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Rooij S.B. van, (author), Bouma, H. (author), van Mil, J.D. (author), ten Hove, R.J.M. (author)The increasing complexity of security challenges requires Law Enforcement Agencies (LEAs) to have improved analysis capabilities, e.g., with the use of Artificial Intelligence (AI). However, it is challenging to make large enough high-quality training and testing datasets available to the community that is developing AI tools to support LEAs in...conference paper 2022
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Burghouts, G.J. (author), Kruithof, M.C. (author), Huizinga, W. (author), Schutte, K. (author)Learning object detection models with a few labels, is possible due to ingenious few-shot techniques, and due to clever selection of images to be labeled. Few-shot techniques work with as few as 1 to 10 randomized labels per object class. We are curious if performance of randomized label selection can be improved by selecting 1 to 10 labels per...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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- den Hollander, R.J.M. (author), Adhikari, A. (author), Tolios, I. (author), van Bekkum, M. (author), Bal, A. (author), Hendriks, S. (author), Kruithof, M.C. (author), Gross, D. (author), Jansen, N. (author), Perez, G. (author), Buurman, K. (author), Raaijmakers, S.A. (author) conference paper 2020
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Boehrer, N. (author), Gabriel, A. (author), Brandt, A. (author), Uijens, W.R. (author), Kampmeijer, L. (author), van der Stap, N. (author), Schutte, K. (author)With the latest advances in image sensor technology, cameras are able to generate video with tens of megapixels per frame. These high resolution videos streams offer great potential to be used in the surveillance domain. For ground based systems, gigapixel streams are already used with great effect as illustrated by the ICME 2019 crowd counting...conference paper 2020
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Pruim, R.H.R. (author), van Opbroek, A. (author), Kruithof, M.C. (author), den Hollander, R.J.M. (author), Baan, J. (author), van den Broek, S.P. (author), van der Stap, N. (author), Dijk, J. (author)Automatic detection and tracking of maritime targets in imagery can greatly increase situation awareness on naval vessels. Various methods for detection and tracking have been proposed so far, both for reasoning as well as for learning approaches. Learning approaches have the promise to outperform reasoning approaches. They typically detect...conference paper 2019
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de Jong, R.J. (author), Heiligers, M.J.C. (author), de Wit, J.J.M. (author), Uysal, F. (author)Camera systems are widely used for surveillance in the security and defense domains. The main advantages of camera systems are their high resolution, their ease of use, and the fact that optical imagery is easy to interpret for human operators. However, particularly when considering application in the defense domain, cameras have some...conference paper 2019
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van den Broek, A.C. (author), van der Velde, J. (author), van den Baar, R.M.E.M. (author), Nijsten, L. (author), van Heijster, R. (author)We present a study of border surveillance systems for automatic threat estimation. The surveillance systems should allow border control operators to be triggered in time so that adequate responses are possible. Examples of threats are smuggling, possibly by using small vessels, cars or drones, and threats caused by unwanted persons (e.g....conference paper 2019
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Bosschaart, C. (author)The Royal Netherlands Navy operates a low-frequency active sonar consisting of a combination of a towed sonar source and receiver array in order to detect and classify objects underwater. The operation involves transmitting high power underwater sound towards an object and detecting the echo reflected by the object. Operating a towed source at...conference paper 2019
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Bryllert, T. (author), Svedin, J. (author), Karlsson, M. (author), Gandini, E. (author), Llombart, N. (author), Drakinskiy, V. (author), Stake, J. (author)We present a 220 GHz imaging radar prototype that has been developed in the European Defense Agency (EDA) project TIPPSI. The purpose of the development was to demonstrate short-range high-resolution 3D imaging for security applications at checkpoints, and to guide the development of stand-off real-time millimeter wave and sub-millimeter wave...conference paper 2018
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Zeng, L. (author), Weber, G. (author), Ravyse, I. (author), Simros, M. (author), van Erp, J. (author), Mioch, T. (author), Conradie, P. (author), Saldien, J. (author)In the paper we present our Range-IT prototype, which is a 3D depth camera based electronic travel aid (ETA) to assist visually impaired people in finding out detailed information of surrounding objects. In addition to detecting indoor obstacles and identifying several objects of interest (e.g., walls, open doors and stairs) up to 7 meters, the...conference paper 2017
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Fischer, N.M. (author), Kruithof, M.C. (author), Bouma, H. (author)In the field of security and defense, it is extremely important to reliably detect moving objects, such as cars, ships, drones and missiles. Detection and analysis of moving objects in cameras near borders could be helpful to reduce illicit trading, drug trafficking, irregular border crossing, trafficking in human beings and smuggling. Many...conference paper 2017
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Vaquero, V. (author), Repiso, E. (author), Sanfeliu, A. (author), Vissers, J. (author), Kwakkernaat, M. (author)The presented paper addresses the problem of detecting and tracking moving objects for autonomous cargo handling in port terminals using a perception system which input data is a single layer laser scanner. A computationally low cost and robust Detection and Tracking Moving Objects (DATMO) algorithm is presented to be used in autonomous guided...conference paper 2016
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Dijk, J. (author), Schutte, K. (author), Nieuwenhuizen, R.P.J. (author)Visual and infrared imagery is degraded by turbulence caused by atmospheric conditions. Because the degradation gets worse for longer distances, turbulence especially hampers long range observation. At sea this turbulence affects classification and identification of ships and other objects. State of the art software based processing algorithms...conference paper 2016
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Dol, H.S. (author), Sabel, J.C. (author), Lensen, H.A. (author), Beckers, A.L.D. (author)Small drifting objects can be a big threat to surface ships, especially when the objects are explosion hazards like sea mines that have become detached from their moorings. Timely detection of such objects is crucial in order to be able to perform adequate evasive manoeuvres. However, the vertical position of drifting mines is a serious...conference paper 2010
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TNO Defensie en Veiligheid (author), ter Haar, F.B. (author), den Hollander, R.J.M. (author), Dijk, J. (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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TNO Defensie en Veiligheid (author), Schutte, K. (author), Schwering, P.B.W. (author)The current state of the art in electro-optics provides systems with high image quality for associated prices and less expensive systems with subsequent lower performance. This keynote will expound how image processing enables to obtain high quality imagery while utilizing affordable system components. Furthermore, where conventional high-end EO...conference paper 2010
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TNO Defensie en Veiligheid (author), Schwering, P.B.W. (author), Schutte, K. (author)Asymmetric threat assessment from military platforms, including early detection and classification by electro-optical means, is a complicated matter. These threats can be for instance explosives-packed rubber boats, minecarrying swimmers and divers in a marine environment or terrorists, improvised explosive devices and small vehicles in land or...conference paper 2010
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Deiana, D. (author), Yarovoy, A. (author), TNO Defensie en Veiligheid (author)In this paper a texture feature coding method to be applied to high-resolution 3D radar images in order to improve target detection is developed. An automatic method for image segmentation based on texture features is proposed. The method has been able to automatically detect weak targets which failed to be detected with intensity based...conference paper 2009
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Withagen, P.J. (author), Groen, F.C.A. (author), Schutte, K. (author), TNO Defensie en Veiligheid (author)Shadow detection is an important aspect of foreground/ background classification. Many techniques exist, most of them assuming that casting a shadow results only in a change in intensity and no change in color. In this paper we show that in most practical indoor and outdoor situations there will also be a color shift. We propose an algorithm for...conference paper 2008
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