Searched for: subject:"perception"
(1 - 20 of 51)

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Norman, J.F. (author), Kappers, A.M.L. (author), Beers, A.M. (author), Scott, A.K. (author), Norman, H.F. (author), Koenderink, J.J. (author)
Two experiments evaluated the ability of older and younger adults to perceive the three-dimensional (3D) shape of object surfaces from active touch (haptics). The ages of the older adults ranged from 64 to 84 years, while those of the younger adults ranged from 18 to 27 years. In Experiment 1, the participants haptically judged the shape of...
journal article 2010
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Wijntjes, M.W.A. (author), Kappers, A.M.L. (author)
It is known that our senses are influenced by contrast effects and aftereffects. For haptic perception, the curvature aftereffect has been studied in depth but little is known about curvature contrast. In this study we let observers explore two shapes simultaneously. The shape felt by the index finger could either be flat or convexly curved. The...
journal article 2009
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Onencan, A.M. (author), Enserink, B. (author), van de Walle, B.A. (author)
Nzoia river basin county governments barely cooperate in water resources management to jointly increase the basin's food and energy productivity levels, due to limited trust. In this paper, we propose a game-based approach that can be replicated in any river basin, to assess trust and collaboration processes. In particular, we used the pre...
journal article 2018
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Wagemans, J. (author), Van Doorn, A.J. (author), Koenderink, J.J. (author)
We propose a novel method to probe the depth structure of the pictorial space evoked by paintings. The method involves an exocentric pointing paradigm that allows one to find the slope of the geodesic connection between any pair of points in pictorial space. Since the locations of the points in the picture plane are known, this immediately...
journal article 2011
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Hansmann-Roth, S. (author), Pont, S.C. (author), Mamassian, Pascal (author)
The material property of glossiness, which is attributed to many objects in our daily life, is physically independent of the objects' color. However, perceived glossiness can change with the contrast between the highlight and the area around the specular highlight. Hitherto, experiments mainly investigated gloss on unicolored surfaces. It is...
journal article 2017
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Schifferstein, H.N.J. (author), Desmet, P.M.A. (author)
To determine the roles the sensory modalities play in user-product interactions, one modality was blocked during the execution of eight simple tasks. Participants reported how they experienced the products and how they felt during the experiment. Blocking vision resulted in the largest loss of functional information, increased task difficulty...
journal article 2007
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Volcic, R. (author), Wijntjes, M.W.A. (author), Kool, E.C. (author), Kappers, A.M.L. (author)
The simple experience of a coherent percept while looking and touching an object conceals an intriguing issue: different senses encode and compare information in different modality-specific reference frames. We addressed this problem in a cross-modal visuo-haptic mental rotation task. Two objects in various orientations were presented at the...
journal article 2010
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Wijntjes, W.A. (author), Doerschner, K. (author), Kucukoglu, G. (author), Pont, S.C. (author)
Among other cues, the visual system uses shading to infer the 3D shape of objects. The shading pattern depends on the illumination and reflectance properties (BRDF). In this study, we compared 3D shape perception between identical shapes with different BRDFs. The stimuli were photographed 3D printed random smooth shapes that were either painted...
journal article 2011
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Wijntjes, M.W.A. (author)
The plastic effect is historically used to denote various forms of stereopsis. The vivid impression of depth often associated with binocular stereopsis can also be achieved in other ways, for example, using a synopter. Accounts of this go back over a hundred years. These ways of viewing all aim to diminish sensorial evidence that the picture...
journal article 2017
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Wijntjes, M.W.A. (author)
The perception of pictorial surfaces has been studied quantitatively for more than 20 years. During this time, the “gauge figure method” has been shown to be a fast and intuitive method to quantify pictorial relief. In this method, observers have to adjust the attitude of a gauge figure such that it appears to lie flat on a surface in pictorial...
