Searched for: subject:"lidars"
(1 - 20 of 59)

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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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Yang, M. (author), Lopez Dekker, Paco (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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O'Donnell, J. (author), Truong, L. (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of geometric inputs for existing building models requires significant manual intervention due to the absence, or outdated nature of...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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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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Zhang, C. (author), Lindner, S.A. (author), Antolović, I.M. (author), Wolf, Martin (author), Charbon, E.E.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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Boers, Reinout (author), Knist, Christine (author), Russchenberg, H.W.J. (author), Werner, Frank (author), Wood, Robert (author), Zhang, Zhibo (author), Quaas, Johannes (author)
The cloud droplet number concentration (N<sub>d</sub>) is of central interest to improve the understanding of cloud physics and for quantifying the effective radiative forcing by aerosol-cloud interactions. Current standard satellite retrievals do not operationally provide N<sub>d</sub>, but it can be inferred from retrievals of cloud optical...
journal article 2018
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Zhou, K. (author), Gorte, B. (author), Lindenbergh, R.C. (author), Widyaningrum, E. (author)
Change detection is an essential step to locate the area where an old model should be updated. With high density and accuracy, LiDAR data is often used to create a 3D city model. However, updating LiDAR data at state or nation level often takes years. Very high resolution (VHR) images with high updating rate is therefore an option for change...
journal article 2018
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Bormans, R. P.A. (author), Lindenbergh, R.C. (author), Karimi Nejadasl, F. (author)
One of the biggest challenges for an autonomous vehicle (and hence the WEpod) is to see the world as humans would see it. This understanding is the base for a successful and reliable future of autonomous vehicles. Real-world data and semantic segmentation generally are used to achieve full understanding of its surroundings. However, deploying...
journal article 2018
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Riveiro, B. (author), Cubreiro, G. (author), Conde, B. (author), Cabaleiro, M. (author), Lindenbergh, R.C. (author), Soilán, M. (author), Caamaño, J. C. (author)
In present work it is pretended to estimate elastic parameters of beams through the combined use of precision geomatic techniques (laser scanning) and structural behaviour simulation tools. The study has two aims, on the one hand, to develop an algorithm able to interpret automatically point clouds acquired by laser scanning systems of beams...
journal article 2018
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Widyaningrum, E. (author), Lindenbergh, R.C. (author), Gorte, B.G.H. (author), Zhou, K. (author)
Various kinds of urban applications require true orthophotos. True orthophoto generation requires a DSM (Digital Surface Model) to project the photo orthogonally and minimize geometric distortion due to topographic variance. DSMs are often generated from airborne laser scan data. In urban scenes, DSM data may fail to deliver sharp and...
journal article 2018
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Puente, I. (author), Lindenbergh, R.C. (author), Van Natijne, A. (author), Esposito, R. (author), Schipper, H.R. (author)
Vulnerability of buildings to natural and man-induced hazards has become a main concern for our society. Ensuring their serviceability, safety and sustainability is of vital importance and the main reason for setting up monitoring systems to detect damages at an early stage. In this work, a method is presented for detecting changes from laser...
journal article 2018
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Terefenko, Paweł (author), Giza, Andrzej (author), Paprotny, D. (author), Kubicki, Adam (author), Winowski, Marcin (author)
In Miȩdzyzdroje, a coastal town in Poland, significant cliff retreat has been observed in recent times. It used to be considered mainly a response to storm events with particularly high water levels and wave energy. However, morphology of cliff coasts is shaped not only by the most extreme storm surges or by a number of accompanying processes...
journal article 2018
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Kang, Z. (author), Yang, Juntao (author), Zhong, Ruofei (author), Wu, Yongxing (author), Shi, Zhenwei (author), Lindenbergh, R.C. (author)
The digital mapping of road environment is an important task for road infrastructure inventory and urban planning. Automatic extraction and classification of pole-like objects can remarkably reduce mapping cost and enhance work efficiency. Therefore, this paper proposes a voxel-based method that automatically extracts and classifies three...
journal article 2018
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Lee, M.J. (author), Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Wang, Tzu Jui (author), Huang, Kuo Chin (author), Yamashita, Yuichiro (author), Yaung, Dun Nian (author), Charbon, E.E.E. (author)
We present a high-performance back-illuminated three-dimensional stacked single-photon avalanche diode (SPAD), which is implemented in 45-nm CMOS technology for the first time. The SPAD is based on a P<sup>+</sup>/Deep N-well junction with a circular shape, for which N-well is intentionally excluded to achieve a wide depletion region, thus...
journal article 2018
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Herrero Huerta, M. (author), Lindenbergh, R.C. (author), Gard, W.F. (author)
Plant leaf movement is induced by some combination of different external and internal stimuli. Detailed geometric characterization of such movement is expected to improve understanding of these mechanisms. A metric high-quality, non-invasive and innovative sensor system to analyze plant movement is Terrestrial LiDAR (TLiDAR). This technique has...
journal article 2018
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Biljecki, F. (author), Ledoux, H. (author), Stoter, J.E. (author)
Elevation datasets (e.g. point clouds) are an essential but often unavailable ingredient for the construction of 3D city models. We investigate in this paper to what extent can 3D city models be generated solely from 2D data without elevation measurements. We show that it is possible to predict the height of buildings from 2D data (their...
journal article 2017
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Widyaningrum, E. (author), Gorte, B.G.H. (author)
LiDAR data acquisition is recognized as one of the fastest solutions to provide basis data for large-scale topographical base maps worldwide. Automatic LiDAR processing is believed one possible scheme to accelerate the large-scale topographic base map provision by the Geospatial Information Agency in Indonesia. As a progressive advanced...
journal article 2017
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Broersen, Tom (author), Peters, R.Y. (author), Ledoux, H. (author)
Drainage networks play a crucial role in protecting land against floods. It is therefore important to have an accurate map of the watercourses that form the drainage network. Previous work on the automatic identification of watercourses was typically based on grids, focused on natural landscapes, and used mostly the slope and curvature of the...
journal article 2017
Searched for: subject:"lidars"
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