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2,773 Results Found

  • Feature Paper
  • Article
  • Open Access
3,023 Views
20 Pages

17 February 2024

Statistical depth is widely used as a powerful tool to measure the center-outward rank of multivariate and functional data. Recent studies have introduced the notion of depth to the temporal point process, which exhibits randomness in the cardinality...

(This article belongs to the Section D1: Probability and Statistics)
  • Article
  • Open Access
1 Citations
2,393 Views
22 Pages

Bayesian Modeling for Nonstationary Spatial Point Process via Spatial Deformations

  • Dani Gamerman,
  • Marcel de Souza Borges Quintana and
  • Mariane Branco Alves

11 August 2024

Many techniques have been proposed to model space-varying observation processes with a nonstationary spatial covariance structure and/or anisotropy, usually on a geostatistical framework. Nevertheless, there is an increasing interest in point process...

(This article belongs to the Special Issue Bayesianism)
  • Article
  • Open Access
16 Citations
5,075 Views
15 Pages

27 April 2018

The spatial structure of trees is a template for forest dynamics and the outcome of a variety of processes in ecosystems. Identifying the contribution and magnitude of the different drivers is an age-old task in plant ecology. Recently, the modelling...

(This article belongs to the Special Issue Old Growth Temperate and Boreal Forests: Processes, Functions, and Dynamics)
  • Article
  • Open Access
2,536 Views
7 Pages

14 September 2022

Spatial statistics is a powerful tool for analyzing data that are illustrated as points or positions in a regular or non-regular state space. Techniques that are proposed to investigate the spatial association between neighboring positions are based...

  • Article
  • Open Access
1 Citations
1,169 Views
22 Pages

We investigate the Optimal Obstacle Placement (OOP) problem under uncertainty, framed as the dual of the Optimal Traversal Path problem in the Stochastic Obstacle Scene paradigm. We consider both continuous domains, discretized for analysis, and alre...

  • Article
  • Open Access
27 Citations
8,753 Views
26 Pages

10 January 2024

Using spatial data in mobile applications has grown significantly, thereby empowering users to explore locations, navigate unfamiliar areas, find transportation routes, employ geomarketing strategies, and model environmental factors. Spatial database...

(This article belongs to the Section Evolutionary Algorithms and Machine Learning)
  • Communication
  • Open Access
2 Citations
2,039 Views
12 Pages

Analysing Pine Disease Spread Using Random Point Process by Remote Sensing of a Forest Stand

  • Rostyslav Kosarevych,
  • Izabela Jonek-Kowalska,
  • Bohdan Rusyn,
  • Anatoliy Sachenko and
  • Oleksiy Lutsyk

9 August 2023

The application of a process model to investigate pine tree infestation caused by bark beetles is discussed. The analysis of this disease was carried out using spatial and spatio−temporal models of random point patterns. Spatial point patterns...

(This article belongs to the Special Issue Remote Sensing Applications for Forest Ecosystem Monitoring and Spatial Modeling)
  • Article
  • Open Access
86 Citations
22,232 Views
28 Pages

Georeferenced Point Clouds: A Survey of Features and Point Cloud Management

  • Johannes Otepka,
  • Sajid Ghuffar,
  • Christoph Waldhauser,
  • Ronald Hochreiter and
  • Norbert Pfeifer

25 October 2013

This paper presents a survey of georeferenced point clouds. Concentration is, on the one hand, put on features, which originate in the measurement process themselves, and features derived by processing the point cloud. On the other hand, approaches f...

  • Article
  • Open Access
4 Citations
3,155 Views
20 Pages

Modelling the Spatial Structure of White Spruce Plantations and Their Changes after Various Thinning Treatments

  • Emmanuel Duchateau,
  • Robert Schneider,
  • Stéphane Tremblay,
  • Laurie Dupont-Leduc and
  • Hans Pretzsch

4 June 2021

Research Highlights: The spatial distribution of trees results from several ecological processes that can be difficult to measure. We applied a point process modelling approach that uses the diameter and species of neighbouring trees to represent int...

(This article belongs to the Special Issue Modeling Forest Stand Dynamics, Growth and Yield)
  • Article
  • Open Access
228 Views
25 Pages

10 October 2026

Real-time reconstruction of virtual scenes in response to changing physical conditions remains a challenge in manufacturing digital-twin systems. During manufacturing operations, changes in object positions, orientations, and spatial arrangements req...

