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Tabakovic, A. (author), Lemmens, Jeremy (author), Tamis, J. (author), van Vliet, Dave (author), Nahar, Sayeda (author), Suitela, Willem (author), van Loosdrecht, Mark C.M. (author), Leegwater, G.A. (author)Bitumen is a key constitutive material in asphalt pavements. It binds together the rock scaffolding of a pavement. Bitumen provides asphalt pavement with flexibility and enables it to respond to traffic loading and return to its original condition after the loading, i.e. bitumen restores/repairs the damage. In Porous Asphalt (PA) or...journal article 2023
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Lemmens, C.W.J. (author)Vibrations of a circular drum is in almost all textbooks discusssed with the standard drum, having a Dirichlet boundary and no interior boundary. Ths article describes some less common (less boring ;-) ) drum types:<br/><br/>1) Neumann boundary outside and a support in a point exactly in the center<br/>2) Neumann boundary outside and a ring...journal article 2022
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Capturing LiDAR and Imagery Simultaneously: How Major Cities May Benefit from a Hybrid Sensor SystemLemmens, M.J.P.M. (author)People continue to migrate from rural areas to major cities, driving sustained urban growth and increasing the demand for accurate, detailed and up-to-date 3D city models. The creation of such models is still a cumbersome endeavour but new advancements, such as the combination of three sensor types – nadir camera, oblique cameras and a Lidar...journal article 2020
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Lemmens, M.J.P.M. (author)The use of an unmanned aerial system (UAS) – cameras and Lidar sensors mounted on an unmanned aerial vehicle (UAV or ‘drone’) – to acquire geodata for mapping purposes has evolved beyond infancy and is now rapidly maturing. How will UAS mapping evolve in foreseeable future? To envisage where exactly UAS technology is heading, it is appropriate...journal article 2020
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- Lemmens, M.J.P.M. (author) contribution to periodical 2020
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Kovacsova, N. (author), Grottoli, M. (author), Celiberti, Francesco (author), Lemmens, Yves (author), Happee, R. (author), Hagenzieker, Marjan (author), de Winter, J.C.F. (author)Powered two-wheeler riders are frequently involved in crashes at intersections because an approaching car driver fails to give right of way. This simulator study aimed to investigate how riders perform an emergency braking maneuver in response to an oncoming car and, second, whether longitudinal motion cues provided by a motion platform...journal article 2020
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Sajadian, Melika (author), Teixeira, Ana (author), Sadeghi Tehrani, F. (author), Lemmens, M.J.P.M. (author)Built environments developed on compressible soils are susceptible to land deformation. The spatiotemporal monitoring and analysis of these deformations are necessary for sustainable development of cities. Techniques such as Interferometric Synthetic Aperture Radar (InSAR) or predictions based on soil mechanics using in situ characterization,...journal article 2020
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Lepère, Gregory (author), Lemmens, M.J.P.M. (author)Terrestrial laser scanning is becoming an increasingly preferred surveying technique for the 3D documentation of historical buildings. 3D point clouds provide a wealth of information which advanced 3D mapping software can exploit in a relatively simple way, at least when compared to the tedious surveying techniques of the past. However,...journal article 2019
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Lemmens, M.J.P.M. (author)Accurate geoinformation about urban areas, public buildings or historical sites is in great demand. It has become astonishingly easy to capture these scenes through cameras or laser scanning or to acquire open data from a diversity of sources. Professionals without a surveying background can do the job, but such professionals require reliable,...journal article 2019
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Lemmens, M.J.P.M. (author)Did you know that you can waste a week or more per year hunting for a parking space in busy cities? Nowadays, smart parking apps offer a much-needed answer to the problem – and mobile mapping point clouds and imagery are core ingredients of the solution. Besides saving time by guiding you straight to an available spot close to your destination,...journal article 2019
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- Lemmens, M.J.P.M. (author) journal article 2019
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Lemmens, M.J.P.M. (author)The battle against poverty in developing countries has always been associated with the issue of land. Since the turn of the millennium, the focus has been on facilitating the official registration of land rights by the poor and the vulnerable. Many countries in sub-Saharan Africa still lack a well-functioning land administration system,...journal article 2019
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- Lemmens, M.J.P.M. (author) journal article 2019
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Grottoli, M. (author), Cleij, D. (author), Pretto, Paolo (author), Lemmens, Yves (author), Happee, R. (author), Bülthoff, Heinrich H. (author)Optimization-based motion cueing algorithms based on model predictive control have been recently implemented to reproduce the motion of a car within the limited workspace of a driving simulator. These algorithms require a reference of the future vehicle motion to compute a prediction of the system response. Assumptions regarding the future...journal article 2019
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Lemmens, M.J.P.M. (author)The ‘smart city’ concept entirely relies on a permanent stream of massive amounts of data acquired by a great variety of sensors distributed throughout the city. Smart use of all this data requires integration with 3D city maps for which point clouds, acquired by laser scanning or photogrammetry, are the main sources. The author<br/>of this...journal article 2018
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Lemmens, M.J.P.M. (author)A knowledge-based system exploits the knowledge, which a human expert uses for completing a complex task, through a database containing decision rules, and an inference engine. Already in the early nineties knowledge-based systems have been proposed for automated image classification. Lack of success faded out initial interest and enthusiasm,...journal article 2018
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Zheng, M. (author), Lemmens, M.J.P.M. (author), van Oosterom, P.J.M. (author)This paper presents our work on automated classification of Mobile Laser Scanning (MLS) point clouds of urban scenes with features derived from cylinders around points of consideration. The core of our method consists of spanning up a cylinder around points and deriving features, such as reflectance, height difference, from the points present...conference paper 2018
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Allegaert, Elias (author), Lemmens, Yves (author), la Rocca, G. (author)As the complexity of high-tech systems continuously increases, engineers look for possibilities to reduce time and cost of the development of these systems. Architecture- based design enables a front-loaded design process with knowledge reuse. By enabling the automatic synthesis of simulation models, different configurations of an...conference paper 2017
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Zheng, M. (author), Lemmens, M.J.P.M. (author), van Oosterom, P.J.M. (author)This paper focusses on the feasibility of classifiers, developed for classifying multispectral images, for assigning classes to point clouds of urban scenes. The motivation of our research is that dense point clouds require fast classification methods to extract meaningful information within a reasonable amount of time and multispectral...conference paper 2017
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Zheng, M. (author), Lemmens, M.J.P.M. (author), van Oosterom, P.J.M. (author)The demand for 3D maps of cities and road networks is steadily growing and mobile laser scanning (MLS) systems are often the preferred geo-data acquisition method for capturing such scenes. Because MLS systems are mounted on cars or vans they can acquire billions of points of road scenes within a few hours of survey. Manual processing of...conference paper 2017