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Toet, A. (author), Houtkamp, J.M. (author), van der Meulen, R. (author)
We investigated whether manipulation of visual and auditory depth and speed cues can affect a user’s sense of risk for a low-cost nonimmersive virtual environment (VE) representing a highway environment with traffic incidents. The VE is currently used in an examination program to assess procedural knowledge of highway patrol officers. In its...
article 2013
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Hogervorst, M.A. (author), Toet, A. (author), Bijl, P. (author)
We investigate how human visual search performance with field of view (FOV) restrictions depends on scan speed, zoom factor, target location, and conspicuity. First, observers search a FOV that moves at a constant speed along a predefined path over a visual search scene (the field of regard, or FOR), and we measure the effects of scan speed,...
article 2013
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Toet, A. (author), Hogervorst, M.A. (author)
We present a new method to derive a multiscale urban camouflage pattern from a given set of background image samples. We applied this method to design a camouflage pattern for a given (semi-arid) urban environment. We performed a human visual search experiment and a computational evaluation study to assess the effectiveness of this multiscale...
article 2013
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Toet, A. (author), Tak, S. (author)
Previous research has shown that perceived facial valence is biased toward background valence. Here, we examine whether background dominance also affects perceived facial dominance. In particular, we hypothesized that downward-pointing triangles, which are known to convey threat, would affect perceived facial dominance. Participants judged...
article 2013
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Houtkamp, J.M. (author), Toet, A. (author), Bos, F.A. (author)
The authors added task-relevant sounds to a computer-mediated instructor in-the-loop virtual training for firefighter commanders in an attempt to raise the engagement and arousal of the users. Computer-mediated training for crew commanders should provide a sensory experience that is sufficiently intense to make the training viable and effective....
article 2012
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Toet, A. (author), Hogervorst, M.A. (author)
We present an overview of our recent progress and the current state-of-the-art techniques of color image fusion for night vision applications. Inspired by previously developed color opponent fusing schemes, we initially developed a simple pixel-based false color-mapping scheme that yielded fused false color images with large color contrast and...
article 2012
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Garcia, J.A. (author), Rodriguez-Sánchez, R. (author), Fdez-Valdivia, J. (author), Toet, A. (author)
The objective of image fusion is to represent relevant information from multiple individual images in a single image. Some fusion methods may represent important visual information more distinctively than others, thereby conveying it more efficiently to the human observer. Here, we propose to rank order images fused by different methods...
article 2012
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Toet, A. (author)
A real-time mapping technique enables full-color rendering of multi-spectral nighttime images, making them as clear and colorful as daylight ones
article 2012
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Toet, A. (author)
The predictions of 13 computational bottom-up saliency models and a newly introduced Multiscale Contrast Conspicuity (MCC) metric are compared with human visual conspicuity measurements. The agreement between human visual conspicuity estimates and model saliency predictions is quantified through their rank order correlation. The maximum of the...
article 2011
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Toet, A. (author), Henselmans, M. (author), Lucassen, M.P. (author), Gevers, T. (author)
This study explores the effects of various spatiotemporal dynamic texture characteristics on human emotions. The emotional experience of auditory (eg, music) and haptic repetitive patterns has been studied extensively. In contrast, the emotional experience of visual dynamic textures is still largely unknown, despite their natural ubiquity and...
article 2011
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Jansen, S.E.M. (author), Toet, A. (author), Werkhoven, P.J. (author)
In this study, the authors investigated how restriction of the vertical viewing angle influences obstacle-crossing behavior. Twelve participants stepped over obstacles of different dimensions while wearing visual-field-restricting goggles. Using full-body motion capture, several kinematic measures were extracted and analyzed. Results indicate...
article 2011
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Toet, A. (author), van der Spek, E.D. (author), Houtkamp, J.M. (author)
We investigated if cybersickness has an effect on the affective appraisal of a virtual environment (VE). For many applications it is essential that users experience the simulated environment in a similar way as the corresponding real one. Navigation through VEs is known to negatively influence the physical well-being of observers by inducing...
article 2010
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Toet, A. (author), TNO Defensie en Veiligheid (author)
New methods to automatically generate virtual character movements. GATE - Overview of activities 2007-2010 - Looking at the future of games
article 2010
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