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Mamali, D. (author)Atmospheric aerosol particles are solid or liquid particles suspended in the atmosphere. They are directly emitted into the atmosphere or they are formed via the oxidation of gaseous precursors. Understanding the behavior of particles in the atmosphere is particularly important because they can affect the Earth’s climate, visibility, air quality...doctoral thesis 2020
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Oosterlo, P. (author), Hofland, Bas (author), van der Meer, J.W. (author), Overduin, Maarten (author), Steendam, Gosse Jan (author)Oosterlo et al. (2019) developed a system using two terrestrial laser scanners, which can measure run-up heights, depths and velocities of waves on a dike in field situations. The system has now been placed next to two overtopping tanks on a dike in the Eems-Dollard estuary in the Netherlands to measure during actual severe winter storms. The...abstract 2020
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Vos, S.E. (author), Spaans, Lennard (author), Reniers, A.J.H.M. (author), Holman, Rob (author), McCall, Robert (author), de Vries, S. (author)Intertidal bars are naturally occurring morphological features along the waterline of sandy beaches. Present quantitative knowledge on intertidal bar behavior is limited, due to the scarcity of data resources and the limitations of traditional survey techniques. To investigate and quantify the cross-shore morphologic behavior of intertidal...journal article 2020
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Bennett, Rohan (author), van Oosterom, P.J.M. (author), Lemmen, Christiaan (author), Koeva, Mila (author)Land administration constitutes the socio-technical systems that govern land tenure, use, value and development within a jurisdiction. The land parcel is the fundamental unit of analysis. Each parcel has identifiable boundaries, associated rights, and linked parties. Spatial information is fundamental. It represents the boundaries between land...contribution to periodical 2020
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Zhou, K. (author), Lindenbergh, R.C. (author), Gorte, Ben (author), Zlatanova, S. (author)Change detection is essential to keep 3D city models up-to-date. LiDAR data with high accuracy are used to create 3D city models. However, updating LiDAR data at state or nation level often takes around a decade. Very high resolution (VHR) stereo images, with often yearly updating rate and dense 3D information, provide an option for...journal article 2020
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Balado Frías, J. (author), González, Elena (author), Arias, Pedro (author), Castro, David (author)Traffic signs are a key element in driver safety. Governments invest a great amount of resources in maintaining the traffic signs in good condition, for which a correct inventory is necessary. This work presents a novel method for mapping traffic signs based on data acquired with MMS (Mobile Mapping System): images and point clouds. On the...journal article 2020
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Fan, Guangpeng (author), Nan, L. (author), Chen, Feixiang (author), Dong, Yanqi (author), Wang, Zhiming (author), Li, Hao (author), Chen, Danyu (author)Tree-level information can be estimated based on light detection and ranging (LiDAR) point clouds. We propose to develop a quantitative structural model based on terrestrial laser scanning (TLS) point clouds to automatically and accurately estimate tree attributes and to detect real trees for the first time. This model is suitable for forest...journal article 2020
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Balado, Jesús (author), van Oosterom, P.J.M. (author), Díaz-Vilarino, L. (author), Meijers, B.M. (author)Many of the point cloud processing techniques have their origin in image processing. But mathematical morphology, despite being one of the most used image processing techniques, has not yet been clearly adapted to point clouds. The aim of this work is to design the basic operations of mathematical morphology applicable to 3D point cloud data,...journal article 2020
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Gutierrez, I. (author), Gjermundsen, E. Før (author), Harcourt, W.D. (author), Kuschnerus, M. (author), Tonion, F. (author), Zieher, T. (author)Landslides endanger settlements and infrastructure in mountain areas across the world. Monitoring of landslides is therefore essential in order to understand and possibly predict their behavior and potential danger. Terrestrial laser scanning has proven to be a successful tool in the assessment of changes on landslide surfaces due to its high...journal article 2020
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Padmanabhan, P. (author), Zhang, C. (author), Charbon-Iwasaki-Charbon, E. (author)Direct time-of-flight (DTOF) is a prominent depth sensing method in light detection and ranging (LiDAR) applications. Single-photon avalanche diode (SPAD) arrays integrated in DTOF sensors have demonstrated excellent ranging and 3D imaging capabilities, making them promising candidates for LiDARs. However, high background noise due to solar...journal article 2019