(This article belongs to the Topic State-of-the-Art Object Detection, Tracking, and Recognition Techniques)
  • Article
  • Open Access
13 Citations
7,459 Views
26 Pages

In this paper, we analyze the tornado occurrences in the Unites States. To perform inference procedures for the spatio-temporal point process we adopt a dynamic representation of Log-Gaussian Cox Process. This representation is based on the decomposi...

(This article belongs to the Collection Econometric Analysis of Climate Change)
  • Article
  • Open Access
3,876 Views
19 Pages

20 September 2023

Updating the most recent set of point cloud data is critical in autonomous driving environments. However, existing systems for point cloud data management often fail to ensure real-time updates or encounter situations in which data cannot be effectiv...

(This article belongs to the Special Issue Autonomous Vehicles Technological Trends, 2nd Edition)
  • Article
  • Open Access
3 Citations
3,525 Views
16 Pages

The decomposition of a point process is useful for the analysis of spatial patterns and in the discovery of potential mechanisms of geographic phenomena. However, when a local repulsive cluster is present in a complex heterogeneous point process, the...

  • Article
  • Open Access
15 Citations
5,298 Views
15 Pages

Volunteer-contributed geographic data (VGI) is an important source of geospatial big data that support research and applications. A major concern on VGI data quality is that the underlying observation processes are inherently biased. Detecting observ...

(This article belongs to the Special Issue Mapping, Modeling and Prediction with VGI)
  • Article
  • Open Access
297 Views
23 Pages

Digital histology of human postmortem brain tissue is fundamental to understanding neurodegeneration, yet resolving the spatial organisation of neuroinflammatory markers remains challenging because manual scoring and scalar summaries capture only par...

(This article belongs to the Special Issue Beyond Diagnosis: Machine Learning in Prognosis, Prevention, Healthcare, Neurosciences, and Precision Medicine)
  • Article
  • Open Access
20 Citations
6,602 Views
25 Pages

Landscape archaeology has a long history of using predictive models to improve our knowledge of extant archaeological features around the world. Important advancements in spatial statistics, however, have been slow to enter archaeological predictive...

(This article belongs to the Special Issue Satellite, Aerial and Ground-Based Remote Sensing for Archaeological and Heritage Research)
  • Article
  • Open Access
6 Citations
4,700 Views
15 Pages

Spatial Segregation Facilitates the Coexistence of Tree Species in Temperate Forests

  • Peijian Shi,
  • Jie Gao,
  • Zhaopeng Song,
  • Yanhong Liu and
  • Cang Hui

13 December 2018

Competition between plants has an important role during the natural succession of forest communities. Niche separation between plants can reduce such interspecific competition and enable multispecies plant to achieve coexistence, although this propos...

(This article belongs to the Section Forest Ecology and Management)
  • Article
  • Open Access
2 Citations
2,787 Views
13 Pages

14 January 2025

Background/Objectives: Predicting the behavior of clear cell renal cell carcinoma (ccRCC) is challenging using standard-of-care histopathologic examination. Indeed, pathologic RCC tumor grading, based on nuclear morphology, performs poorly in predict...

(This article belongs to the Section Cancer Metastasis)
  • Article
  • Open Access
20 Citations
3,526 Views
13 Pages

Fusing Sentinel-2 Imagery and ALS Point Clouds for Defining LULC Changes on Reclaimed Areas by Afforestation

  • Marta Szostak,
  • Kacper Knapik,
  • Piotr Wężyk,
  • Justyna Likus-Cieślik and
  • Marcin Pietrzykowski

27 February 2019

The study was performed on two former sulphur mines located in Southeast Poland: Jeziórko, where 216.5 ha of afforested area was reclaimed after borehole exploitation and Machów, where 871.7 ha of dump area was reclaimed after open cast strip mining....

(This article belongs to the Section Environmental Sustainability and Applications)
  • Article
  • Open Access
2,003 Views
26 Pages

8 June 2025

This study evaluates coordinate consistency in the static Korean Geodetic Datum 2002 (KGD2002) by comparing GNSS station positions derived independently from GAMIT/GLOBK and Bernese software. Using a nationwide network of approximately 3000 unified g...

