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Cremer, F. (author), de Jong, W. (author), Schutte, K. (author), Johnson, J.T. (author), Baertlein, B.A. (author)
A specular model has been used to predict the passive polarimetric infrared (IR) signature of surface-laid landmines. The signature depends on the temperature of the landmine and the sky radiance. The temperature of the landmine is measured using a thermocouple. The signature itself is measured using a polarimetric IR camera setup. The...
conference paper 2002
document
Schwering, P.B.W. (author), van den Broek, S.P. (author), Kemp, R.A.W. (author), Lensen, H.A. (author), TNO Defensie en Veiligheid (author)
Present-day naval operations take place in coastal environments as well as narrow straits all over the world. Coastal environments around the world are exhibiting a number of threats to naval forces. In particular, a large number of asymmetric threats can be present in environments with cluttered backgrounds as well as rapidly varying...
conference paper 2010
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ter Haar, F.B. (author), den Hollander, R.J.M. (author), Dijk, J. (author), TNO Defensie en Veiligheid (author)
Moving object detection in urban scenes is important for the guidance of autonomous vehicles, robot navigation, and monitoring. In this paper moving objects are automatically detected using three sequential frames and tracked over a longer period. To this extend we modify the plane+parallax, fundamental matrix, and trifocal tensor algorithms to...
conference paper 2010
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Netten, B.D. (author), Wedemeijer, H. (author), TNO Industrie en Techniek (author)
The complexity of cooperative systems makes the use of high fidelity simulation essential in the development and testing of cooperative applications and their interactions with other cooperative systems. In SAFESPOT a simulator test bench is setup to test the safety margin applications running on multiple vehicles and road side units. This paper...
conference paper 2010
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Schakel, W.J. (author), van Arem, B. (author), Netten, B.D. (author), TNO Industrie en Techniek (author)
The effects of Cooperative Adaptive Cruise Control (CACC) on traffic flow is an important issue as traffic flow stability, capacity and safety are concerned. In contrast to most research we focus on traffic flow stability. We use the Intelligent Driver Model and CACC algorithms to assess the effects. A recently field-tested and CACC-based...
conference paper 2010
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Dubbelman, G. (author), Esteban, I. (author), Schutte, K. (author)
In robotic applications the absolute pose is often obtained as the integral of successive relative rigid-body motions. As each relative rigid-body motion is typically the product of statistical inference, the integrated absolute pose will exhibit error build-up and the estimated trajectory will differ from the true trajectory undertaken by the...
conference paper 2010
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TNO Defensie en Veiligheid (author), Alić, L. (author), Haeck, J.C. (author), Klein, S. (author), Bol, K. (author), van Tiel, S.T. (author), Wielopolski, P.A. (author), Bijster, M. (author), Niessen, W.J. (author), Bernsen, M. (author), Veenland, J.F. (author), de Jong, M. (author)
Spatial correspondence between histology and multi sequence MRI can provide information about the capabilities of non-invasive imaging to characterize cancerous tissue. However, shrinkage and deformation occurring during the excision of the tumor and the histological processing complicate the co registration of MR images with histological...
conference paper 2010
document
Rothkrantz, L. (author), Lefter, I. (author)
The paper describes a surveillance system of cameras installed at lamppost of a military area. The surveillance system has been designed to detect unwanted visitors or suspicious behaviors. The area is composed of streets, building blocks and surrounded by gates and water. The video recordings are monitored by operators at regular times. Next...
conference paper 2011
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de Jong, A.N. (author)
Measurements taken through the year in False Bay, South Africa, are helping to validate models of sensor performance for a range of practical applications
article 2011
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Hofmann, K.M. (author)
The recovery of 3D human pose is an important problem in computer vision with many potential applications in human computer interfaces, motion analysis (e.g. sports, medical) and surveillance. 3D human pose also provides informative, viewinvariant features for a subsequent activity recognition step. Most if not all previous work on 3D human pose...
