Searched for: image sensor
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Wang, F. (author)
This thesis provides a thorough analysis of the linearity characteristics of a CMOS image sensor. Firstly, this thesis analyzes the factors that cause the nonlinearity of the image sensors. These factors are then verified by simulation results of a proposed behavioral model and the measurements in a prototype chip. Secondly, different techniques...
doctoral thesis 2018
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Calli, B. (author), Caarls, W. (author), Wisse, M. (author), Jonker, P.P. (author)
Grasp synthesis for unknown objects is a challenging problem as the algorithms are expected to cope with missing object shape information. This missing information is a function of the vision sensor viewpoint. The majority of the grasp synthesis algorithms in literature synthesize a grasp by using one single image of the target object and...
journal article 2018
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Antolović, I.M. (author)
The aim of this research is to explore the potential advantages of SPAD imagers used in microscopy. An ideal microscopy detector requires high sensitivity (high quantum efficiency QE or photon detection probability PDP), photon counting operation, low noise (dark current or dark count rate), timing resolution in the order of 100 ps, frame rate...
doctoral thesis 2018
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Kislaya, A. (author), Sciacchitano, A. (author)
The use of optical diffusers for the reduction of peak-locking errors in particle image velocimetry is investigated. The working principle of the optical diffusers is based on the concept of birefringence, where the incoming rays are subject to different deflections depending on the light direction and polarization. The performances of the...
journal article 2018
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Hagenaars, Gerben (author), de Vries, S. (author), Luijendijk, A.P. (author), de Boer, W.P. (author), Reniers, A.J.H.M. (author)
Measured trends and variability in shoreline position are used by coastal managers, scientists and engineers to understand and monitor coastal systems. This paper presents a new and generic method for automated shoreline detection from the largely unexplored collection of publicly available satellite imagery. The position of the obtained...
journal article 2018
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Ge, X. (author), Theuwissen, A.J.P. (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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Qiao, Tiezhu (author), Chen, Lulu (author), Pang, Y. (author), Yan, Gaowei (author)
Infrared and visible light image fusion technology is a hot spot in the research of multi-sensor fusion technology in recent years. Existing infrared and visible light fusion technologies need to register before fusion because of using two cameras. However, the application effect of the registration technology has yet to be improved. Hence, a...
journal article 2018
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Janjic, Jovana (author), Kruizinga, P. (author), van der Meulen, P.Q. (author), Springeling, Geert (author), Mastik, Frits (author), Leus, G.J.T. (author), Bosch, Johan G. (author), van der Steen, A.F.W. (author), van Soest, G. (author)
We present a form of acoustic microscopy, called Structured Ultrasound Microscopy (SUM). It creates a volumetric image by recording reflected echoes of ultrasound waves with a structured phase front using a moving single-element transducer and computational reconstruction. A priori knowledge of the acoustic field produced by the single...
journal article 2018
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Antolović, I.M. (author), Bruschini, Claudio (author), Charbon, E.E.E. (author)
. In this paper, we present a thorough analysis,...
journal article 2018
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Ewald, V.A. (author), Groves, R.M. (author), Benedictus, R. (author)
In this paper, we investigated transducer placement strategies for detecting cracks in primary aircraft structures using ultrasonic Structural Health Monitoring (SHM). The approach developed is for an expected damage location based on fracture mechanics, for example fatigue crack growth in a high stress location. To assess the performance of the...
journal article 2018
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Pilavaki, Evdokia (author), Valente, V. (author), Demosthenous, Andreas (author)
Point-of-care systems for the detection of infectious diseases are in great demand especially in developing countries. Lateral flow immunoassays are considered ideal biosensors for point-of-care diagnostics due to their numerous advantages. However, to quantify their results a low power, robust electronic reader is needed. A low power CMOS...
journal article 2018
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Kruizinga, P. (author), van der Meulen, P.F. (author), Fedjajevs, A. (author), Mastik, F (author), Springeling, Geert (author), de Jong, N. (author), Bosch, J.G. (author), Leus, G.J.T. (author)
Three-dimensional ultrasound is a powerful imaging technique, but it requires thousands of sensors and complex hardware. Very recently, the discovery of compressive sensing has shown that the signal structure can be exploited to reduce the burden posed by traditional sensing requirements. In this spirit, we have designed a simple ultrasound...
journal article 2017
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Herrero Huerta, M. (author), Lagüela, S. (author), Alfieri, S.M. (author), Menenti, M. (author)
Remote sensing imagery to monitor global biophysical dynamics requires the availability of thermal infrared data at high temporal and spatial resolution because of the rapid development of crops during the growing season and the fragmentation of most agricultural landscapes. Conversely, no single sensor meets these combined requirements. Data...
conference paper 2017
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Verstraete, H.R.G.W. (author)
Optical coherence tomography (OCT) is a technique for non-invasive imaging based on low coherence interferometry. Its main application is found in ophthalmology, where it is used for 3D in vivo imaging of the cornea and the retina. OCT has evolved over the past decade as one of the most important ancillary tests in ophthalmic practice, providing...
doctoral thesis 2017
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Abarca Prouza, A.N. (author), Xie, S. (author), Markenhof, Jules (author), Theuwissen, A.J.P. (author)
In this work, a novel approach is presented for measuring relative temperature variations inside the pixel array of a CMOS image sensor itself. This approach can give important information when compensation for dark (current) fixed pattern noise (FPN) is needed. The test image sensor consists of pixels and temperature sensors pixels (=Tixels)....
conference paper 2017
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Scaioni, Marco (author), Rosina, E. (author), L'Erario, A. (author), Díaz-Vilariño, L. (author)
The thermal analysis of buildings represents a key-step for reduction of energy consumption, also in the case of Cultural Heritage. Here the complexity of the constructions and the adopted materials might require special analysis and tailored solutions. Infrared Thermography (IRT) is an important non-destructive investigation technique that...
conference paper 2017
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Ge, X. (author), Theuwissen, A.J.P. (author)
A deep subelectron temporal noise CMOS image sensor (CIS) with a Gm-cell based pixel and a correlated-double charge-domain sampling technique has been developed for photon-starved imaging applications. With the proposed technique, the CIS, which is implemented in a standard 0.18-μm CIS process, features pixel-level amplification and achieves an...
journal article 2017
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Sun, P. (author)
doctoral thesis 2016
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Sun, P. (author), Ishihara, R. (author), Charbon, E. (author)
We proposed the world’s first flexible ultrathin-body single-photon avalanche diode (SPAD) as photon counting device providing a suitable solution to advanced implantable bio-compatible chronic medical monitoring, diagnostics and other applications. In this paper, we investigate the Geiger-mode performance of this flexible ultrathin-body SPAD...
journal article 2016
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de Visser, C.C. (author), Brunner, A.E. (author), Verhaegen, M.H.G. (author)
The distributed-spline-based aberration reconstruction (D-SABRE) method is proposed for distributed wavefront reconstruction with applications to large-scale adaptive optics systems. D-SABRE decomposes the wavefront sensor domain into any number of partitions and solves a local wavefront reconstruction problem on each partition using...
journal article 2016
Searched for: image sensor
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