(This article belongs to the Section Earth Sciences)
  • Article
  • Open Access
2 Citations
1,957 Views
20 Pages

14 February 2025

In smart ports, accurately perceiving the motion state of a ship during berthing and unberthing is essential for the safety and efficiency of the ship and port. However, in actual scenarios, the obtained data are not always complete, which impacts th...

(This article belongs to the Section Ocean Engineering)
  • Article
  • Open Access
3 Citations
2,756 Views
13 Pages

3 March 2021

Cox processes, also called doubly stochastic Poisson processes, are used for describing phenomena for which overdispersion exists, as well as Poisson properties conditional on environmental effects. In this paper, we consider situations where spatial...

(This article belongs to the Special Issue Advances in Applications of Probability Theory and Stochastic Processes)
  • Article
  • Open Access
10 Citations
3,869 Views
19 Pages

Lidar can effectively obtain three-dimensional information on ground objects. In recent years, lidar has developed rapidly from single-wavelength to multispectral hyperspectral imaging. The multispectral airborne lidar Optech Titan is the first comme...

(This article belongs to the Special Issue Geomatics in Forestry and Agriculture: New Advances and Perspectives)
  • Article
  • Open Access
26 Citations
9,033 Views
22 Pages

Characterizing the Pixel Footprint of Satellite Albedo Products Derived from MODIS Reflectance in the Heihe River Basin, China

  • Jingjing Peng,
  • Qiang Liu,
  • Lizhao Wang,
  • Qinhuo Liu,
  • Wenjie Fan,
  • Meng Lu and
  • Jianguang Wen

28 May 2015

The adjacency effect and non-uniform responses complicate the precise delimitation of the surface support of remote sensing data and their derived products. Thus, modeling spatial response characteristics (SRCs) prior to using remote sensing informat...

(This article belongs to the Special Issue The Development and Validation of Remote Sensing Products for Terrestrial, Hydrological, and Ecological Applications at the Regional Scale)
  • Article
  • Open Access
4 Citations
3,580 Views
20 Pages

24 November 2019

Estimating underlying mechanisms and dynamics from observed tree patterns can provide guidance for plantation management. Robinia pseudoacacia can reproduce via clonally produced ramets, leading to a complex distribution of stems. Three second genera...

(This article belongs to the Section Forest Ecology and Management)
  • Article
  • Open Access
1 Citations
2,259 Views
16 Pages

21 October 2024

Traffic crashes have become one of the key public health issues, triggering significant apprehension among citizens and urban authorities. However, prior studies have often been limited by their inability to fully capture the dynamic and complex natu...

(This article belongs to the Section Sustainable Transportation)
  • Article
  • Open Access
9 Citations
4,021 Views
29 Pages

18 December 2019

This study seeks a scientific methodology for ecological leisure industry planners to contribute to a more ecologically friendly leisure industry. This study creates an environment suitability model (LIDES) for leisure industry development. This mode...

  • Article
  • Open Access
142 Views
31 Pages

12 October 2026

Accurate and thorough detection of rock mass discontinuities is essential in geotechnical engineering as they have a significant impact on the stability of underground and surface excavations, yet they are difficult to automate. In the work reported...

(This article belongs to the Section Remote Sensing in Geology, Geomorphology and Hydrology)
  • Article
  • Open Access
4 Citations
3,647 Views
22 Pages

Accurately extracting semantic features of urban functional zones is crucial for understanding urban functional zone types and urban functional spatial structures. Points of interest provide comprehensive information for extracting the semantic featu...

(This article belongs to the Special Issue Application of Geographical Information System in Urban Design, Management or Evaluation)
  • Article
  • Open Access
3 Citations
3,399 Views
13 Pages

A Homogeneity Test for Comparing Gridded-Spatial-Point Patterns of Human Caused Fires

  • M. Virtudes Alba-Fernández and
  • Francisco Javier Ariza-López

27 July 2018

The statistical evaluation of the spatial similarity of human caused fire patterns is an important issue for wildland fire analysis. This paper proposes a method based on observed data and on a statistical tool (homogeneity test) that is based on non...