doctoral thesis 2011
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Alić, L. (author), van Vliet, M. (author), van Dijke, C.F. (author), Eggermont, A.M.M. (author), Veenland, J.F. (author), Niessen, W.J. (author)
This study aims to quantify the heterogeneity of tumour enhancement in dynamic contrast-enhanced MRI (DCE-MRI) using texture analysis methods. The suitability of the coherence and the fractal dimension to monitor tumour response was evaluated in 18 patients with limb sarcomas imaged by DCE-MRI pre- and post-treatment. According to the...
article 2011
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Lefter, I. (author), Rothkrantz, L.J.M. (author), Burghouts, G. (author), Yang, Z. (author), Wiggers, P. (author)
Automatic detection of aggressive situations has a high societal and scientific relevance. It has been argued that using data from multimodal sensors as for example video and sound as opposed to unimodal is bound to increase the accuracy of detections. We approach the problem of multimodal aggression detection from the viewpoint of a human...
conference paper 2011
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Burghouts, G.J. (author), Marck, J.W. (author)
We propose a mechanism to assess threats that are based on observables. Observables are properties of persons, i.e., their behavior and interaction with other persons and objects. We consider observables that can be extracted from sensor signals and intelligence. In this paper, we discuss situation assessment that is based on observables for...
article 2011
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Burghouts, G.J. (author), Schutte, K. (author)
Amsterdam, The Netherlands, 27th of May 2010. The national security authorities call out to secure the area around the central train station. 150 Security officers, both military and police, are instructed to guard the area and to pick out those people with hostile intent. Although the officers were very effective in assessing people’s...
conference paper 2011
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Esteban, I. (author), Dijk, J. (author), Groen, F. (author)
FIT3D is a Toolbox built for Matlab that aims at unifying and distributing a set of tools that will allow the researcher to obtain a complete 3D model from a set of calibrated images. In this paper we motivate and present the structure of the toolbox in a tutorial and example based approach. Given its flexibility and scope we believe that FIT3D...
conference paper 2011
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Hofmann, K.M. (author), Gavrila, D.M. (author)
We present a novel approach for 3D human body shape model adaptation to a sequence of multi-view images, given an initial shape model and initial pose sequence. In a first step, the most informative frames are determined by optimization of an objective function that maximizes a shape–texture likelihood function and a pose diversity criterion (i...
article 2011
document
Hofmann, K.M. (author), Gavrila, D.M. (author)
We present a novel approach for 3D human body shape model adaptation to a sequence of multi-view images, given an initial shape model and initial pose sequence. In a first step, the most informative frames are determined by optimization of an objective function that maximizes a shape–texture likelihood function and a pose diversity criterion (i...
article 2011
document
Dubbelman, G. (author)
Gijs Dubbelman richt zich in zijn onderzoek op intelligente autonome mobiele voertuigen. Deze kunnen potentieel toegepast worden om taken die te gevaarlijk, te tijdrovend of te ingewikkeld zijn voor mensen toch efficiënt, veilig en kosteneffectief te verrichten. Voor hun gebruik is het bepalen van de geometrische structuur van hun omgeving en...
doctoral thesis 2011
document
Alić, L. (author), Haeck, J.C. (author), Bol, K. (author), Klein, S. (author), van Tiel, S.T. (author), Wielopolski, P.A. (author), Bijster, M. (author), Bernsen, M. (author), de Jong, M. (author), Niessen, W.J. (author), Veenland, J.F. (author)
Background:Magnetic resonance imaging (MRI), together with histology, is widely used to diagnose and to monitor treatment in oncology. Spatial correspondence between these modalities provides information about the ability of MRI to characterize cancerous tissue. However, registration is complicated by deformations during pathological processing,...
article 2011
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Bol, K. (author), Haeck, J.C. (author), Alić, L. (author), Bernsen, M. (author), de Jong, M. (author), Niessen, W.J. (author), Veenland, J.F. (author)
Dynamic Contrast-Enhanced Magnetic Resonance Imaging (DCE-MRI) is becoming an indispensable tool to non-invasively study tumor characteristics. However, many different DCE-analysis methods are currently being used. To compare and validate different methods, histology is the gold standard. For this purpose, exact co-localization between histology...
conference paper 2011
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