Searched for: author%3A%22Hogervorst%2C+M.A.%22
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Kariis, H. (author), Barbosa, A. (author), Barros, A. (author), Ferreira, P. (author), Gullström, C. (author), Hogervorst, M.A. (author), Jonsson, R. (author), Millet-Ribot, C. (author), Rubeziene, V. (author), Santos, G. (author), Schwarz, A. (author), Senzier, C. (author), Varnaite-Žuravliova, S. (author), Winkelmann, M. (author), Åkerlind, C. (author)
With the increased threat from advanced sensor systems using several wavelength bands and sensor fusion, the requirements on camouflage increase. Consequently, in order to reduce the risk of EU soldiers being detected, identified and engaged, adaptive camouflage prototypes have been developed, implemented and demonstrated. Several active and...
conference paper 2022
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van der Burg, E. (author), Hogervorst, M.A. (author), Toet, A. (author)
Natural scenes are typically highly heterogeneous, making it difficult to assess camouflage effectiveness for moving objects since their local contrast varies with their momentary position. Camouflage performance is usually assessed through visual search and detection experiments involving human observers. However, such studies are time...
conference paper 2022
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Sanden, K.P.H.M. (author), Hogervorst, M.A. (author), Bijl, P. (author)
To create a complete virtual scene with sufficient fidelity so it can be used for signature/camouflage assessment turns out to be complicated. Small differences in scene parameters can have a huge impact on the outcome and parameters are often unknown, which makes comparison with real environments/scenes difficult. Instead of fully virtual...
conference paper 2022
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van der Burg, E. (author), Yu, J. (author), Hogervorst, M.A. (author), Bin, L. (author), Culpepper, J. (author), Toet, A. (author)
In order to assess camouflage and the role of movement under widely ranging (lighting, weather, background) conditions simulation techniques are highly useful. However, sufficient level of fidelity of the simulated scenes is required to draw conclusions. Here, live recordings were obtained of moving soldiers and simulations of similar scenes...
conference paper 2021
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van der Burg, E. (author), Hogervorst, M.A. (author), Toet, A. (author)
Targets that are well camouflaged under static conditions are often easily detected as soon as they start moving. We investigated and evaluated ways to design camouflage that dynamically adapts to the background and conceals the target while taking the variation in potential viewing directions into account. In a human observer experiment...
article 2021
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Hogervorst, M.A. (author), de Kok, M.M. (author)
Within the EDA funded project ACAMSII, "Adaptive camouflage for the soldier", a future soldier system is being developed and implemented that provides adaptive camouflage against all relevant sensor threats, ranging from visible to thermal and radar. To provide adaptive camouflage in the visible domain LEDs are integrated in the clothing. A...
conference paper 2021
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van der Burg, E. (author), Hogervorst, M.A. (author), Toet, A. (author)
Targets that are well camouflaged under static conditions are often easily detected as soon as they start moving. We investigated and evaluated ways to design camouflage that dynamically adapts to the background and conceals the target while taking the variation in potential viewing directions into account. In a human observer experiment...
conference paper 2020
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Bijl, P. (author), Hogervorst, M.A. (author)
Image-based Electro-Optical system simulation including an end-to-end performance test is a powerful tool to characterize a camera system before it has been built. In particular, it can be used in the design phase to make an optimal trade-off between performance on the one hand and SWaPC (Size, Weight, Power and Cost) criteria on the other....
conference paper 2019
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Brouwer, A.M. (author), Hogervorst, M.A. (author), van Erp, J.B.F. (author), Grootjen, M. (author), van Dam, E. (author), Zandstra, E.H. (author)
Understanding consumers’ emotional experience during the process of cooking is important to enable the development of food products. In addition to verbal (‘explicit’) reports, physiological variables and facial expression may be helpful measures since they do not interfere with the experience itself and are of a continuous nature. This study...
article 2019
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Toet, A. (author), Hogervorst, M.A. (author)
In military operations signature reduction techniques such as camouflage nets, low-emissive paints, and camouflage patterns are typically deployed to optimize the survivability of high value assets by minimizing their detectability. Various methods have been developed to assess the effectiveness of these camouflage measures. There are three main...
