Searched for: author%3A%22Heynderickx%2C+I.%22
(1 - 15 of 15)
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Qu, C. (author), Ling, Y. (author), Heynderickx, I. (author), Brinkman, W.P. (author)
Bystanders in a real world's social setting have the ability to influence people’s beliefs and behavior. This study examines whether this effect can be recreated in a virtual environment, by exposing people to virtual bystanders in a classroom setting. Participants (n = 26) first witnessed virtual students answering questions from an English...
journal article 2015
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Ling, Y. (author), Nefs, H.T. (author), Nexhmedin, M. (author), Heynderickx, I. (author), Brinkman, W.P. (author)
In virtual reality exposure therapy (VRET) for anxiety disorders, sense of presence in the virtual environment is considered the principal mechanism that enables anxiety to be felt. Existing studies on the relation between sense of presence and level of anxiety, however, have yielded mixed results on the correlation between the two. In this meta...
journal article 2014
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Zhu, Y. (author), Heynderickx, I. (author), Redi, J.A. (author)
In the past decades, a lot of effort has been invested in predicting the users’ Quality of Visual Experience (QoVE) in order to optimize online video delivery. So far, the objective approaches to measure QoVE have been mainly based on an estimation of the visibility of artifacts generated by signal impairments at the moment of delivery and on a...
conference paper 2014
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Ling, Y. (author), Nefs, H.T. (author), Brinkman, W.P. (author), Qu, C. (author), Heynderickx, I. (author)
In this paper we report two experiments in which the effect of perspective projection on presence and space perception was investigated. In Experiment 1, participants were asked to score a presence questionnaire when looking at a virtual classroom. We manipulated the vantage point, the viewing mode (binocular versus monocular viewing), the...
journal article 2013
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Alers, H. (author), Redi, J. (author), Liu, H. (author), Heynderickx, I. (author)
Manufacturers of commercial display devices continuously try to improve the perceived image quality of their products. By applying postprocessing techniques on the incoming signal, they aim to enhance the quality level perceived by the viewer. These postprocessing techniques are usually applied globally over the whole image but may cause side...
journal article 2013
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Liu, H. (author), Koonen, J. (author), Fuderer, M. (author), Heynderickx, I. (author)
In current magnetic resonance (MR) imaging systems, design choices are confronted with a trade-off between structured (i.e. artifacts) and unstructured noise. The impact of both types of noise on perceived image quality, however, is so far unknown, while this knowledge would be highly beneficial for further improvement of MR imaging systems. In...
conference paper 2012
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Liu, H. (author), Heynderickx, I. (author)
Developing an objective metric, which automatically quantifies perceived image quality degradation induced by blur, is highly beneficial for current digital imaging systems. In many applications, these objective metrics need to be of the noreference (NR) type, which implies that quality prediction is based on the distorted image only. Recent...
journal article 2011
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Liu, H. (author), Heynderickx, I. (author)
Developing an objective metric, which automatically quantifies perceived image quality degradation induced by blur, is highly beneficial for current digital imaging systems. In many applications, these objective metrics need to be of the noreference (NR) type, which implies that quality prediction is based on the distorted image only. Recent...
conference paper 2010
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Alers, H. (author), Liu, H. (author), Redi, J. (author), Heynderickx, I. (author)
Manufacturers of commercial display devices continuously try to improve the perceived image quality of their products. By applying some post processing techniques on the incoming image signal, they aim to enhance the quality level perceived by the viewer. Applying such techniques may cause side effects on different portions of the processed...
conference paper 2010
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Redi, J. (author), Liu, H. (author), Alers, H. (author), Zunino, R. (author), Heynderickx, I. (author)
conference paper 2010
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Liu, H. (author), Heynderickx, I. (author)
A novel no-reference blockiness metric that provides a quantitative measure of blocking annoyance in block-based DCT coding is presented. The metric incorporates properties of the human visual system (HVS) to improve its reliability, while the additional cost introduced by the HVS is minimized to ensure its use for real-time processing. This is...
journal article 2009
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laird, J. (author), Heynderickx, I. (author)
Displays are coming on the market that can produce a larger range of colors over EBU and this has led to much research on the topic of how to use the additional color gamut volume provided by the displays. Some research has focused on different methods to map colors from small to large gamuts, whereas this paper focuses on defining the required...
conference paper 2008
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kaptein, R.G. (author), Kuijsters, A. (author), Lambooij, M.T.M. (author), IJsselsteijn, W.A. (author), Heynderickx, I. (author)
The image quality circle is a commonly accepted framework to model the relation between the technology variables of a display and the resulting image quality. 3D-TV systems, however, go beyond the concept of image quality. Research has shown that, although 3D scenes are clearly more appreciated by subjects, the concept ’image quality’ does not...
conference paper 2008
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Heynderickx, I. (author)
public lecture 2007
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Lambooij, M.T.M. (author), IJsselsteijn, W. (author), Heynderickx, I. (author)
Visual discomfort has been the subject of considerable research in relation to stereoscopic and autostereoscopic displays, but remains an ambiguous concept used to denote a variety of subjective symptoms potentially related to different underlying processes. In this paper we clarify the importance of various causes and aspects of visual comfort....
conference paper 2007
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