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Zhang, T. (author), Nefs, H.T. (author), Heynderickx, I.E.J.R. (author)Depth of field (DOF) is defined as the distance range within which objects are perceived as sharp. Previous research has focused on blur discrimination in artificial stimuli and natural photographs. The discrimination of DOF, however, has received less attention. Since DOF introduces blur which is related to distance in depth, many levels of...journal article 2014
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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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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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O'Hare, L. (author), Zhang, T. (author), Nefs, H.T. (author), Hibbard, P.B. (author)Visual discomfort has been reported for certain visual stimuli and under particular viewing conditions, such as stereoscopic viewing. In stereoscopic viewing, visual discomfort can be caused by a conflict between accommodation and convergence cues that may specify different distances in depth. Earlier research has shown that depth-of-field,...journal article 2013
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Nefs, H.T. (author), Van Bilsen, A. (author), Pont, S.C. (author), De Ridder, H. (author), Wijntjes, M.W.A. (author), Van Doorn, A.J. (author)In this paper, we focus on how people perceive the aspect ratio of city squares. Earlier research has focused on distance perception but not so much on the perceived aspect ratio of the surrounding space. Furthermore, those studies have focused on “open” spaces rather than urban areas enclosed by walls, houses and filled with people, cars, etc....journal article 2013