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Ronchini Ximenes, A. (author)Constant increase in data processing efficiency has enabled, among many other things, the intensive use of depth mapping technologies. Consumer applications, such as gaming, augmented and virtual realities (AR/VR), and other human-machine interfaces, are typically based on intensive image processing, either by triangulation and/or structured...doctoral thesis 2019
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Zhang, C. (author)In conventional applications, such as bio-imaging and microscopy, SPAD is typically used as a single-photon counter. However, this advantage has been challenged by other photon-counting technologies, especially from CMOS-based QIS. Comparatively, apart from single-photon counting capability, QIS is superior to SPAD in terms of intrinsic multi...doctoral thesis 2019
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Oosterlo, P. (author), Hofland, Bas (author), van der Meer, J.W. (author), Overduin, Maarten (author), Steendam, Gosse Jan (author), Nieuwenhuis, Jan-Willem (author), van Vledder, G.P. (author), Steetzel, Henk (author), Reneerkens, Michiel (author)Wave overtopping is commonly measured using overtopping tanks. In this paper, an alternative system is developed by using two laser scanners. It measures wave run-up, as well as layer thicknesses and front velocities, both during normally and obliquely incident waves on a dike in the field. The paper considers the first field validation tests...conference paper 2019
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- Oosterlo, P. (author), Hofland, Bas (author), van der Meer, J.W. (author), Overduin, Maarten (author), Steendam, Gosse Jan (author), Nieuwenhuis, Jan-Willem (author), van Vledder, G.P. (author), Steetzel, Henk (author), Reneerkens, Michiel (author) abstract 2019
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Yang, M. (author), Lopez Dekker, F.J. (author), Dheenathayalan, P. (author), Liao, Mingsheng (author), Hanssen, R.F. (author)To correctly interpret the estimated displacements in InSAR point clouds, especially in the built environment, these need to be linked to real-world structures. This requires the accurate and precise 3D positioning of each point. Artificial ground control points (GCPs), such as corner reflectors, serve this purpose, but since they require...journal article 2019
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Anders, K. (author), Lindenbergh, R.C. (author), Vos, S.E. (author), Mara, H. (author), de Vries, S. (author), Höfle, B. (author)Geomorphic processes occur spatially variable and at varying magnitudes, frequencies and velocities, which poses a great challenge to current methods of topographic change analysis. For the quantification of surface change, permanent terrestrial laser scanning (TLS) can generate time series of 3D point clouds at high temporal and spatial...journal article 2019
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O'Donnell, J. (author), Truong-Hong, Linh (author), Boyle, N. (author), Corry, Edward (author), Cao, Jun (author), Laefer, Debra F. (author)Current processes that create Building Energy Performance Simulation (BEPS) models are time consuming and costly, primarily due to the extensive manual inputs required for model population. In particular, generation of geometric inputs for existing building models requires significant manual intervention due to the absence, or outdated nature of...journal article 2019
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Zhang, C. (author), Lindner, S.A. (author), Antolović, I.M. (author), Wolf, Martin (author), Charbon-Iwasaki-Charbon, E. (author)Per-pixel time-to-digital converter (TDC) architectures have been exploited by single-photon avalanche diode (SPAD) sensors to achieve high photon throughput, but at the expense of fill factor, pixel pitch and readout efficiency. In contrast, TDC sharing architecture usually features high fill factor at small pixel pitch and energy efficient...journal article 2018
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Shen, Y. (author), Lindenbergh, R.C. (author), Wang, Jinguo (author), Ferreira, Vagner G. (author)Bricks are the vital component of most masonry structures. Their maintenance is critical to the protection of masonry buildings. Terrestrial Light Detection and Ranging (TLidar) systems provide massive point cloud data in an accurate and fast way. TLidar enables us to sample and store the state of a brick surface in a practical way. This...journal article 2018
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Radulovic, Aleksandra (author), Sladic, Dubravka (author), Govedarica, Miro (author), Ristic, Aleksandar (author), Jovanovic, Dušan (author)Survey, establishment and maintenance of utility network in Serbia are defined by the Law on state survey and cadastre (2009), the Rulebook on survey and utility network cadastre (2010), the Manual for implementation and maintenance of the utility network digital database (2005) and the Law on the procedure for registration in the real estate...conference paper 2018