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Deumel, S. (author), van Breemen, A.J.J.M. (author), Peeters, B. (author), Maas, J. (author), Akkerman, H.B. (author), Meulenkamp, E.A. (author), Gelinck, G.H. (author), Huerdler, J.E. (author), Schmidt, O. (author), Heiss, W. (author), Tedde, S.F. (author)Future medical X-ray imaging will benefit from advances in computing power and artificial intelligence as well as improvements in the X-ray detector performance itself. Hybrid inorganic-organic perovskite materials promise direct conversion detectors with higher image quality, owing to their strong X-ray absorption, high electron and hole...conference paper 2022
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Fattori, M. (author), Cardarelli, S. (author), Fijn, J. (author), Harpe, P. (author), Charbonneau, M. (author), Locatelli, D. (author), Lombard, S. (author), Laugier, C. (author), Tournon, L. (author), Jacob, S. (author), Romanjek, K. (author), Coppard, R. (author), Gold, H. (author), Adler, M. (author), Zirkl, M. (author), Groten, J. (author), Tschepp, A. (author), Lamprecht, B. (author), Postl, M. (author), Stadlober, B. (author), Socratous, J. (author), Cantatore, E. (author)In this work is presented for the first time a large-area proximity sensing surface fabricated by printing organic materials and featuring distributed Analog Frontend Electronics (AFE) based on Organic Thin-Film Transistors (OTFTs). The sensor foil enables detecting the presence of approaching heat sources (like humans or moving machines) at a...article 2022
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Verschueren, L. (author), Ameys, M. (author), Lopez, M.V. (author), Smout, S. (author), Ke, T.H. (author), Vandenplas, E. (author), Kronemeijer, A.J. (author), Heremans, P. (author), Genoe, J. (author), Dehaene, W. (author), Myny, K. (author)This paper presents a new compensation principle using a 2T1C pixel circuit. The implementation shows significant improvement in uniformity for all grey-levels, due to compensation for both VT and β-factor variations. The resulting current variation after compensation in the characterized display area reaches values down to 0.079%.conference paper 2020
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Berzins, J. (author), Fasold, S. (author), Pertsch, T. (author), Bäumer, S.M.B. (author), Setzpfandt, F. (author)Digital color imaging relies on spectral filters on top of a pixelated sensor, such as a CMOS image sensor. An important parameter of imaging devices is their resolution, which depends on the size of the pixels. For many applications, a high resolution is desirable, consequently requiring small spectral filters. Dielectric nanostructures, due to...article 2019
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Simone, G. (author), di carlo Rasi, D. (author), de Vries, X. (author), Heintges, G.H.L. (author), Meskers, S.C.J. (author), Janssen, R.A.J. (author), Gelinck, G.H. (author)Photovoltaic retinal prostheses show great potential to restore sight in patients suffering from degenerative eye diseases by electrical stimulation of the surviving neurons in the retinal network. Herein, organic photodiodes (OPDs) sensitive to near-infrared (NIR) light are evaluated as photovoltaic pixels for future application in retinal...article 2018
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Satsangi, Y. (author), Whiteson, S. (author), Oliehoek, F.A. (author), Bouma, H. (author)Automated tracking is key to many computer vision applications. However, many tracking systems struggle to perform in real-time due to the high computational cost of detecting people, especially in ultra high resolution images. We propose a new algorithm called PartiMax that greatly reduces this cost by applying the person detector only to the...conference paper 2017
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Genoe, J. (author), Obata, K. (author), Ameys, M. (author), Myny, K. (author), Ke, T.H. (author), Nag, M. (author), Steudel, S. (author), Schols, S. (author), Maas, J. (author), Tripathi, A. (author), Van Der Steen, J.-L. (author), Ellis, T. (author), Gelinck, G.H. (author), Heremans, P. (author)The efficiency of small-molecule OLED devices increased substantially in recent years, creating opportunities for power-efficient displays, as only light is generated proportional to the subpixel intensity. However, current active matrix OLED (AMOLED) displays on foil do not validate this power-efficient advantage, as too much power is lost in...conference paper 2014
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Santini, F. (author), Palombo, A. (author), Dekker, R.J. (author), Pignatti, S. (author), Pascucci, S. (author), Schwering, P.B.W. (author)Anomalous pixel responses often seriously affect remote sensing applications, especially in the thermal spectral range. In this paper, a new method to identify and correct anomalous pixel responses is presented. The method was specifically developed to handle with hyperspectral data and is based on the statistical analysis of a gray scale RX...article 2014
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Benoist, K.W. (author), Schleijpen, R.M.A. (author)A simple model has been developed and implemented in Matlab code, predicting the over-exposed pixel area of cameras caused by laser dazzling. Inputs of this model are the laser irradiance on the front optics of the camera, the Point Spread Function (PSF) of the used optics, the integration time of the camera, and camera sensor specifications...conference paper 2014
