- document
-
Liu, Zhenyu (author), van Oosterom, P.J.M. (author), Balado Frías, J. (author), Swart, Arjen (author), Beers, Bart (author)The Mobile Laser Scanning (MLS) data inevitably includes dynamic objects because there are always other vehicles (e.g., other cars, motorbikes, bikes, etc.) moving in the area near the MLS data collection vehicle on the road. These dynamic objects need to be removed in advance for many point cloud applications. This paper designs an efficient...journal article 2023
- document
-
Kara, A. (author), van Oosterom, P.J.M. (author), Kathmann, Ruud (author), Lemmen, Christiaan (author)The timely and effective dissemination of property values is an essential part of a transparent and efficient property valuation system. Over the last decade, web-based data-sharing systems have been increasingly used for the dissemination of assessed property values. 3D valuation units (e.g., condominium) and groups (aggregation of valuation...journal article 2023
- document
-
Peng, D.L. (author), Meijers, B.M. (author), van Oosterom, P.J.M. (author)When users zoom in or out on a digital map, the map should change correspondingly to present geographical information at proper levels. A way to help map users better keep track of their interested objects is to change the map smoothly instead of discretely switching between several levels of detail. This paper focuses on the problem of...journal article 2023
- document
-
Ramlakhan, Rohit (author), Kalogianni, E. (author), van Oosterom, P.J.M. (author), Atazadeh, Behnam (author)One of the significant challenges in current 2D Land Administration Systems (LAS) is defining and registering the Rights, Restrictions and Responsibilities (RRRs) attached to the underground objects. A 3D LAS can facilitate a better understanding, as well as a more efficient registration and clear visualisation of the RRRs than a 2D LAS,...journal article 2023
- document
-
Ying, Shen (author), van Oosterom, P.J.M. (author), Fan, Hongchao (author)The recent years observe the vast development in new techniques and methods for modelling, visualization, and analysis of 3D digital cities, as the need of digital twins of urban environment in different applications and simulations has been increased dramatically. This special issue attempts to give an overview of the recent progress and...journal article 2023
- document
-
Kalogianni, E. (author), Kara, A. (author), Beck, Anthony (author), Paasch, Jesper M. (author), Zevenbergen, Jaap (author), Dimopoulou, Efi (author), Kitsakis, Dimitrios (author), van Oosterom, P.J.M. (author), Lemmen, Christiaan (author)Among the topics that are introduced and/ or being refined in the context of the revision of the LADM 19152:2012, the legal Land Administration-related aspects are being investigated. With the knowledge and the experience from the developments of the LADM so far, and the ongoing discussion between the parties involved in the standardisation...conference paper 2022
- document
-
Kara, A. (author), Rowland, Alexandra (author), van Oosterom, P.J.M. (author), Stubkjaer, Erik (author), Çağdaş, Volkan (author), Folmer, E (author), Lemmen, Christiaan (author), Quak, C.W. (author), Meggiolaro, Laura (author)A code list in Unified Modeling Language (UML), a simple list of values without any structure, can be employed as a simple data type to further capture the semantics of a domain. The code list values as used in international standards (e.g. ISO and OGC) are generally presented without definition, reference to the source of a definition, multi...conference paper 2022
- document
-
Kara, A. (author), van Oosterom, P.J.M. (author), Kathmann, Ruud (author), Ilgar, Azer (author), Lemmen, Christiaan (author)The interest in using 3D data in property valuation has been increasing during the last decade. The usage of 3D data models in valuation can be basically grouped in two main categories: (a) supporting mathematical models with variables produced through 3D analyses (e.g. view) in order to better estimate the values of properties and (b) consuming...conference paper 2022
- document
-
Kalogianni, E. (author), Gruler, Hans Christoph (author), Bar-Maor, Amir (author), Harold, Bruce (author), Lemmon, Tim (author), Lemmen, Christiaan (author), van Oosterom, P.J.M. (author)The ISO 19152:2012 Land Administration Domain Model (LADM), focuses on standardised modelling of land information at the conceptual level, and together with LADM’s three main packages, it has a dedicated sub package for Spatial and Surveying representation. The first edition of the standard provides multiple spatial representations, and a rather...conference paper 2022
