Searched for: subject:"perception"
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Hoffmann, S. (author)
Risk awareness and personal preparedness are seen to be important parameters in an integrated risk management scheme today. This study is contributing to the knowledge base about the perception of risk. Regarding the risk of storm-surges, an assessment of the perception and the status of personal preparedness of the people are addressed in an...
report 2008
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Heyndrickx, I. (author), Kaptein, R. (author)
A lot of current 3D displays suffer from the fact that their spatial resolution is lower compared to their 2D counterparts. One reason for this is that the multiple views needed to generate 3D are often spatially multiplexed. Besides this, imperfect separation of the left- and right-eye view leads to blurring or ghosting, and therefore to a...
conference paper 2009
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Ten Holt, G.A. (author), Arendsen, J. (author), De Ridder, H. (author), Van Doorn, A.J. (author), Reinders, M.J.T. (author), Hendriks, E.A. (author)
Current automatic sign language recognition (ASLR) seldom uses perceptual knowledge about the recognition of sign language. Using such knowledge can improve ASLR because it can give an indication which elements or phases of a sign are important for its meaning. Also, the current generation of data-driven ASLR methods has shortcomings which may...
conference paper 2009
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Steinführer, A. (author)
The paper draws lessons from our empirical investigations in Germany, Italy and England/Wales in a very specific perspective: It formulates recommendations for flood risk management with people at risk. Thus it tries to shed light on the views of this important – but often neglected – group of stakeholders. Our addressees are flood risk...
report 2009
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Teunissen, C. (author)
Over the last decade, consumer television sets have substantially increased in screen size, with screen diagonals up to 65-inch and beyond. At the same time, their thickness has decreased to only a few centimeters. Right from the start, this combination has been highly appreciated by consumers, resulting in a fast acceptance of flat-screen...
doctoral thesis 2009
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Wijntjes, M.W.A. (author), Volcic, R. (author), Pont, S.C. (author), Koenderink, J.J. (author), Kappers, M.L. (author)
We studied the influence of haptics on visual perception of three-dimensional shape. Observers were shown pictures of an oblate spheroid in two different orientations. A gauge-figure task was used to measure their perception of the global shape. In the first two sessions only vision was used. The results showed that observers made large errors...
journal article 2009
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Richards, W. (author), Koenderink, J.J. (author), Van Doorn, A. (author)
Unlike the Metelli monochrome transparencies, when overlays and their backgrounds have chromatic content, the inferred surface colors may not always be physically realizable, and are in some sense “imaginary.” In these cases, the inferred chromatic transmittance or reflectance of the overlay lies outside the RGB spectral boundaries. Using the...
journal article 2009
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Marchand, M. (author)
The aim of this report is to document the output of the three workshops and the questionnaire. The results of the Flood risk analysis has been reported in another Floodsite report: De Bruijn et al., 2008. For a complete description of the Schelde pilot study reference is made to Chapter 8 of the FLOODsite book on pilot sites (Schanze, in prep.).
report 2009
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Slinger, J.H. (author)
At the 2008 System Dynamics Conference in Athens a survey of the understanding and expectations of conference participants regarding model analysis was conducted. Respondents included both those active in research on formal model analysis methods and those only vaguely familiar with the term. Results from the survey are presented and discussed...
conference paper 2009
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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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Bittermann, M.S. (author)
Design is complex. This is because it involves conflicting goals that are often vague. Also, prior to the design it is generally not clear how important goals are relative to each other. And finally the amount of possible solutions is large in general. These bottlenecks are addressed in this thesis. A novel approach for design is proposed, where...
doctoral thesis 2009
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Arendsen, J. (author)
This dissertation presents the results of a series of studies on the appearance of manual movements in gestures. The main goal of this research is to increase our understanding of how humans perceive signs and other gestures. Generated insights from human perception may aid the development of technology for recognizing gestures and sign language...
doctoral thesis 2009
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Yang, Z. (author)
In many public places multiple sensing devices, such as cameras, are installed to help prevent unwanted situations such as aggression and violence. At the moment, the best solution to reach a safe environment requires human operators to monitor the camera images and take appropriate actions when necessary. In the wake of the terrorist attacks of...
doctoral thesis 2009
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Blijlevens, J. (author), Creusen, M.E.H. (author), Schoormans, J.P.L. (author)
The appearance attributes of designed products noted in the literature often reflect what designers themselves perceive in a product design. This present research, however, provides knowledge on how consumers perceive product appearance by identifying appearance attributes that consumers use to distinguish the appearances of durable products....
journal article 2009
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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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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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Ten Holt, G.A. (author)
Automatic sign language recognition is a relatively new field of research (since ca. 1990). Its objectives are to automatically analyze sign language utterances. There are several issues within the research area that merit investigation: how to capture the utterances (cameras, magnetic sensors, instrumented gloves), how to extract interesting...
doctoral thesis 2010
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Wijntjes, W.A. (author), Pont, S.C. (author)
It has recently been shown that an increase of the relief height of a glossy surface positively correlates with the perceived level of gloss (Y.-H. Ho, M. S. Landy, & L. T. Maloney, 2008). In the study presented here we investigated whether this relation could be explained by the finding that glossiness perception correlates with the skewness of...
journal article 2010
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Cruz, P.J.S. (author), Veer, F.A. (author), Carvalho, P.L.L. (author)
The application of glass in contemporary architecture explores perceptual phenomenon that intentionally change the way we experience space. SANAA'S recent work uses glass in a radical way, proposing a renewed approach to transparency. The Toledo Glass Pavilion, with most spaces defined by glass walls, presents an intense visual experience. The...
conference paper 2010
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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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