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Alic, L. (author), Niessen, W.J. (author), Veenland, J.F. (author)
Background:Many techniques are proposed for the quantification of tumor heterogeneity as an imaging biomarker for differentiation between tumor types, tumor grading, response monitoring and outcome prediction. However, in clinical practice these methods are barely used. This study evaluates the reported performance of the described methods and...
article 2014
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van Eekeren, A.W.M. (author), Dijk, J. (author), Burghouts, G. (author)
Airborne platforms are recording large amounts of video data. Extracting the events which are needed to see is a timedemanding task for analysts. The reason for this is that the sensors record hours of video data in which only a fraction of the footage contains events of interest. For the analyst, it is hard to retrieve such events from the...
conference paper 2014
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Lefter, I. (author), Burghouts, G.J. (author), Rothkrantz, L.J.M. (author)
Stressful situations are likely to occur at human operated service desks, as well as at human-computer interfaces used in public domain. Automatic surveillance can help notifying when extra assistance is needed. Human communication is inherently multimodal e.g. speech, gestures, facial expressions. It is expected that automatic surveillance...
article 2014
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Burghouts, G.J. (author), Eendebak, P.T. (author), Bouma, H. (author), Hove, R.J.M. (author)
In this paper, we summarize how the action recognition can be improved when multiple views are available. The novelty is that we explore various combination schemes within the robust and simple bag-of-words (BoW) framework, from early fusion of features to late fusion of multiple classifiers. In new experiments on the publicly available IXMAS...
conference paper 2014
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Sanromà, G. (author), Patino, L. (author), Burghouts, G.J. (author), Schutte, K. (author), Ferryman, J. (author)
We present a method for the recognition of complex actions. Our method combines automatic learning of simple actions and manual definition of complex actions in a single grammar. Contrary to the general trend in complex action recognition, that consists in dividing recognition into two stages, our method performs recognition of simple and...
article 2014
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Sella, G. (author), Senzier, C. (author), Andersson, M. (author), Taberski, G. (author), Schutte, K. (author), Lohrmann, P. (author), Murray, E. (author), Nguyen, E. (author)
The EU FP7 project ARENA addresses the design of a flexible surveillance system for detection and recognition of threats towards deployment on mobile critical assets such as trucks, trains, vessels and oil rigs..
conference paper 2014
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Alamyar, M. (author), Bouma, H. (author), Goossens, W.J.H. (author), Wieringa, F.P. (author), Kroon, B.K. (author), Eendebak, P.T. (author), Wijburg, C.J. (author), Smits, G.A.H.J. (author)
Recently, we have shown that connecting live three-dimensional (3D) monitors to all three available Da Vinci® robot (Intuitive) generations improved the impression of shared perception for the whole surgical team. Standardized dry lab experiments revealed that delicate teamwork was faster (up to 40%) when using the 3D monitor [1]. We now studied...
conference paper 2014
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Bouma, H. (author), Baan, J. (author), Dijk, J. (author)
conference paper 2014
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Rob Kemp, R.A.W. (author), Dijk, J. (author), Schutte, K. (author), Visser, N. (author)
A novel filter that enhances underwater video footage in remotely operated vehicle systems is well suited to both military and civilian applications
article 2014
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Torres, J. (author), Schutte, K. (author), Bouma, H. (author), Menendez, J.M. (author)
Many image processing methods, such as techniques for people re-identification, assume photometric constancy between different images. This paper addresses the correction of photometric variations based upon changes in background areas to correct foreground areas. We assume a multiple light source model where all light sources can have different...
article 2014
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Hegyi, A. (author), Netten, B.D. (author), Wang, M. (author), Schakel, W. (author), Schreiter, T. (author), Yuan, Y. (author), van Arem, B. (author), Alkim, T. (author)
The SPECIALIST algorithm can resolve jam waves on freeways using roadside technology: detector loops and speed limit gantries. In this paper we extend the algorithm, enabling the integration with cooperative system technologies and other road side detectors, such as in-car detection and actuation, and video-based monitoring (VBM). Integrating...