(This article belongs to the Section Forest Ecology and Management)
  • Article
  • Open Access
5 Citations
4,339 Views
20 Pages

Maps at different scales have different emphases on the information representation of point data. With a focus on large scales, this paper proposes an improved sequential displacement method. While existing approaches mostly use a fixed order to plac...

  • Article
  • Open Access
3 Citations
2,944 Views
21 Pages

Point cloud analyzing and processing have attracted extensive attention due to their broad application in numerous sectors. Although many previous deep learning-based frameworks have had significant improvement, they often struggle with processing ef...

(This article belongs to the Section Artificial Intelligence)
  • Article
  • Open Access
3 Citations
3,159 Views
31 Pages

Spatial Warped Gaussian Processes: Estimation and Efficient Field Reconstruction

  • Gareth W. Peters,
  • Ido Nevat,
  • Sai Ganesh Nagarajan and
  • Tomoko Matsui

11 October 2021

A class of models for non-Gaussian spatial random fields is explored for spatial field reconstruction in environmental and sensor network monitoring. The family of models explored utilises a class of transformation functions known as Tukey g-and-h tr...

(This article belongs to the Special Issue Spatial–Temporal Data Analysis and Its Applications)
  • Article
  • Open Access
1 Citations
441 Views
23 Pages

20 July 2026

Geospatial Artificial Intelligence (GeoAI) and the rapid advancement of 3D data acquisition technologies (e.g., LiDAR) have enabled scalable semantic interpretation of georeferenced large-scale 3D point clouds across different applications. 3D deep l...

  • Article
  • Open Access
4 Citations
2,090 Views
22 Pages

To accurately assess students’ cognitive state of knowledge points in the learning process within the smart classroom, a knowledge tracing (KT) model based on classroom network characteristic learning engagement and temporal-spatial feature fus...

  • Article
  • Open Access
3 Citations
1,224 Views
41 Pages

A Combined Hydrogeophysical System for Soil Column Experiments Using Time Domain Reflectometry and Ground-Penetrating Radar

  • Alexandros Papadopoulos,
  • George Apostolopoulos,
  • Petros Kofakis,
  • Ioannis Argyrokastritis,
  • Margarita Tsaniklidou and
  • Andreas Kallioras

3 July 2025

To further comprehend kinetic processes in the unsaturated zone, a series of soil column experiments was conducted to simulate downward and upward water movement under variable saturation conditions. High-accuracy spatial and temporal measurements we...

(This article belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
  • Article
  • Open Access
15 Citations
5,408 Views
17 Pages

19 July 2023

As sustainable structures like steel structures become more widely used, so do their construction issues. Improper lifting measures of long-span spatial steel structures may delay the construction period and even cause safety accidents. These problem...

(This article belongs to the Special Issue Building Information Modeling (BIM) in the Perspective of Green Building)
  • Article
  • Open Access
467 Views
17 Pages

Point Cloud-Based Weld Seam Recognition and Localization for Robotic Welding

  • Xiang-Lei Meng,
  • Ling-Hui Ni,
  • Hao-Tian Shi,
  • Hui-Chuan Lin,
  • Zhi-Min He,
  • Jun Zeng and
  • Yan Li

7 September 2026

The identification and spatial positioning of welds are key links in welding process matching and automatic welding path planning. Therefore, achieving automatic recognition and spatial positioning of weld point cloud features under online scanning i...

  • Article
  • Open Access
29 Citations
5,154 Views
17 Pages

Basic Properties of High-Dynamic Beam Shaping with Coherent Combining of High-Power Laser Beams for Materials Processing

  • Rudolf Weber,
  • Jonas Wagner,
  • Alexander Peter,
  • Christian Hagenlocher,
  • Ami Spira,
  • Benayahu Urbach,
  • Eyal Shekel and
  • Yaniv Vidne

Lasers with average powers of several kilowatts have become an important tool for industrial applications. Temporal and spatial beam shaping was demonstrated to improve existing and enable novel applications. A very promising technology for both high...

  • Article
  • Open Access
9 Citations
2,168 Views
12 Pages

12 October 2023

Deformation can effectively reflect the structural state of concrete dams and, thus, establishing na accurate concrete dam deformation prediction model is important for dam health monitoring and early warning strategies. To address the problem that t...

