Searched for: author%3A%22van+Eekeren%2C+A.W.M.%22
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van Eekeren, A.W.M. (author), van Huis, J.R. (author), Eendebak, P.T. (author), Baan, J. (author)
Airborne platforms, such as UAV's, with Wide Area Motion Imagery (WAMI) sensors can cover multiple square kilometers and produce large amounts of video data. Analyzing all data for information need purposes becomes increasingly labor-intensive for an image analyst. Furthermore, the capacity of the datalink in operational areas may be inadequate...
conference paper 2015
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Dijk, J. (author), Elands, P.J.M. (author), Burghouts, G. (author), Van Eekeren, A.W.M. (author)
In this paper we evaluate the added value of image interpretation techniques for EO sensors mounted on a UAV for operators in an operational setting. We start with evaluating the support by technology for strategic and tactical purposes in a real-time scenario. We discuss different variations regarding users, platforms and sensors, communication...
conference paper 2015
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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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van Eekeren, A.W.M. (author), Huebner, C.S. (author), Dijk, J. (author), Schutte, K. (author), Schwering, P.B.W. (author)
Atmospheric turbulence is a well-known phenomenon that diminishes the recognition range in visual and infrared image sequences. There exist many different methods to compensate for the effects of turbulence. This paper focuses on the performance of two software-based methods to mitigate the effects of low-And medium turbulence conditions. Both...
conference paper 2014
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van Eekeren, A.W.M. (author), Dijk, J. (author), Schutte, K. (author)
In general, long range detection, recognition and identification in visual and infrared imagery are hampered by turbulence caused by atmospheric conditions. The amount of turbulence is often indicated by the refractive-index structure parameter Cn 2. The value of this parameter and its variation is determined by the turbulence effects over the...
conference paper 2014
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Burghouts, G.J. (author), van Eekeren, A.W.M. (author), Dijk, J. (author)
This paper presents a system to extract metadata about human activities from full-motion video recorded from a UAV. The pipeline consists of these components: tracking, motion features, representation of the tracks in terms of their motion features, and classification of each track as one of the human activities of interest. We consider these...
conference paper 2014
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Dijk, J. (author), van Eekeren, A.W.M. (author), Toet, A. (author), den Hollander, R.J.M. (author), Schutte, K. (author), van Heijningen, A.W.P. (author), Bijl, P. (author)
For many military operations, situational awareness is of great importance. During night conditions, this situational awareness can be improved using both analog and digital image-intensified cameras. The quality of image intensifiers is a topic of interest. One of the differences between a digital and analog system is noise behavior. For...
article 2013
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Dijk, J. (author), van Eekeren, A.W.M. (author), Rajadell Rojas, O. (author), Burghouts, G.J. (author), Schutte, K. (author)
Surveillance and reconnaissance tasks are currently often performed using an airborne platform such as a UAV. The airborne platform can carry different sensors. EO/IR cameras can be used to view a certain area from above. To support the task from the sensor analyst, different image processing techniques can be applied on the data, both in real...
conference paper 2013
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Bouma, H. (author), Azzopardi, G. (author), Spitters, M.M. (author), de Wit, J.J. (author), Versloot, C.A. (author), van der Zon, R.W.L. (author), Eendebak, P.T. (author), Baan, J. (author), ten Hove, R.J.M. (author), van Eekeren, A.W.M. (author), ter Haar, F.B. (author), den Hollander, R.J.M. (author), van Huis, R.J. (author), de Boer, M.H.T. (author), van Antwerpen, G. (author), Broekhuijsen, B.J. (author), Daniele, L.M. (author), Brandt, P. (author), Schavemaker, J.G.M. (author), Kraaij, W. (author), Schutte, K. (author)
We describe the TNO system and the evaluation results for TRECVID 2013 Multimedia Event Detection (MED) and instance search (INS) tasks. The MED system consists of a bag-of-word (BOW) approach with spatial tiling that uses low-level static and dynamic visual features, an audio feature and high-level concepts. Automatic speech recognition (ASR)...