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Kumar, A. (author), Moet, D. (author), van der Steen, J.L. (author), Tripathi, A.K. (author), Rodriguez, F.G. (author), Maas, J. (author), Simon, M. (author), Reutten, W. (author), Douglas, A. (author), Raaijmakers, R. (author), Malinowski, P.E. (author), Myny, K. (author), Shafique, U. (author), Andriessen, R. (author), Heremans, P. (author), Gelinck, G.H. (author)We demonstrate organic imaging sensor arrays fabricated on flexible plastic foil with the solution processing route for both photodiodes and thin film transistors. We used the photovoltaic P3HT:PCBM blend for fabricating the photodiodes using spin coating and pentacene as semiconductor material for the TFTs. Photodiodes fabricated with P3HT:PCBM...conference paper 2014
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de Boer, B.M. (author), Durkut, M. (author)A prototype miniaturized digital sun sensor (miniDSS) was developed by TNO. It is expected to be launched on QuadSat for in-orbit demonstration. The single-chip sun sensor comprises an application specific integrated circuit (ASIC) on which an active pixel sensor (APS), read-out and processing circuitry as well as communication circuitry are...conference paper 2013
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Mei, L. (author), Xue, Y. (author), de Leeuw, G. (author), Holzer-Popp, T. (author), Guang, J. (author), Li, Y. (author), Yang, L. (author), Xu, H. (author), Xu, X. (author), Li, C. (author), Wang, Y. (author), Wu, C. (author), Hou, T. (author), He, X. (author), Liu, J. (author), Dong, J. (author), Chen, Z. (author)A novel approach for the joint retrieval of aerosol optical depth (AOD) and aerosol type, using Meteosat Second Generation-Spinning Enhanced Visible and Infrared Imagers (MSG/SEVIRI) observations in two solar channels, is presented. The retrieval is based on a Time Series (TS) technique, which makes use of the two visible bands at 0.6 μm and 0.8...article 2012
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de Boer, B.M. (author), Durkut, M. (author), Laan, E. (author), Hakkesteegt, H. (author), Theuwissen, A. (author), Xie, N. (author), Leijtens, J.L. (author), Urquijo, E. (author), Bruins, P. (author)A high-precision and low-power miniaturized digital sun sensor has been developed at TNO. The single-chip sun sensor comprises an application specific integrated circuit (ASIC) on which an active pixel sensor (APS), read-out and processing circuitry as well as communication circuitry are combined. The design was optimized for low recurrent cost....conference paper 2012
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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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Snik, F. (author), Rietjens, J.H.H. (author), van Harten, G. (author), Stam, D.M. (author), Keller, C.U. (author), Smit, J.M. (author), Laan, E.C. (author), Verlaan, A.L. (author), ter Horst, R. (author), Navarro, R. (author), Wielinga, K. (author), Moon, S.G. (author), Voors, R. (author)SPEX (Spectropolarimeter for Planetary EXploration) is an innovative, compact instrument for spectropolarimetry, and in particular for detecting and characterizing aerosols in planetary atmospheres. With its ∼1-liter volume it is capable of full linear spectropolarimetry, without moving parts. The degree and angle of linear polarization of the...conference paper 2010
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TNO Industrie en Techniek TNO Defensie en Veiligheid (author), Bovenkamp, E.G.P. (author), Schutte, K. (author)For many decades attempts to accomplish Automatic Target Recognition have been made using both visual and FLIR camera systems. A recurring problem in these approaches is the segmentation problem, which is the separation between the target and its background. This paper describes an approach to Automatic Target Recognition using a laser gated...conference paper 2010
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TNO Industrie en Techniek (author), Barbu, I. (author), Ivan, M.G. (author), Giesen, P.T.M. (author), van de Moosdijk, M. (author), Meinders, E.R. (author)Organic flexible electronics is an emerging technology with huge potential growth in the future which is likely to open up a complete new series of potential applications such as flexible OLED-based displays, urban commercial signage, and flexible electronic paper. The transistor is the fundamental building block of all these applications. A key...conference paper 2009
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Lawniczak, W. (author), Hanea, R.G. (author), Heemink, A.W. (author), McLaughlin, D. (author), Jansen, J.D. (author), TNO Bouw en Ondergrond (author)Since the first version of Kalman Filter was introduced in 1960 it received a lot of attention in mathematical and engineering world. There are many successful successors like for example Ensemble Kalman Filter (Evensen 1996) which has been applied also for reservoir engineering problems. The method proposed in [Zhou et al. 2007] draws together...conference paper 2008
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Xie, N. (author), Theuwissen, A.J.P. (author), Wang, X. (author), Leijtens, J.A.P. (author), Hakkesteegt, H. (author), Jansen, H. (author)This paper describes the implementation and firstmeasurement results of a new way that obtains row and column profile data from a CMOS Image Sensor, which is developed for a micro-Digital Sun Sensor (μDSS).The basic profiling action is achieved by the pixels with p-type MOS transistors which realize a so-called "Winner Takes It All (WTIA) [1][2]...conference paper 2008
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TNO Defensie en Veiligheid (author), Withagen, P.J. (author), Schutte, K. (author), Groen, F.C.A. (author)Changing image intensities causes problems for many computer vision applications operating in unconstrained environments. We propose generally applicable algorithms to correct for global differences in intensity between images recorded with a static or slowly moving camera, regardless of the cause of intensity variation. The proposed intensity...report 2007
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