination. Traditionally, accurate visibility is used in light transport. However, the indirect illumination we perceive on a daily basis is rarely of high-frequency natu...
     
Visual Realism Enhances Realistic Response in an Immersive Virtual Environment - Part 2
Found in: IEEE Computer Graphics and Applications
By Insu Yu,J. Mortensen,P. Khanna,B. Spanlang,M. Slater
Issue Date:November 2012
pp. 36-45
Does realistic lighting in an immersive VR application enhance presence - that is, the participants' feeling that they're actually in the scene and behaving accordingly? Part 1 of this study indicated that presence is more likely with real-time ray tracing...
 
Visual realism enhances realistic response in an immersive virtual environment – Part 2
Found in: IEEE Computer Graphics and Applications
By Insu Yu, Jesper Mortensen, Pankaj Khanna, Mel Slater
Publication Date: July 2011
pp. N/A
Does realistic lighting in an immersive virtual reality application enhance presence, where participants feel that they are in the scene and behave correspondingly? Our previous study indicated that presence is more likely with real-time ray tracing compar...
 
Real-time global illumination in the CAVE
Found in: Proceedings of the 2007 ACM symposium on Virtual reality software and technology (VRST '07)
By Insu Yu
Issue Date:November 2007
pp. 145-148
Global illumination in VR applications remains an elusive goal. While it potentially has a positive impact on presence, the significant real-time computation and integration complexities involved have been stumbling blocks. In this paper we present recent ...
     
Presence in response to dynamic visual realism: a preliminary report of an experiment study
Found in: Proceedings of the ACM symposium on Virtual reality software and technology (VRST '06)
By Insu Yu, Jesper Mortensen, Mel Slater, Pankaj Khanna
Issue Date:November 2006
pp. 364-367
This paper describes an experiment that examines the influence of visual realism on reported presence. 33 participants experienced two different renderings of a virtual environment that depicts a pit in the centre of a room, in a head-tracked head-mounted ...
     
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