- document
-
Xia, Z. (author), Booij, O. (author), Kooij, J.F.P. (author)We propose a novel end-to-end method for cross-view pose estimation. Given a ground-level query image and an aerial image that covers the query's local neighborhood, the 3 Degrees-of-Freedom camera pose of the query is estimated by matching its image descriptor to descriptors of local regions within the aerial image. The...journal article 2024
- document
-
Liu, X. (author), van Gemert, J.C. (author), Nejadasl, Fatemeh Karimi (author), Booij, O. (author), Pintea, S. (author)Objects in videos are typically characterized by continuous smooth motion. We exploit continuous smooth motion in three ways. 1) Improved accuracy by using object motion as an additional source of supervision, which we obtain by anticipating object locations from a static keyframe. 2) Improved efficiency by only doing the expensive feature...conference paper 2023
- document
-
Booij, M.J. (author), van Royen, B. J. (author), Nolte, P. A. (author), Twisk, J. W.R. (author), Harlaar, J. (author), van den Noort, J. C. (author)Background: Gait adaptability is of utmost importance for keeping balance during gait in patients with knee osteoarthritis, also after total knee arthroplasty (TKA). The aims of this explorative study are: (1) assess the effect of age, knee osteoarthritis and TKA on gait adaptability; (2) assess changes in gait adaptability pre-to post-TKA...journal article 2022
- document
-
Xia, Z. (author), Booij, Olaf (author), Manfredi, Marco (author), Kooij, J.F.P. (author)This work addresses visual cross-view metric localization for outdoor robotics. Given a ground-level color image and a satellite patch that contains the local surroundings, the task is to identify the location of the ground camera within the satellite patch. Related work addressed this task for range-sensors (LiDAR, Radar), but for vision,...conference paper 2022
- document
-
Booij, Thomas (author)Retrieving actionable information from large datasets is increasingly computationally expensive due to the current trend of ever-increasing dataset sizes. Reducing dataset sizes with dimensionality reduction techniques is often necessary for statistical analysis techniques, such as classification, to be computationally feasible. Most...master thesis 2021
- document
-
Xia, Z. (author), Booij, Olaf (author), Manfredi, Marco (author), Kooij, J.F.P. (author)Cross-view matching aims to learn a shared image representation between ground-level images and satellite or aerial images at the same locations. In robotic vehicles, matching a camera image to a database of geo-referenced aerial imagery can serve as a method for self-localization. However, existing work on cross-view matching only aims at...journal article 2021
- document
-
Bijmans, H.L.J. (author), Booij, T.M. (author), Schwedersky, Anneke (author), Nedgabat, Aria (author), van Wegberg, R.S. (author)Off-the-shelf, easy-to-deploy phishing kits are believed to lower the threshold for criminal entrepreneurs going phishing. That is, the practice of harvesting user credentials by tricking victims into disclosing these on fraudulent websites. But, how do these kits impact the phishing landscape? And, how often are they used? We leverage the use...conference paper 2021
- document
-
Meinders, Evy (author), Booij, Marjolein J. (author), van den Noort, Josien C. (author), Harlaar, J. (author)Background: Walking speed is a confounding factor in biomechanical analyses of gait, but still many studies compare gait biomechanics at comfortable walking speed (CWS) that is likely to differ between groups or conditions. To identify gait deviation unrelated to walking speed, methods are needed to correct biomechanical data over the gait...journal article 2021
- document
-
Booij, M. J. (author), Harlaar, J. (author), Royen, B. J.van (author), Nolte, P. A. (author), Haverkamp, D. (author), van den Noort, Josien C. (author)Background: After total knee replacement (TKR) some patients report low self-perceived function, which is clinically measured using patient reported outcome measures (PROMs). However, PROMs, e.g. the Oxford Knee Score (OKS), inherently lack objective parameters of knee function. Biomechanical gait analysis is an objective and reliable...journal article 2021
- document
-