conference paper 2013
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Heemskerk, C.J.M. (author), Eendebak, P.T. (author), Schropp, G.Y.R. (author), Hermes, H.V. (author), Elzendoorn, B.S.Q. (author), Magielsen, A.J. (author)
Maintenance operations on ITER tokamak components will be largely performed by remote handling. In previous work it was shown that representative maintenance tasks could be performed significantly faster with direct visual feedback than with camera feedback. In post-test interviews, operators indicated that they regarded the lack of 3D...
article 2013
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Burghouts, G.J. (author), Eendebak, P.T. (author), Bouma, H. (author), ten Hove, R.J.M. (author)
This paper describes the TNO action recognition system that was used to generate the results for our submission to the competition track of the THUMOS ’13 challenge at ICCV ’13. This system deploys only the STIP features that were provided on the website of the challenge. A bag-of-features model is extended with three novelties
conference paper 2013
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Bouma, H. (author), Baan, J. (author), Borsboom, S. (author), van Zon, K. (author), Luo, X. (author), Loke, B. (author), Stoeller, B. (author), van Kuilenburg, H. (author), Dijk, J. (author)
To improve security, the number of surveillance cameras is rapidly increasing. However, the number of human operators remains limited and only a selection of the video streams are observed. Intelligent software services can help to find people quickly, evaluate their behavior and show the most relevant and deviant patterns. We present a software...
conference paper 2013
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Alić, L. (author), Veenland, J.F. (author)
PURPOSE: Tumour heterogeneity could be a valuable biomarker for differentiation, grading, response monitoring and outcome prediction. Many quantification techniques have been described, however in clinical practice these methods are scarcely used. The aim of this study is to evaluate the performance of the described methods and to identify the...
conference paper 2013
document
Burghouts, G.J. (author), Schutte, K. (author)
We investigate how human action recognition can be improved by considering spatio-temporal layout of actions. From literature, we adopt a pipeline consisting of STIP features, a random forest to quantize the features into histograms, and an SVM classifier. Our goal is to detect 48 human actions, ranging from simple actions such as walk to...
article 2013
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Eendebak, P.T. (author), van Eekeren, A.W.M. (author), den Hollander, R.J.M. (author)
We present a robust method for landing zone selection using obstacle detection to be used for UAV emergency landings. The method is simple enough to allow real-time implementation on a UAV system. The method is able to detect objects in the presence of camera movement and motion parallax. Using the detected obstacles we select a safe landing...
conference paper 2013
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Andersson, M. (author), Patino, L. (author), Burghouts, G.J. (author), Flizikowski, A. (author), Evans, M. (author), Gustafsson, D. (author), Petersson, H. (author), Schutte, K. (author), Ferryman, J. (author)
In this paper we present a set of activity recognition and localization algorithms that together assemble a large amount of information about activities on a parking lot. The aim is to detect and recognize events that may pose a threat to truck drivers and trucks. The algorithms perform zone-based activity learning, individual action recognition...
conference paper 2013
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Netten, B.D. (author), Hegyi, A. (author), Wang, M. (author), Schakel, W. (author), Yuan, Y. (author), Schreiter, T. (author), van Arem, B. (author), van Leeuwen, C.J. (author), Alkim, T. (author)
Dynamax is a road side based system using the SPECIALIST control algorithm and inductive loops. Dynamax field tests showed that moving jams can be effectively resolved by dynamic speed measures [1,5]. This paper focuses on Dynamax In Car, which extends the road side infrastructure with a V2I cooperative approach. V2I cooperation is used to...
conference paper 2013
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van Leeuwen, C. (author), Halma, A. (author), Schutte, K. (author)
Detection of anomalies (outliers or abnormal instances) is an important element in a range of applications such as fault, fraud, suspicious behavior detection and knowledge discovery. In this article we propose a new method for anomaly detection and performed tested its ability to detect anomalous behavior in videos from DARPA's Mind's Eye...
conference paper 2013
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