article 2019
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Toet, A. (author), Hogervorst, M.A. (author)
public lecture 2019
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Hogervorst, M.A. (author)
Interview met M Hoogervorst van TNO. Kleding is emotie. Wat de één prachtig vindt, bestempelt de ander als spuuglelijk. Hoe lastig is het dan om gevechtskleding te maken voor ruim 45.000 militairen? Sterker! dook in de wereld van het Defensie Operationeel Kleding Systeem (DOKS) en dit is wat we vonden. Plus een bonuspagina met reacties uit...
article 2019
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Hogervorst, M.A. (author), Bijl, P. (author), Fuller, P. (author), Aartsen, R. (author), Jovanov, L. (author)
Image-based Electro-Optical system simulation including an end-To-end performance test is a powerful tool to characterize a camera system before it has been built. In particular, it can be used in the design phase to make an optimal trade-off between performance on the one hand and SWaPC criteria on the other. During the design process, all...
conference paper 2018
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Brouwer, A.M. (author), van de Water, L. (author), Hogervorst, M.A. (author), Kraaij, W. (author), Schraagen, J.M.C. (author), Hogenelst, K. (author)
Monitoring an individual’s mental state using unobtrusively measured signals is regarded as an essential element in symbiotic human-machine systems. However, it is not straightforward to model the relation between mental state and such signals in real life, without resorting to (unnatural) emotion induction. We recorded heart rate, facial...
conference paper 2018
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Brouwer, A.M. (author), van der Waa, J.S. (author), Hogervorst, M.A. (author), Cacace, A. (author), Stokking, H. (author)
While brain signals potentially provide us with valuable information about a user, it is not straightforward to derive and use this information to smooth man-machine interaction in a real life setting. We here propose to predict head rotation on the basis of brain signals in order to improve images presented in a Head Mounted Display (HMD)....
conference paper 2017
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Bijl, P. (author), Hogervorst, M.A. (author), Toet, A. (author)
The Triangle Orientation Discrimination (TOD) methodology includes i) a widely applicable, accurate end-to-end EO/IR sensor test, ii) an image-based sensor system model and iii) a Target Acquisition (TA) range model. The method has been extensively validated against TA field performance for a wide variety of well- and under-sampled imagers,...
conference paper 2017
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Brouwer, A.M. (author), Hogervorst, M.A. (author), Grootjen, M. (author), van Erp, J.B.F. (author), Zandstra, E.H. (author)
Neurophysiological correlates of affective experience could potentially provide continuous information about a person’s experience when cooking and tasting food, without explicitly verbalizing this. Such measures would be helpful to understand people’s implicit food preferences and choices. This study examined for the first time the relation...
article 2017
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Brouwer, A.M. (author), van der Waa, J.S. (author), Hogervorst, M.A. (author), Cacace, A. (author), Stokking, H. (author)
While brain signals potentially provide us with valuable information about a user, it is not straightforward to derive and use this information to smooth man-machine interaction in a real life setting. We here propose to predict head rotation on the basis of brain signals in order to improve images presented in a Head Mounted Display (HMD)....
conference paper 2017
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Hogervorst, M.A. (author), Toet, A. (author)
Previously, we presented two color mapping methods for the application of daytime colors to fused nighttime (e.g., intensified and longwave infrared or thermal (LWIR)) imagery. These mappings not only impart a natural daylight color appearance to multiband nighttime images but also enhance their contrast and the visibility of otherwise obscured...
article 2017
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Brouwer, A.M. (author), Hogervorst, M.A. (author), Oudejans, B.A. (author), Ries, A.J. (author), Touryan, J. (author)
EEG and eye tracking variables are potential sources of information about the underlying processes of target detection and storage during visual search. Fixation duration, pupil size and event related potentials (ERPs) locked to the onset of fixation or saccade (saccade-related potentials, SRPs) have been reported to differ dependent on whether...
article 2017
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