conference paper 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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van Eekeren, A.W.M. (author), Schutte, K. (author), Dijk, J. (author), Schwering, P.B.W. (author)
A well-known phenomena that diminishes the recognition range in infrared imagery is atmospheric turbulence. In literature many methods are described that try to compensate for the distortions caused by atmospheric turbulence. Most of these methods use a global processing approach in which they assume a global shift and a uniform blurring in all...
conference paper 2013
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van Eekeren, A.W.M. (author), Schutte, K. (author), Dijk, J. (author), Schwering, P.B.W. (author)
To compensate for visual artifacts due to atmospheric turbulence is of key importance for the task of visual identification over long distances. In this paper we propose a new method to compensate the visual effects of turbulence, which makes identification possible over larger distances. Our method is based on applying phase diversity imaging...
conference paper 2012
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Bouma, H. (author), Dijk, J. (author), van Eekeren, A.W.M. (author)
Blur estimation is an important technique for super resolution, image restoration, turbulence mitigation, deblurring and autofocus. Low-cost methods have been proposed for blur estimation. However, they can have large stochastic errors when computed close to the edge location and biased estimates at other locations. In this paper, we define an...
conference paper 2012
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van Eekeren, A.W.M. (author), Schutte, K. (author), Dijk, J. (author), Schwering, P.B.W. (author), van Iersel, M. (author), Doelman, N.J. (author)
In general, long range visual detection, recognition and identification are hampered by turbulence caused by atmospheric conditions. Much research has been devoted to the field of turbulence compensation. One of the main advantages of turbulence compensation is that it enables visual identification over larger distances. In many (military)...
conference paper 2012
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Schutte, K. (author), van Eekeren, A.W.M. (author), Dijk, J. (author), Schwering, P.B.W. (author), van Iersel, M. (author), Doelman, N.J. (author)
In general, long range visual detection, recognition and identification are hampered by turbulence caused by atmospheric conditions. Much research has been devoted to the field of turbulence compensation. One of the main advantages of turbulence compensation is that it enables visual identification over larger distances. In many (military)...
conference paper 2012
document
Dijk, J. (author), Schutte, K. (author), van Eekeren, A.W.M. (author), Bijl, P. (author)
For many military operations situational awareness is of great importance. This situational awareness and related tasks such as Target Acquisition can be acquired using cameras, of which the resolution is an important characteristic. Super resolution reconstruction algorithms can be used to improve the effective sensor resolution. In order to...
conference paper 2012
document
Kruithof, M.C. (author), van Eekeren, A.W.M. (author), Dijk, J. (author), Schutte, K. (author)
High resolution sensors are required for recognition purposes. Low resolution sensors, however, are still widely used. Software can be used to increase the resolution of such sensors. One way of increasing the resolution of the images produced is using multi-frame super resolution algorithms. Limitation of these methods are that the...
conference paper 2012
document
van Eekeren, A.W.M. (author), Kruithof, M.C. (author), Schutte, K. (author), Dijk, D. (author), van Iersel, M. (author), Schwering, P.B.W. (author)
Infrared imagery over long ranges is hampered by atmospheric turbulence effects, leading to spatial resolutions worse than expected by a diffraction limited sensor system. This diminishes the recognition range and it is therefore important to compensate visual degradation due to atmospheric turbulence. The amount of turbulence is spatially...
conference paper 2012
document
van Eekeren, A.W.M. (author), Schutte, K. (author), Schwering, P.B.W. (author)
A novel software method enhances camera images blurred by the atmosphere
article 2012
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van Eekeren, A.W.M. (author), Schutte, K. (author), Dijk, J. (author), Schwering, P.B.W. (author)
Long range object identification needs visual identification over large distances. However, atmospheric turbulence does hinder long range imaging. Therefore it is crucial to compensate the visual artifacts due to atmospheric turbulence. In this paper we propose a new method to compensate these turbulence effects, thus enabling identification at...
conference paper 2011
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