Searched for: subject%3A%22quality%255C%2Bassessment%22
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Smitskamp, Gwennan (author)
The need to capture environments and objects in 3 dimensions to produce a high quality digital representation is proving to be useful in many applications in the world, where there is an increasing dependence on digital spaces. Point Clouds are a data type to represent 3D objects and scenes. During the processing of the point cloud data,...
master thesis 2022
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Mody, Prerak (author), Chaves de Plaza, N.F. (author), Hildebrandt, K.A. (author), Staring, M. (author)
Bayesian Neural Nets (BNN) are increasingly used for robust organ auto-contouring. Uncertainty heatmaps extracted from BNNs have been shown to correspond to inaccurate regions. To help speed up the mandatory quality assessment (QA) of contours in radiotherapy, these heatmaps could be used as stimuli to direct visual attention of clinicians to...
conference paper 2022
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Wang, Yichao (author), Dankelman, J. (author), Ruijters, Danny (author)
In this study, a novel anthropomorphic head phantom for quantitative image quality assessment in cone beam computed tomography (CBCT) is proposed. The phantom is composed of tissue equivalent materials (TEMs) which are suitable for cost-efficient fabrication methods such as silicone casting and 3D printing. A monocalcium phosphate/gypsum...
journal article 2022
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Clemens, F.H.L.R. (author), Lepot, M.J. (author), Blumensaat, Frank (author), Leutnant, Dominik (author), Gruber, Guenter (author)
Once data have been recorded, data validation procedures have to be conducted to assess the quality of the data, i.e. give a confidence grade. Furthermore, gaps may occur in time series and, depending on the purposes, these can be given values by application of e.g. interpolation. Since both aspects are strongly correlated, this chapter gives an...
book chapter 2021
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Swuste, P.H.J.J. (author), Galera, Asun (author), Van Wassenhove, Wim (author), Carretero-Gómez, José (author), Arezes, Pedro (author), Kivistö-Rahnasto, Jouni (author), Forteza, Francisco (author), Motet, Gilles (author), Reyniers, Kelly (author)
Professionalization of safety is gaining some interest in international safety literature, including (post)graduate training and education of safety experts. Different from research, there are hardly any publications and discussions on the quality of (post) graduate safety education in the academic safety literature. This article starts with a...
journal article 2021
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Salinas Rodriquez, Sergio (author), Barba-Macías, Everardo (author), Mata, Dulce Infante (author), Nava-López, Mariana Zareth (author), Neri-Flores, Iris (author), Varela, Ricardo Domínguez (author), González Mora, Ignacio D. (author)
Almost a decade ago, the Mexican government targeted to establish environmental water reserves (EWR)—a volume of water allocated for ecological protection based on the Environmental Flow Mexican Norm (eflows, NMX-AA-159-SCFI-2012, ratified in 2017)—in strategic low-pressured for water use and high conservation importance river basins throughout...
journal article 2021
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Guo, Y. (author)
Electron tomography is a powerful tool in materials science to characterize nanostructures in three dimensions (3D). In scanning transmission electron microscopy (STEM), the sample under study is exposed to a focused electron beam and tilted to obtain twodimensional (2D) projections at different angles; many imaging modes are available such as...
doctoral thesis 2020
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Grandia, Leander (author)
Atrial Fibrillation (AF) is a common type of arrhythmia, characterized by rapid and irregular contraction of the atria. Irregular contraction of the atria is caused by erroneous electrical activation, originating from the tissue around the Pulmonary Veins (PV) in the Left Atrium (LA). Catheter-based treatment of AF includes ablation of the...
master thesis 2019
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Guo, Y. (author), Rieger, B. (author)
Regularization has been introduced to electron tomography for enhancing the reconstruction quality. Since over-regularization smears out sharp edges and under-regularization leaves the image too noisy, finding the optimal regularization strength is crucial. To this end, one can either manually tune regularization parameters by trial and error...
conference paper 2019
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Wang, Yuyang (author)
Wearable health has become a striking area in our daily life.<br/>Electrocardiogram (ECG) is one of the biomedical signals collected by the wearable or portable devices, which is widely used in heart rate monitoring and cardiac diagnosis. However, automatic ECG signal analysis is difficult in real application because the signals are easy to be...
master thesis 2018
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Romero Herrera, N.A. (author), Doolaard, J.M. (author), Guerra Santin, O. (author), Jaśkiewicz, T.J. (author), Keyson, D.V. (author)
The energy and building research community acknowledges the importance of including occupants' wellbeing in the evaluation of building energy performance. Particularly in office buildings, occupants' comfort assessment is not yet a common practice, partially due to the shortcomings of the comfort assessment activities. Contextual factors such as...
journal article 2018
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Guo, Y. (author), Rieger, B. (author)
Bimodal tomography introduces a weighting factor α to incorporate X-ray data into projection images acquired from scanning transmission electron microscope (STEM) for achieving an atom-specific three-dimensional (3D) reconstruction of an object on the nanoscale. Currently its value is chosen by computing reconstructions for a large range of...
conference paper 2018
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Dijkstra, Lotte (author)
The Utrechtseweg provincial road is situated in the centre of the Netherlands, following the edges of the lateral moraines of both the Utrechtse Heuvelrug and the Veluwe massief. The road has a long history as being bo a landscape structuring lane and the main road infrastructure between the cities of Utrecht, Arnhem, and Zutphen, and the...
master thesis 2017
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Zhou, Yuan (author)
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master thesis 2017
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Santokhi, Maniek (author)
A world without digital images is unthinkable in this era of information and communication technology. Billions of images are created, shared and ultimately enjoyed by users every day. However, digital images are sensitive to a wide variety of distortions during the delivery mechanism it goes through. Any of the distortions that can arise during...
master thesis 2017
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Heck, P.M. (author), Zaidman, A.E. (author)
Until now, quality assessment of requirements has focused on traditional up-front requirements. Contrasting these traditional requirements are just-in-time (JIT) requirements, which are by definition incomplete, not specific and might be ambiguous when initially specified, indicating a different notion of "correctness." We analyze how the...
journal article 2017
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Thomsen, A.F. (author)
This report is dedicated to the main problems of building pathologies in the Netherlands and the main solutions through research and practice as questioned by the CIB W086 Building Pathology Commission for its 2014 meeting in Sao Paulo, Brazil. Objective is to contribute to the Research Roadmap 2014-2016 as communicated in January 2014. The...
conference paper 2014
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Volker, L. (author), Ligtvoet, A. (author), van den Boomen, M. (author), Wessels, Peter (author), van der Lei, T.E. (author), Herder, P.M. (author)
In times of restructuring governmental policies and resources, the<br/>need for strategic asset management is growing. Maturity models offer<br/>organisations a structure to assist them in improving their asset management<br/>performance. We present the results of a repeated maturity measurement based<br/>on the infrastructure management...
journal article 2013
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Bhattacharya, P. (author)
The possibility of an automatic object matching process in combination with a VGI (Volunteered Geographical Information) type of map has been explored in this research. TOP10NL, the topographic map of the Netherlands and OpenStreetMap (OSM), the VGI type of map have been chosen for this purpose. The object matching process in this research...
master thesis 2012
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Liu, H. (author), Heynderickx, I. (author)
Developing an objective metric, which automatically quantifies perceived image quality degradation induced by blur, is highly beneficial for current digital imaging systems. In many applications, these objective metrics need to be of the noreference (NR) type, which implies that quality prediction is based on the distorted image only. Recent...
journal article 2011
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