Booij, M. J. (author), Meinders, E. (author), Sierevelt, I. N. (author), Nolte, P. A. (author), Harlaar, J. (author), van den Noort, J. C. (author)Background: The assessment of functional recovery of patients after a total knee replacement includes the quantification of gait deviations. Comparisons to comfortable gait of healthy controls may incorrectly suggest biomechanical gait deviations, since the usually lower walking speed of patients already causes biomechanical differences....journal article 2021
- document
-
Booij, Tim M. (author), Verburgh, Thijmen (author), Falconieri, Federico (author), van Wegberg, R.S. (author)Dark net markets are a competitive environment. As these anonymous markets enable criminals to trade illicit goods or services, this causes vendors to operate under pseudonyms, rather than real-world identities. The constant battle between market admins and law enforcement makes the typical lifespan of a market two years. When a market...conference paper 2021
- document
-
Booij, M. J. (author), Richards, R. (author), Harlaar, J. (author), van den Noort, J. C. (author)Objective: To evaluate muscle activation patterns and co-contraction around the knee in response to walking with modified gait patterns in patients with medial compartment knee-osteoarthritis (KOA). Design: 40 medial KOA patients walked on an instrumented treadmill. Surface EMG activity from seven knee-spanning muscles (gastrocnemius,...journal article 2020
- document
-
Booij, Tim (author)The amount of people and devices connected through the Internet has been growing at a rapid pace; as of June 2019 58,8% of the world’s population and billions of devices are joined by this vast network of information resources and services. Not every Internet user however has benign intentions. Cybercriminals use this technology for their own...master thesis 2019
- document
-
Bijmans, H.L.J. (author), Booij, T.M. (author), Dörr, C. (author)Since the release of a browser-based cryptominer by Coinhive in 2017, the easy use of these miners has skyrocketed illicit cryptomining in 2017 and continued in 2018. This method of monetizing websites attracted website owners, as well as criminals seeking new ways to earn a profit. In this paper, we perform two large studies into the world...conference paper 2019
- document
-
Richards, Rosie E. (author), van den Noort, Josien C. (author), van der Esch, Martin (author), Booij, Marjolein J. (author), Harlaar, J. (author)Background: Gait modifications can reduce the knee adduction moment, a representation of knee loading. Reduced loading may help to slow progression of medial knee osteoarthritis. We aimed to investigate the response of patients with medial knee osteoarthritis to direct feedback on the knee adduction moment as a method for modifying the gait...journal article 2018
- document
-
Richards, R. (author), van den Noort, J. C. (author), van der Esch, M. (author), Booij, M.T. (author), Harlaar, J. (author)Background: The knee adduction moment (KAM) is often elevated in medial knee osteoarthritis (KOA). The aim of this study was to evaluate effects on KAM and patient-reported outcomes of a six-week gait training program. Methods: Twenty-one patients (61 ± 6 years) with KOA participated in a six-week biofeedback training program to encourage...journal article 2018
- document
- Booij, T.M. (author), Klavers, R.A. (author) bachelor thesis 2015
- document
-
Booij, M. (author)Being one of the premium German car brands, Audi has a long-standing “Leichtbau” tradition. Living up to the company motto “Vorsprung durch Technik”, Audi is currently working on implementing CFRP in cars such as the S7, A8 and R8. In a combined internship and thesis project in Neckarsulm, Germany, I assessed the performance and cost of...journal article 2013
- document
-
Booij, A. (author), Hillen, M.M. (author), Santema, S.C. (author)SMART formulation is an essential aspect of the Best Value philosophy to demonstrate performance, evaluate proposals and is required for the continuous improvements within organizations. Based on an evaluation of projects that have been tendered with the BVP award mechanism, it was concluded that both for the tender documents, as the interviews...journal article 2013
- document
-
Van Esse, W.R. (author), Perrin, C. (author), Booij, M.J. (author), Augustijn, D.C.M. (author), Fenicia, F. (author), Kavetski, D. (author), Lobligeois, F. (author)Models with a fixed structure are widely used in hydrological studies and operational applications. For various reasons, these models do not always perform well. As an alternative, flexible modelling approaches allow the identification and refinement of the model structure as part of the modelling process. In this study, twelve different...journal article 2013