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Werkhoven, P. (author), Bouwman, J. (author), van Diggelen, J. (author), Dijk, J. (author), van der Meulen, M. (author), Neerincx, M. (author), Raaijmakers, S. (author), van Veenstra, A.F. (author)TNO has lived up to its motto ‘Innovation for life’ by playing a significant part in this digital revolution, with major breakthroughs in computer simulation, network transactions, wireless communication, cyber security, optical satellite communication and quantum computing.report 2022
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den Hollander, R.J.M. (author), van Rooij, S.B. (author), van den Broek, S.P. (author), Dijk, J. (author)An important surveillance task during naval military operations is early risk assessment of vessels. The potential risk that a vessel poses will depend on the vessel type, and vessel classification is therefore a basic technique in risk assessment. Although automatic identification by AIS is widely available, the AIS transponders can potentially...conference paper 2021
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Huizing, A. (author), Veenman, C.J. (author), Neerincx, M. (author), Dijk, J. (author)In recent years, AI based on deep learning has achieved tremendous success in specialized tasks such as speech recognition, machine translation, and the detection of tumors in medical images. Despite these successes there are also some clear signs of the limitations of the current state-of-the-art in AI. For example, biases in AI-enabled face...conference paper 2021
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Boehrer, N. (author), Nieuwenhuizen, R.P.J. (author), Dijk, J. (author)Long-range horizontal path imaging through atmospheric turbulence is hampered by spatiotemporally randomly varying shifting and blurring of scene points in recorded imagery. Although existing software-based mitigation strategies can produce sharp and stable imagery of static scenes, it remains highly challenging to mitigate turbulence in scenes...article 2021
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- Dijk, J. (author), van den Broek, S.P. (author), den Hollander, R.J.M. (author), Baan, J. (author), ten Hove, J.M. (author), Oorbeek, D. (author) conference paper 2021
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- Huizinga, W. (author), van Lier, M. (author), Kruithof, M. (author), Dijk, J. (author) conference paper 2021
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- Boehrer, N. (author), Nieuwenhuizen, R.P.J. (author), Dijk, J. (author) conference paper 2020
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van den Hoogen, B. (author), Uijens, W. (author), den Hollander, R. (author), Huizinga, W. (author), Dijk, J. (author), Schutte, K. (author)Automatic detection and tracking of persons and vehicles can greatly increase situational awareness in many military applications. Various methods for detection and tracking have been proposed so far, both for rule-based and learning approaches. With the advent of deep learning, learning approaches generally outperform rule-based approaches. Pre...conference paper 2020
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Pit, I.R. (author), Wassen, M.J. (author), Kooijman, A.M. (author), Dekker, S.C. (author), Griffioen, J. (author), Arens, S.M. (author), van Dijk, J. (author)In the Netherlands it is common to nourish the coastline with sand from the seabed. Foredunes are replenished with sand from the beach and can be transported further into the dune area.We investigated whether nourishment material alters the phosphorus (P) content of dune soil and the nitrogen (N):P ratio of dune vegetation in two areas: a mega...article 2020
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Nieuwenhuizen, R.P.J. (author), Dijk, J. (author), Schutte, K. (author)Long-range imaging with visible or infrared observation systems is typically hampered by atmospheric turbulence. Software-based turbulence mitigation methods aim to stabilize and sharpen such recorded image sequences based on the image data only. Although successful restoration has been achieved on static scenes in the past, a significant...article 2019
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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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Dijk, J. (author), Schutte, K. (author), Oggero, S. (author)Application of different Artificial Intelligence technologies is increasing over the past couple of years. At a high conceptual level, we can divide these technologies in two different categories: symbolic and sub-symbolic. The term “Hybrid AI” denotes the combination of symbolic and sub-symbolic AI. By combining both semantic reasoning and data...conference paper 2019