journal article 2011
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Birman, F. (author)
I defend a pragmatist reinterpretation of Sellars’s famous manifestscientific distinction. I claim that in order to do justice to this important distinction we must first recognize, despite what philosophers—including, arguably, Sellars—often make of it, that the distinction does not draw an epistemological or metaphysical boundary between...
journal article 2010
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Kartashova, T. (author), de Ridder, H. (author), te Pas, S.F. (author), Pont, S.C. (author)
In this article, we studied perception of a particular case of light fields that is characterized by a difference in its consistent structure between parts of a scene. In architectural lighting design, such a consistent structure in a part of a light field is called a light zone. First, we explored whether human observers are sensitive to...
journal article 2018
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Pluijms, Joost P. (author), Cañal-Bruland, Rouwen (author), Bergmann Tiest, Wouter M. (author), Mulder, F.A. (author), Savelsbergh, Geert J.P. (author)
We examined whether expertise effects are present in cutaneous wind perception. To this end, we presented wind stimuli consisting of different wind directions and speeds in a wind simulator. The wind simulator generated wind stimuli from 16 directions and with three speeds by means of eight automotive wind fans. Participants were asked to...
journal article 2015
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Van Doorn, A. (author), Koenderink, J. (author), Wagemans, J. (author)
We address the topic of “pictorial depth” in cases of pictures that are unlike photographic renderings. The most basic measure of “depth” is no doubt that of depth order. We establish depth order through the pairwise depth-comparison method, involving all pairs from a set of 49 fiducial points. The pictorial space for this study was evoked by a...
journal article 2011
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Stelling, A. (author), van Wee, G.P. (author), Commandeur, JJF (author), Hagenzieker, M.P. (author)
Listening to music or talking on the phone while cycling as well as the growing number of quiet (electric) cars on the road can make the use of auditory cues challenging for cyclists. The present study examined to what extent and in which traffic situations traffic sounds are important for safe cycling. Furthermore, the study investigated the...
journal article 2017
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de Wagter, C. (author), Ruijsink, H.M. (author), Smeur, E.J.J. (author), van Hecke, K.G. (author), van Tienen, F. (author), van der Horst, E. (author), Remes, B.D.W. (author)
To participate in the Outback Medical Express UAV Challenge 2016, a vehicle was designed and tested that can autonomously hover precisely, takeoff and land vertically, fly fast forward efficiently, and use computer vision to locate a person and a suitable landing location. The vehicle is a novel hybrid tail‐sitter combining a delta‐shaped...
journal article 2018
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Molin, E.J.E. (author), Blangé, J. (author), Cats, O. (author), Chorus, C.G. (author)
The risk of being involved in an airplane accident is largely ignored in air passengers’ choice models. The reason presumably is that it is hard to operationalize, because objective safety indicators often involve extremely low probabilities that are hard to grasp and interpret by passengers. In this paper, we propose an operationalization...
journal article 2017
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Jansen, S.J.T. (author), Hoekstra, J.S.C.M. (author), Boumeester, H.J.F.M. (author)
The extraction of natural gas in the north of The Netherlands has led to soil subsidence and the occurrence of earthquakes. Residents worry about the safety of their families and the saleability of their dwelling and might want to move. The goal is to examine whether the earthquakes are related to the intention to move. A survey among...
journal article 2017
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Beckers, R. (author), van der Voordt, Theo (author), Dewulf, G (author)
This paper aims to address higher education students' learning space preferences. The study is based on a survey that involved 697 business management students of a Dutch University of Applied Sciences. The research focuses on preferred learning spaces for individual study activities, which require concentration, and preferred learning spaces...
journal article 2016
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Wijntjes, M.W.A. (author)
The perception of pictorial surfaces has been studied quantitatively for more than 20 years. During this time, the “gauge figure method” has been shown to be a fast and intuitive method to quantify pictorial relief. In this method, observers have to adjust the attitude of a gauge figure such that it appears to lie flat on a surface in pictorial...
journal article 2011
Searched for: subject:"perception"
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