document

How to Touch Humans: Guidelines for Social Agents and Robots that can Touch

van Erp, J.B.F. (author), Toet, A. (author)

Touch is an essential channel in interpersonal and affective communication, yet most social agents currently lack the capability to touch the user. In this paper we show the credibility of three premises that make the case that providing touch capability to social robots will increase their effectiveness in communicating emotions, building trust...

conference paper 2013

document

Design and evaluation of (urban) camouflage

Hogervorst, M.A. (author), Toet, A. (author), Jacobs, P. (author), TNO Defensie en Veiligheid (author)

An international group consisting of several NATO nations participated in a trial in which urban camouflage was developed and compared. First, photographs were taken in and around a small town (arid climate). Next, the different groups derived urban camouflage patterns from these photographs. We applied our method for deriving a camouflage...

conference paper 2010

document

Conspicuity of moving soldiers

Beintema, J.A. (author), Toet, A. (author), de Vries, S.J. (author)

The construction and validation of soldier combat models requires data on the conspicuity of camouflaged targets in the field, and human targets in particular. So far, this data is lacking. Also, it si currently unknown to what degree luminance contrast and motion contribute to target conspicuity. These data are needed to enable the validation...

conference paper 2011

document

Reach out and touch somebody's virtual hand: Affectively connected through mediated touch

Toet, A. (author), van Erp, J.B.F. (author), Petrignani, F.F. (author), Dufrasnes, M.H. (author), Sahhashivan, A. (author)

We present the design of a haptic computer accessory that adds the experience of touch to online conversations. It enables dyads to exchange the physical experience of holding hands regardless of distance and location. Text, speech and video communication systems support the transmission of several nonverbal affective aspects of communication...

conference paper 2013

document

Towards interactive multisensory data representations

Tak, S. (author), Toet, L. (author)

Despite the availability of a broad range of newly developed multisensory displays and interaction techniques, multisensory interactive data representations are still not widely used. We argue that for complex information analysis multisensory data representations and multimodal interactivity are essential. By leveraging the benefits of the...

conference paper 2013

document

Avoiding obstacles: Strategy changes as a result of visual field limitation

Jansen, S.E.M. (author), Toet, A. (author), Werkhoven, P.J. (author)

conference paper 2011

document

Matched filtering determines human visual search in natural images

Toet, A. (author)

The structural image similarity index (SSIM), introduced by Wang and Bovik (IEEE Signal Processing Letters 9-3, pp. 81-84, 2002) measures the similarity between images in terms of luminance, contrast en structure. It has successfully been deployed to model human visual perception of image distortions and modifications in a wide range of...

conference paper 2011

document

Stress-reducing effects from orange odor exposure in humans in an experimental setting

Smeets, M.A.M. (author), de Groot, J. (author), Kaldewaij, A. (author), Toet, A. (author), van Doornen, L. (author), TNO Defensie en Veiligheid (author)

conference paper 2010

document

Behind every strong man there is a strong background: The effect of dynamic background textures on facial evaluation (poster)

Toet, A. (author), Tak, S. (author), Lucassen, M.P. (author), Gevers, T. (author)

conference paper 2012

document

Exploring the potential of neurophysiological measures for user-adaptive visualization

Tak, S. (author), Brouwer, A.M. (author), Toet, A. (author), van Erp, J.B.F. (author)

User-adaptive visualization aims to adapt visualized information to the needs and characteristics of the individual user. Current approaches deploy user personality factors, user behavior and preferences, and visual scanning behavior to achieve this goal. We argue that neurophysiological data provide valuable additional input for user-adaptive...

conference paper 2013

document

Human communication of emotion via sweat: How specific is it? (abstract)

Smeets, M.A.M. (author), Toet, A. (author), Duinkerken, R. (author), de Groot, J. (author), Kaldewaij, A. (author), van den Hout, M.A. (author)

Females evaluate ambiguous facial expression – morphed between happy and fearful – faces as more fearful when exposed to fear sweat as compared to control odor (Zhou & Chen, 2009). We investigated the specificity of this effect, i.e. whether processing of fearful faces is affected specifically by fear sweat. In Study 1, we investigated the...

conference paper 2011

document

Effects of high power illuminators on vision through windscreens and driving behavior

Toet, A. (author), Alferdinck, J.W.A.M. (author)

In this study we investigated the effectiveness of high power illuminators that are intended to be used as warning devices or non-lethal weapons to deny car drivers their view on the outside world through windscreens. The test is based on a measurement of the amount of veiling glare resulting when a high intensity light source hits a windscreen....

conference paper 2013

document

Who's afraid of virtual darkness: Affective appraisal of night-time virtual environments

Houtkamp, J.M. (author), Toet, A. (author)

bookPart 2012

document

Cognitive Image Fusion and Assessment

Toet, A. (author)

bookPart 2011

document

Real-time full color multiband night vision

Toet, A. (author), Hogervorst, M.A. (author), TNO Defensie en Veiligheid (author)

bookPart 2010

document

Task-relevant sound and user experience in computer-mediated firefighter training

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

document

Computational versus psychophysical bottom-up image saliency: A comparative evaluation study

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

document

Emotional effects of dynamic textures

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

document

Obstacle crossing with lower visual field restriction: Shifts in strategy

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

document

Cybersickness Influences the Affective Appraisal of a Virtual Environment

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