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van der Steen, J.L.P.J. (author), Peters, L.C.J.M. (author), Smits, E.C.P. (author), Zalar, P. (author), Gelinck, G.H. (author)Thermal imagers conventionally consist of a suspended sensing element on support structure with patterned thermal detection layer to get good thermal isolation between sensor elements[1]. Large area and wearable thermal imaging applications require cost effective fabrication, robustness and a flexible form factor. We present a 16×16 active...conference paper 2019
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Ruggeri, E. (author), van Aken, B.B. (author), Isabella, O. (author), Zeman, M. (author)Imaging techniques, like electroluminescence and dark lock-in thermography, are valuable quality control tools as they yield quantitative and spatially resolved information about the device. In this paper, we isolated some of the conductive foil– cell interconnections of back-contact solar cells to study the appearance of these intentional...article 2018
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Verlaan, A.L. (author), Giesen, P.T.M. (author), van Grol, P. (author), Limpens, M. (author), Heijmans, J.A.C. (author), Visser, H. (author), Vink, H.J.P. (author), Maniscalco, M.P. (author), Verhoeff, P. (author), O'Neill, R. (author), Smith, M. (author), Stratton, B. (author), Gattuso, A. (author), Smiley, M. (author), Lasnier, C.J. (author), Feder, R. (author), Vasquez, J. (author), LeSher, M. (author)The Upper port Wide Angle Viewing System (UWAVS) is diagnostic system that provides visible light and InfraRed images of the divertor area in the ITER tokamak. The main functions of the UWAVS are to provide divertor wall and plasma luminance and temperature distributions at high spatial resolution (3–5 mm) and frame rates (500–1000 Hz) for...article 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
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Bijl, P. (author), Hogervorst, M.A. (author)In this paper we present a new, analytical TOD model. The model provides an estimate of the TOD curve for an Optical, Electro-Optical or Thermal Infrared imaging system based on a limited number of essential system parameters. This is useful to get a quick Target Acquisition range prediction but also serves as a first order input to an image...conference paper 2016
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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 den Ende, D.A. (author), Kusters, R.H.L. (author), Cauwe, M. (author), van der Waal, A. (author), van den Brand, J. (author)Integration of LEDs on flexible foil substrates is of interest for flexible lighting applications and flexible photonic devices. A matrix of LEDs on a foil combined with a diffuser can be a potential alternative for flexible OLED lighting devices. Preferably, these LEDs are integrated in an unpackaged, bare die form as it reduces cost, footprint...conference paper 2012
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Klok, L. (author), Zwart, S. (author), Verhagen, H. (author), Mauri, E. (author)Thermal infrared high resolution satellite images from Landsat sensors were used to spatially quantify the surface heat island (SHI) of Rotterdam in the Netherlands. Based on surface temperature maps retrieved on 15 summer days since 1984, the average surface temperature of each district and neighbourhood within the city was compared to the...article 2012
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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
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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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Weiss, A.R. (author), Adomeit, U. (author), Chevalier, P. (author), Landeau, S. (author), Bijl, P. (author), Champagnat, F. (author), Dijk, J. (author), Göhler, B. (author), Landini, S. (author), Reynolds, J.P. (author), Smith, L.N. (author)Modern IR cameras are increasingly equipped with built-in advanced (often non-linear) image and signal processing algorithms (like fusion, super-resolution, dynamic range compression etc.) which can tremendously influence performance characteristics. Traditional approaches to range performance modeling are of limited use for these types of...conference paper 2012
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Mouthaan, M.M. (author), van den Broek, S.P. (author), Hendriks, E.A. (author), Schwering, P.B.W. (author)We evaluate the performance of different key-point detectors and region descriptors when used for automatic classification of small sea targets in infrared video. In our earlier research performed on this subject as well as in other literature, many different region descriptors have been proposed. However, it is unclear which methods are most...article 2011
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Degache, M.A.C. (author)Modern infrared imaging seekers can nowadays deal with higher resolution and less noisy sensor images. The testing of new image processing or tracking algorithms requires a fitted set of relevant sensor images. When no actual recordings are available, when experimental benches are not adapted or at an early stage of development, one can require...conference paper 2011
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Toet, A. (author), Hogervorst, M.A. (author), Nikolov, S.G. (author), Lewis, J.J. (author), Dixon, T.D. (author), Bull, D.R. (author), Canagarajah, C.N. (author), TNO Defensie en Veiligheid (author)The increasing availability and deployment of imaging sensors operating in multiple spectral bands has led to a large research effort in image fusion, resulting in a plethora of pixel-level image fusion algorithms. However, the cognitive aspects of multisensor image fusion have not received much attention in the development of these methods. In...article 2010
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TNO Defensie en Veiligheid (author), Toet, A. (author), Hogervorst, M.A. (author), Dijk, J. (author), van Son, R. (author)We present the design and first field trial results of the all-day all-weather INVIS Integrated Night Vision surveillance and observation System. The INVIS augments a dynamic three-band false-color nightvision image with synthetic 3D imagery in a real-time display. The night vision sensor suite consists of three cameras, respectively sensitive...conference paper 2010
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TNO Defensie en Veiligheid (author), Schwering, P.B.W. (author), Bekman, H.H.P.T. (author), van Seijen, H.H. (author)Band selection is essential in the design of multispectral sensor systems. This paper describes the TNO hyperspectral band selection tool HYBASE. It calculates the optimum band positions given the number of bands and the width of the spectral bands. HYBASE is used to assess the minimum number of spectral bands that is required to get the best...conference paper 2009
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TNO Defensie en Veiligheid (author), van Iersel, M. (author), Veerman, H.E.T. (author), van der Mark, W. (author)Once a crime has been perpetrated, forensic traces will only be persevered in the crime scene for a limited time frame. It is therefore necessary to record a crime scene meticulously. Usually, photographs and/or videos are taken at the scene to document it, so that later on one will know the exact place of an object. Another possibility is to...conference paper 2009
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TNO Defensie en Veiligheid (author), van den Broek, S.P. (author), Bouma, H. (author), Degache, M.A.C. (author)Operating in a coastal environment, with a multitude of boats of different sizes, detection of small extended targets is only one problem. A further difficulty is in discriminating detections of possible threats from alarms due to sea and coastal clutter, and from boats that are neutral for a specific operational task. Adding target features to...conference paper 2008
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König, R. (author), Hildebrandt, D. (author), Hübner, T. (author), Klinkhamer, J.F.F. (author), Moddemeijer, K. (author), Vliegenthart, W.A. (author), TNO Industrie en Techniek (author)The stellarator W7-X will be capable of running in a quasicontinuous operating mode with 10 MW of electron cyclotron heating (ECRH) heating for 30 min, the duration only being limited by the capacity of the available cooling reservoir. The integrated ten discrete water cooled divertor modules need to be closely monitored by ten high resolution...article 2006
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TNO Defensie en Veiligheid (author), Bijl, P. (author), Schutte, K. (author), Hogervorst, M.A. (author)Current end-to-end sensor performance measures such as the TOD, MRT, DMRT and MTDP were developed to describe Target Acquisition performance for static imaging. Recent developments in sensor technology (e.g. microscan) and image enhancement techniques (e.g. Super Resolution and Scene-Based Non-Uniformity Correction) require that a sensor...conference paper 2006