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Boelhouwer, A. (author), van Dijk, J. (author), Martens, M.H. (author)Cars that include combinations of automated functions, such as Adaptive Cruise Control (ACC) and Lane Keeping (LK), are becoming more and more available to consumers, and higher levels of automation are under development. In the use of these systems, the role of the driver is changing. This new interaction between the driver and the vehicle may...conference paper 2019
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Huizinga, W. (author), van Opbroek, A.G. (author), Raimon, H.R. (author), Pruim, R.H.R. (author), den Hollander, R.J.M. (author), van den Broek, S.P. (author), van den Schook, E.S. (author), Schutte, K. (author), van den Stap, N. (author), Dijk, J. (author)Imaging systems can be used to obtain situational awareness in maritime situations. Important tools for these systems are automatic detection and tracking of objects in the acquired imagery, in which numerous methods are being developed. When designing a detection or tracking algorithm, its quality should be ensured by a comparison with existing...article 2019
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den Hollander, R.J.M. (author), van der Stap, N. (author), Wilmer, M.M.G. (author), Dijk, J. (author)For military operations, the availability of high-quality imaging information from Electro-Optical / Infrared (EO/IR) sensors is of vital importance. This information can be used for timely detection and identification of threatening vessels in an environment with a large amount of neutral vessels. EO/IR sensors provide imagery of all vessels at...conference paper 2019
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Boehrer, N. (author), Nieuwenhuizen, R.P.J. (author), Dijk, J. (author)Long range horizontal path imaging through atmospheric turbulence is hampered by spatiotemporally randomly varying shifting and blurring of scene points in recorded imagery. Typical mitigation strategies employ software algorithms that combine optical flow to estimate and reduce tip/tilt aberrations with lucky patch identification and data...conference paper 2019
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Meyer-Vitali, A.P. (author), Bakker, R.M. (author), van Bekkum, M.A. (author), de Boer, M. (author), Burghouts, G. (author), van Diggelen, J. (author), Dijk, J. (author), Grappiolo, C. (author), de Greeff, J. (author), Huizing, A.G. (author), Raaijmakers, S. (author)Hybrid Artificial Intelligence combines the best of two worlds: the power of recent advances in deep learning with the possibility to explicitly model human knowledge in connected systems. Together, this new generation of AI becomes more controllable, explainable and fair, in line with European norms and values.report 2019
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van der Stap, N. (author), van Opbroek, A.G. (author), Huizinga, W. (author), Wilmer, M.M.G. (author), van den Broek, S.P. (author), Pruim, R.H.R. (author), den Hollander, R.J.M. (author), Schutte, K. (author), Dijk, J. (author)Detecting maritime targets with electro-optical sensors is an active area of research. One current trend is to automate target detection through image processing or computer vision. Automation of target detection will decrease the number of people required for lower-level tasks, which frees capacity for higher-level tasks. A second trend is that...conference paper 2018
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Du Bosq, T. (author), Agarwal, S. (author), Dijk, J. (author), Gungor, A. (author), Guven, H.E. (author), Haran, T. (author), Laurenzis, M. (author), Leonard, K. (author), Mahalanobis, A. (author), Paunescu, G. (author), Piper, J. (author), Repasi, E. (author), Sheng, Y. (author)Conventional electro-optical and infrared (EO/IR) systems (i.e., active, passive, multiband and hyperspectral) capture an image by optically focusing the incident light at each of the millions of pixels in a focal plane array. The optics and the focal plane are designed to efficiently capture desired aspects (like spectral content, spatial...conference paper 2018
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Dijk, J. (author), Bijl, P. (author), Oppeneer, M. (author), ten Hove, R.J.M. (author), van Iersel, M. (author)The Electro-Optical Signal Transmission and Ranging (EOSTAR) model is an image-based Tactical Decision Aid (TDA) for thermal imaging systems (MWIR/LWIR) developed for a sea environment with an extensive atmosphere model. The Triangle Orientation Discrimination (TOD) Target Acquisition model calculates the sensor and signal processing effects on...conference paper 2017