Pages
- 1
- 2
- document
-
Cai, Cynthia (author)Point cloud data are gaining more importance in the Geomatics domain, with the development of modern sensing technologies like LiDAR and photogrammetry. The size of massive point clouds are growing, and the performance of traditional database solutions for its data management become insufficient. It remains a huge challenge for researchers to...master thesis 2024
- document
-
Chen, Siyuan (author), Laefer, Debra F. (author), Zeng, Xiangding (author), Truong-Hong, Linh (author), Mangina, Eleni (author)Road networks are essential elements of a community's infrastructure and need regular inspection. Present practice requires traffic interruptions and safety risks for inspectors. The road detection system based on vehicle-mounted lasers is also quite mature, offering advantages such as high-precision defect detection, high automation, and...journal article 2024
- document
-
Gordon, Matthew (author), Batallé Garcia, A. (author), De Wolf, Catherine (author), Sollazzo, Aldo (author), Dubor, Alexandre (author), Wang, T. (author)To address the need for a shift from a linear to a circular economy in the built environment, this paper develops a semi-automated assistive process for planning building material deconstruction for reuse using sensing and scanning, Scan-to-BIM, and computer vision techniques. These methods are applied and tested in a real-world case study in...journal article 2023
- document
-
Phan, Anh Thu Thi (author), Huynh, Thi Ngoc (author), Truong-Hong, Linh (author)Laser scanning (LS) is an effective technology for accurately capturing point clouds of visible surfaces of objects in 3D scenes. The point clouds were subsequently used for various applications, for example, generating 2D drawings of the floor or building information models (BIM) and structural inspection. However, in practice, the products...conference paper 2023
- document
-
Wang, Xufei (author), Yang, Z. (author), Cheng, Xiaojun (author), Stoter, J.E. (author), Xu, Wenbing (author), Wu, Zhenlun (author), Nan, L. (author)Registering point clouds of forest environments is an essential prerequisite for LiDAR applications in precision forestry. State-of-the-art methods for forest point cloud registration require the extraction of individual tree attributes, and they have an efficiency bottleneck when dealing with point clouds of real-world forests with dense...journal article 2023
- document
-
Nguyen, Anh Rin (author), Huynh, Ngoc Thi (author), Truong-Hong, Linh (author), Phan, Anh Thu Thi (author)In recent years, there has been a significant increase in inspecting and evaluating transport infrastructure. Traditionally, these structural data were collected manually by measuring and redrawing the construction against design documents. In recent decades, laser scanning technology can help collect 3D data rapidly and accurately. The 3D...conference paper 2023
- document
-
Boomaars, Kay (author)Sea level rise causes more difficulties for coastal maintenance. Although hard structures were built in the past to prevent for flooding, nature based solutions are preferred more recently. For the application of nature based solutions, a better understanding of the coastal processes is desired. Dry sand is transported towards the dunes by...master thesis 2022
- document
-
Yang, Haocheng (author)Tactile internet enables communication in a new layer of immersion, touch. It has the potential to transform the landscape of digital communication. However, the achievable scale of tactile internet is severely limited by its 1 ms round-trip latency. We propose a workaround for the latency through tactile simulation, which can bypass the...bachelor thesis 2022
- document
-
Chen, Z. (author), Ledoux, H. (author), Khademi, S. (author), Nan, L. (author)While three-dimensional (3D) building models play an increasingly pivotal role in many real-world applications, obtaining a compact representation of buildings remains an open problem. In this paper, we present a novel framework for reconstructing compact, watertight, polygonal building models from point clouds. Our framework comprises three...journal article 2022
- document
-
Truong-Hong, Linh (author), Lindenbergh, R.C. (author)Three-dimensional (3D) geometric bridge models play an important role in bridge inspection, assessment, and management. Laser scanning nowadays offers a cost-efficient method to capture dense, accurate 3D topographic data of surfaces of the bridge. However, given the typical complexity of bridges, current workflows using commercial software...journal article 2022
