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Pont, S.C. (author), Van Doorn, A.J. (author), Te Pas, S.F. (author), Wijntjes, M.W.A. (author), Koenderink, J.J. (author)We present a novel setup in which real objects made of two different materials can be mixed optically in a linearly weighted manner. We conducted a psychophysical experiment in which observers rated optical mixtures of the three combinations of glossy, matte, and velvety green birds. The observers rated the materials on four scales: matte-glossy...conference paper 2012
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Van Doorn, A.J. (author), Koenderink, J.J. (author), Leyssen, M.H.R. (author), Wagemans, J. (author)We study the effect of stylistic differences on the nature of pictorial spaces as they appear to an observer when looking into a picture. Four pictures chosen from diverse styles of depiction were studied by 2 different methods. Each method addresses pictorial depth but draws on a different bouquet of depth cues. We find that the depth...journal article 2012
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Koenderink, J.J. (author), Van Doorn, A.J. (author)“Pictorial space” is the mental structure that appears to be the scaffold for the visual awareness when looking “into” (as opposed to “at”) a picture. Its structure differs from the “visual space” that is the scaffold for the visual awareness when looking into the scene in front of the observer. The structure of pictorial space has been probed...journal article 2012
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Vreeswijk, J.D. (author), Landman, R.L. (author), Van Berkum, E.C. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author), Van Arem, B. (author)When applying dynamic route guidance to improve the network performance, it is important to balance the interests of the road authorities and the road users. In this paper we will illustrate how bounded rationality and indifference bands can be taken into account in dynamic route guidance to improve the network performance while respecting the...conference paper 2012
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Pont, S.C. (author), Koenderink, J.J. (author), Van Doorn, A.J. (author), Wijntjes, M.W.A. (author), Te Pas, S.F. (author)We present a novel setup in which real objects made of different materials can be mixed optically. For the materials we chose mutually very different materials, which we assume to represent canonical modes. The appearance of 3D objects consisting of any material can be described as linear superposition of 3D objects of different canonical...conference paper 2012
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De Ridder, H. (author), Pont, S.C. (author)In the past decades perceptual (or perceived) image quality has been one of the most important criteria for evaluating digitally processed image and video content. With the growing popularity of new media like stereoscopic displays there is a tendency to replace image quality with viewing experience as the ultimate criterion. Adopting such a...conference paper 2012
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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
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Valente Pais, A.R. (author)A perception coherence zone (PCZ) designates the range of inertial motion levels that, although not being a one-to-one match with the visual motion levels, are still considered by the subjects as being part of a coherent movement. Two types of PCZs were studied: amplitude PCZs and phase PCZs. Amplitude and phase coherences zones were measured...doctoral thesis 2013
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Sleenhoff, S. (author), Osseweijer, P. (author)With a mandatory labeling scheme for GM food in Europe since 2004 measuring actual consumer choice in practice has become possible. Anticipating Europeans negative attitude toward GM food, the labeling was enforced to allow consumers to make an informed choice. We studied consumers actual purchase behavior of GM food products and compared this...journal article 2013
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Wastiels, L. (author), Schifferstein, H.N.J. (author), Wouters, I. (author), Heylighen, A. (author)Designers’ visual way of knowing and working tends to be highly valued in design research. In architecture such an approach is increasingly criticized. Since people experience buildings with all their senses, architects’ visual focus is said to the run the risk of disregarding non-visual aspects. This study focuses on the visual and tactile...journal article 2013
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Ciftcioglu, O. (author), Bittermann, M.S. (author)A method for fusion of perceptions is presented. It is based on probabilistic treatment of perception, where perception quantifies the chance an unbiased observer sees an environmental object, and the associated probability can be interpreted as degree of awareness for the object. The approach uniquely accounts for the fact that final...conference paper 2013
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Bittermann, M.S. (author), Ciftcioglu, O. (author)A method for quantifying ambient surveillance is presented, which is based on probabilistic-possibilistic perception. The human surveillance of a scene through observing camera sensed images on a monitor is modeled in three steps. First immersion of the observer is simulated by modeling perception of the scene from the camera locations using...conference paper 2013
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Ciftcioglu, O. (author), Bittermann, M.S. (author)A method for fusion of perceptions is presented. It is based on probabilistic treatment of perception, where perception quantifies the chance an unbiased observer sees an environmental object, and the associated probability can be interpreted as degree of awareness for the object. The approach uniquely accounts for the fact that final...conference paper 2013
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Bittermann, M.S. (author), Ciftcioglu, O. (author)A method for quantifying ambient surveillance is presented, which is based on probabilistic-possibilistic perception. The human surveillance of a scene through observing camera sensed images on a monitor is modeled in three steps. First immersion of the observer is simulated by modeling perception of the scene from the camera locations using...conference paper 2013
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Breen, J.L.H. (author)If we wish to reach a deeper, more objective understanding of the phenomena of Architectural and Environmental Design, we need to develop and apply working methods that allow us to imaginatively analyse and consequently envision the formal issues which are at (inter)play: demonstrating their workings and effects in the ‘Real World’. First of all...conference paper 2013
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Prado Vega, R. (author), Van Leeuwen, P.M. (author), Rendon Velez, E. (author), Lemij, H.G. (author), De Winter, J.C. (author)The objective of this study was to evaluate differences in driving performance, visual detection performance, and eye-scanning behavior between glaucoma patients and control participants without glaucoma. Glaucoma patients (n = 23) and control participants (n = 12) completed four 5-min driving sessions in a simulator. The participants were...journal article 2013
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- Correia Grácio, B.J. (author) doctoral thesis 2013
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Gattol, V. (author)The work in this thesis investigates relatedness (as perceived by consumers) in mental representations of products. Just as other objects that are part of the physical world, products are represented in consumers’ minds in the form of concepts. Concepts hold consumers’ knowledge about a product. They consist of sets of features (concrete and...doctoral thesis 2013
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Wijntjes, M.W.A. (author), De Ridder, H. (author)Whereas the 17th century painter Canaletto was a master in linear perspective of the architectural elements, he seems to have had considerable difficulty with linear perspective of shadows. A common trick to avoid shadow perspective problems is to set the (solar) illumination direction parallel to the projection screen. We investigated in one...conference paper 2014
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Saffarian, M (author), de Winter, J.C.F. (author), Senders, J.W. (author)It is commonly accepted that vision plays an important role in car braking, but it is unknown how people brake in the absence of visual information. In this simulator study, we measured drivers’ braking behaviour while they had to stop their car at designated positions on the road. The access to visual information was manipulated by occluding...journal article 2015