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Romijn, J. (author), Sanseven, Seçil (author), Zhang, Kouchi (author), Vollebregt, S. (author), Sarro, Pasqualina M (author)An angle sensitive optical sensor without conventional optics is presented in this article. The reported device omits the need for adding 3-D optics in postprocessing by monolithic integration of complimentary metal-oxide semiconductor compatible diffraction grating layers, which cuts down the fabrication costs and allows for miniaturization...journal article 2022
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Şanseven, Seçil (author)Localization of a light source in the space requires capturing its light intensity and angle information. However, conventional CMOS image sensors can only capture light intensity and wavelength. These sensors need to be augmented with an optical extension such as an aperture or a lens in order to capture the angle information. The use of...master thesis 2021
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Abarca Prouza, A.N. (author)This thesis describes the integration of temperature sensors into a CMOS image sensor (CIS). The temperature sensors provide the in-situ temperature of the pixels as well as the thermal distribution of the pixel array. The temperature and the thermal distribution are intended to be used to compensate for dark current affecting the CIS. Two...doctoral thesis 2021
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Korpas Kamarianos, Alexandros (author)Over the last decades, side-channel attacks (SCAs) have been proven as a substantial weakness of cryptographic devices, while the recent growth of deep learning (DL) dramatically improved the performance of SCA. More and more researches present ways to build lightweight deep neural network (DNN) models that can retrieve the secret encryption key...master thesis 2021
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Matušovič, Marko (author)This research builds upon a previous method of vectorisation of pixel art by pixel neighbour connecting and boundary energy minimisation. The downside of the previous method is the lack of user input throughout the process and possible divergence between the results and the artist’s vision. The proposed method uses the first part of previous...bachelor thesis 2021
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Zangabad, Reza Pakdaman (author), Bosch, Johan G. (author), Mastik, Frits (author), Beurskens, Robert H.S.H. (author), Henneken, Vincent A. (author), Weekamp, Johannes W. (author), van der Steen, A.F.W. (author), van Soest, Gijs (author)Intravascular ultrasound (IVUS) is a well-established diagnostic method that provides images of the vessel wall and atherosclerotic plaques. We investigate the potential for phased-array IVUS utilizing coded excitation (CE) for improving the penetration depth and image signal-to-noise ratio (SNR). It is realized on a new experimental...journal article 2021
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Hagenaars, Erik (author), Pandharipande, Ashish (author), Murthy, Abhishek (author), Leus, G.J.T. (author)People-counting data can be used in building-control systems to improve comfort and in space management applications to optimize building space. In this work, we consider a combi-sensor with a single-pixel thermopile and passive infrared sensor for people counting. We first develop a thermopile signal model for object temperature measurements...journal article 2021
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Dekker, Quinten (author)Dense 3D modeling based on monocular visual data is a powerful process of gaining spatial 3D understanding from 2D observations. The use of visual data to reconstruct such 3D models is still a challenging topic. To obtain the accurate dimensions, additional metadata is required such as a GPS which is not always available. Besides this, dealing...master thesis 2020
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Yang, M. (author)Multi-epoch Synthetic Aperture Radar Interferometry (InSAR) is widely used to estimate displacements of selected scatterers from phase observations. However, their interpretation needs a connection to objects in the real world. <br/><br/>To associate InSAR scatterers to their corresponding geo-objects, it is necessary to (i) accurately estimate...doctoral thesis 2020
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Baladari, Nikhita (author)The functioning of the brain depends on the interplay between a large number of neurons. To understand the information processing in neuronal networks, we need tools to record the electrical activity of cells at high resolution. Microelectrode arrays (MEAs) are predominantly used to measure neuronal activity<br/>at high spatial and temporal...master thesis 2020
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Abarca Prouza, A.N. (author), Theuwissen, A.J.P.A.M. (author)This article presents in-pixel (of a CMOS image sensor (CIS) temperature sensors with improved accuracy in the spatial and the temporal domain. The goal of the temperature sensors is to be used to compensate for dark (current) fixed pattern noise (FPN) during the exposure of the CIS. The temperature sensors are based on substrate parasitic...journal article 2020
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Hagenaars, Erik (author)People counting data in offices is used in many applications like HVAC system control and space management to increase comfort, decrease energy consumption and optimise space utilisation. In contrast to past approaches using imaging modalities that tend to be either expensive or intrusive, we consider single-pixel thermopile sensors for people...master thesis 2020
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Yang, M. (author), Dheenathayalan, P. (author), Lopez Dekker, F.J. (author), van Leijen, F.J. (author), Liao, Mingsheng (author), Hanssen, R.F. (author)Persistent Scatterer Interferometry (PSI) is a time series remote sensing technique to estimate displacements of geo-objects from the interferometric phases of selected Persistent Scatterers (PS). The relative position of a scatterer within a resolution cell causes an additional phase contribution in the observed phase, which needs to be...journal article 2020
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Swens, Jeroen (author)Single-photon detection is extremely important for a number of different applications such as quantum cryptography, CMOS testing and even biomedical research. Most of the applications of single-photon detector require high efficiency combined with high time resolution, high count rates and low dark counts. Superconducting nanowire single-photon...bachelor thesis 2018
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Christodoulou, Antria (author)In this thesis, an image-based method is proposed for solving the relative translation errors of 3D point clouds collected by Mobile Laser Scanning (MLS) techniques. The process of matching 3D point clouds is known as registration. Due to environment-depending limitations of the positioning component of MLS systems, when recording a certain...master thesis 2018
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Fani, Kees (author), Hoogland, Pavel (author), Borba da Silva Falcão Ferreira, Manuel (author)During the project the team aimed to make a decentralized web based game on the blockchain, that is fun to play and is indistinguishable from traditional centralized games. To accomplish this it was chosen to create the game on the EOS blockchain platform. The EOS blockchain platform features great improvements upon older more popular platforms...bachelor thesis 2018
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Christodoulou, A. (author), van Oosterom, P.J.M. (author)In this paper, a method is proposed for solving relative translations of 3D point clouds collected by Mobile Laser Scanning (MLS) techniques. The proposed approach uses the attributes of the 3D points to generate and match 2D-projections, by employing a simple correlation technique instead of matching in 3D. As a result, the developed method...journal article 2018
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Ge, X. (author), Theuwissen, A.J.P.A.M. (author)This paper presents a temporal noise analysis of charge-domain sampling readout circuits for Complementary Metal-Oxide Semiconductor (CMOS) image sensors. In order to address the trade-off between the low input-referred noise and high dynamic range, a Gm-cell-based pixel together with a charge-domain correlated-double sampling (CDS) technique...journal article 2018
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Bueno, J. (author), Murugesan, V. (author), Karatsu, K. (author), Thoen, David (author), Baselmans, J.J.A. (author)We present the development of a background-limited kilo-pixel imaging array of ultrawide bandwidth kinetic inductance detectors (KIDs) suitable for space-based THz astronomy applications. The array consists of 989 KIDs, in which the radiation is coupled to each KID via a leaky lens antenna, covering the frequency range between 1.4 and 2.8 THz...journal article 2018
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- Cartamil Bueno, S.J. (author) doctoral thesis 2017