- document
-
Truong-Hong, Linh (author), Lindenbergh, R.C. (author)In construction projects, inspection of structural components mostly relies on classical measurements obtained by measuring tapes, levelling, or total stations. With those methods, only a few points on the structure can be measured, and the resulting inspection may not fully reflect the actual, detailed condition of the complete object. Laser...journal article 2022
- document
-
Müller, Jan U. (author), Weinmann, M. (author), Klein, Reinhard (author)We propose an efficient and GPU-accelerated sampling framework which enables unbiased gradient approximation for differentiable point cloud rendering based on surface splatting. Our framework models the contribution of a point to the rendered image as a probability distribution. We derive an unbiased approximative gradient for the rendering...conference paper 2022
- document
-
Liu, Zhenyu (author), van Oosterom, P.J.M. (author), Balado Frías, J. (author), Swart, Arjen (author), Beers, Bart (author)Vehicle-related ground occlusion is a common problem in MLS data. This study aims to design a detection and reconstruction method of static vehicle-related ground occlusion for MLS data. Ground extraction and vehicle segmentation are performed on the input point cloud data in advance. Then an α-shape boundary based on the prior vehicle...journal article 2022
- document
-
Chen, Zhaiyu (author)Three-dimensional building models play a pivotal role in shaping the digital twin of our world. With the advance of sensing technologies, unprecedented data acquisition capabilities on capturing the built environment have surfaced, with photogrammetry and light detection and ranging being the two important sources, both of which can acquire...master thesis 2021
- document
-
Truong-Hong, Linh (author), Lindenbergh, R.C. (author), Nguyen, Thu Anh (author)Purpose: Terrestrial laser scanning (TLS) point clouds have been widely used in deformation measurement for structures. However, reliability and accuracy of resulting deformation estimation strongly depends on quality of each step of a workflow, which are not fully addressed. This study aims to give insight error of these steps, and results...journal article 2021
- document
-
Truong-Hong, Linh (author), Lindenbergh, R.C. (author)A three-dimensional (3D) geometric model of a bridge plays an important role in inspection, assessment and management of the bridge. As most bridges were built after the second world war, 3D bridge models are rarely available. A recent development in laser scanning offers a cost-efficient method to capture dense, accurate 3D topographic data...book chapter 2021
- document
-
Ruben, P.A. (author), Sileryte, R. (author), Agugiaro, G. (author)Urban mining aims at reusing building materials enclosed in our cities. Therefore, it requires accurate information on the availability of these materials for each separate building. While recent publications have demonstrated that such information can be obtained using machine learning and data fusion techniques applied to hyperspectral...journal article 2020
- document
-
Ren, Shaoting (author), Menenti, M. (author), Jia, Li (author), Zhang, Jing (author), Zhang, Jingxiao (author), Li, Xin (author)Mountain glaciers are excellent indicators of climate change and have an important role in the terrestrial water cycle and food security in many parts of the world. Glaciers are the major water source of rivers and lakes in the Nyainqentanglha Mountains (NM) region, where the glacier area has the second largest extent on the Tibetan Plateau....journal article 2020
- document
-
Widyaningrum, E. (author), Peters, R.Y. (author), Lindenbergh, R.C. (author)Automatic building extraction and delineation from airborne LiDAR point cloud data of urban environments is still a challenging task due to the variety and complexity at which buildings appear. The Medial Axis Transform (MAT) is able to describe the geometric shape and topology of an object, but has never been applied for building roof...journal article 2020
- document
-
Truong-Hong, Linh (author), Lindenbergh, R.C. (author)This paper proposes a framework to automatic extract structural elements of reinforced concrete buildings from laser scanning data, which can be used in dimensional quality control and surface defect identification. The framework deploys both spatial information of a point cloud and contextual knowledge of building structures to extract the...journal article 2020
Pages
- 1
- 2