- document
- van Oosterom, P.J.M. (author), Unger, Eva Maria (author), Lemmen, Christiaan (author) journal article 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
-
van Oosterom, P.J.M. (author), van Oosterom, S.J.M. (author), Liu, Haicheng (author), Thompson, R.J. (author), Meijers, B.M. (author), Verbree, E. (author)Point clouds contain high detail and high accuracy geometry representation of the scanned Earth surface parts. To manage the huge amount of data, the point clouds are traditionally organized on location and map-scale; e.g. in an octree structure, where top-levels of the tree contain few points suitable for small scale overviews and lower...journal article 2022
- document
-
Guler, Dogus (author), van Oosterom, P.J.M. (author), Yomralioglu, Tahsin (author)The condominium rights, which is a special ownership type that can only exist in the buildings that have an occupancy permit, are needed to be examined and depicted as three-dimensional (3D) in order to prevent misinterpretations and disputes regarding Rights, Restrictions, and Responsibilities (RRRs). This paper, therefore, aims to provide...journal article 2022
- document
- Meijers, B.M. (author), van Oosterom, P.J.M. (author) abstract 2022
- document
-
Diaz, Vitali (author), Liu, H. (author), van Oosterom, P.J.M. (author), Meijers, B.M. (author), Verbree, E. (author), Baart, F. (author), Pronk, M.J. (author), Van Lankveld, T. (author)Point cloud is made up of a multitude of three-dimensional (3D) points with one or more attributes attached. Point cloud is the third data paradigm in addition to the well-established object (vector) and gridded (raster) representations, since point cloud data can be directly collected, computed, stored, and analyzed without converting to other...conference paper 2022
- document
-
Guler, Dogus (author), Alattas, A.F.M. (author), Broekhuizen, Marjan (author), Kalogianni, E. (author), Kara, A. (author), van Oosterom, P.J.M. (author)Τhe built environment has a vast and ever-growing number of complex and multi-layered buildings and other structures. The number of those is growing because of the increasing pressure on the limited space in cities. It is important to note that different professional sectors are involved in the realization of a new building. These sectors are...conference paper 2022
- document
-
Alattas, A.F.M. (author), de Vries, M.E. (author), Meijers, B.M. (author), Zlatanova, Sisi (author), van Oosterom, P.J.M. (author)A web-based application has been developed, exploiting the integrated model of LADM andIndoorGML to provide indoor navigation based on the user's access rights in an educationalbuilding. Different types of users (students, teachers, visitors, etc.) have different access rights,which also depend on the exact time (e.g. inside or outside office...conference paper 2021
- document
-
Balado Frías, J. (author), van Oosterom, P.J.M. (author), Díaz-Vilarino, L. (author), Arias, P. (author)Although point clouds are characterized as a type of unstructured data, timestamp attribute can structure point clouds into scanlines and shape them into a time signal. The present work studies the transformation of the street point cloud into a time signal based on the Z component for the semantic segmentation using Long Short-Term Memory ...journal article 2021
- document
-
van Oosterom, P.J.M. (author), Broekhuizen, Marjan (author), Kalogianni, E. (author)The growth of cities and the pressure on land worldwide leads to more complex and multilevel structures with different space interrelations. For the registration of complex spaces mostly 2D Land Administration Systems (LAS) are used, while a representation of space in 3D could provide a clearer insight. Concurrently, technological advancements...conference paper 2021
- document
-
Ramlakhan, R.J.K. (author), Kalogianni, E. (author), van Oosterom, P.J.M. (author)Two dimensional (2D) Land Administration Systems (LASs) do not adequately represent 3D underground objects. It is not easy to identify the owners of these objects and the relations between objects below and above the surface are not explicitly provided. A 3D LAS can however facilitate a better understanding, as well as a more efficient...conference paper 2021