(This article belongs to the Special Issue Structural Health Monitoring for Concrete Dam)
  • Article
  • Open Access
11 Citations
4,848 Views
15 Pages

Geographically neural network weighted regression is an improved model of GWR combined with a neural network. It has a stronger ability to fit nonlinear functions, and complex geographical processes can be modeled more fully. GNNWR uses the distance...

(This article belongs to the Special Issue GIS Software and Engineering for Big Data)
  • Letter
  • Open Access
13 Citations
5,582 Views
11 Pages

19 April 2019

Point clouds obtained from laser scanning techniques are now a standard type of spatial data for characterising terrain surfaces. Some have been shared as open data for free access. A problem with the use of these free point cloud data is that the da...

  • Article
  • Open Access
3 Citations
843 Views
31 Pages

Inversion of ϕ-OTDR Spatial Windowing Effects Using Wiener Deconvolution for Improved Acoustic Wavefield Reconstruction

  • Shangming Du,
  • Tianwei Chen,
  • Yuxing Duan,
  • Ke Jiang,
  • Song Wu,
  • Can Guo and
  • Lei Liang

8 March 2026

The spatial response of rectangular pulse heterodyne phase-sensitive optical time-domain reflectometry (ϕ-OTDR) to an acoustic event is characterized by a windowing function rather than a point-like sensitivity. This effect degrades the system&r...

(This article belongs to the Special Issue Distributed Sensors: Development and Applications)
  • Article
  • Open Access
1,765 Views
11 Pages

In the application domain of large-scale high-precision measurement systems, accurately calibrating the precision of point position measurements is a pivotal issue. Traditional calibration methods rely on laser interferometers and high-precision disp...

(This article belongs to the Section Optoelectronics)
  • Article
  • Open Access
3 Citations
5,324 Views
17 Pages

16 October 2015

This study proposes a local edge matching method with a sequence alignment technique for adjacent spatial datasets. By assuming that the common boundary edges of the datasets are point strings, the proposed method obtains the sequence for point edit...

  • Article
  • Open Access

21 October 2026

This paper proposes a simulation-driven data processing framework that transforms multiphysics simulation outputs into interactive representations suitable for immersive scientific visualization and analysis. The proposed workflow uses Comsol Multiph...

(This article belongs to the Special Issue Advances in Human–Computer Interaction and Intelligent Interface Design)
  • Article
  • Open Access
1 Citations
3,564 Views
20 Pages

The study of convolutional neural networks for 3D point clouds is becoming increasingly popular, and the difficulty lies mainly in the disorder and irregularity of point clouds. At present, it is straightforward to propose a convolution operation and...

  • Article
  • Open Access
6 Citations
2,495 Views
17 Pages

Improved Landslide Deformation Prediction Using Convolutional Neural Network–Gated Recurrent Unit and Spatial–Temporal Data

  • Honglei Yang,
  • Youfeng Liu,
  • Qing Han,
  • Linlin Xu,
  • Tengjun Zhang,
  • Zeping Wang,
  • Ao Yan,
  • Songxue Zhao,
  • Jianfeng Han and
  • Yuedong Wang

19 February 2025

As one of the major forms of geological disaster, landslides cause huge casualties and economic losses in China every year. Given the importance of landslide prediction, it is a challenging task due to difficulties in efficiently leveraging the spati...

  • Article
  • Open Access
17 Citations
5,402 Views
22 Pages

An Integrated Algorithm for Extracting Terrain Feature-Point Clusters Based on DEM Data

  • Jinlong Hu,
  • Mingliang Luo,
  • Leichao Bai,
  • Jinliang Duan and
  • Bing Yu

9 June 2022

Terrain feature points, such as the peaks and saddles, are the basic framework of surface topography and its undulations, which significantly affect the spatial distribution of surface topography. In the past, terrain feature points were extracted se...

(This article belongs to the Special Issue Quantifying Geomorphological Processes Using Remote Sensing Techniques)
  • Article
  • Open Access
7 Citations
5,384 Views
24 Pages

28 December 2022

The digital orthophoto is an image with both map geometric accuracy and image characteristics, which is commonly used in geographic information systems (GIS) as a background image. Existing methods for digital orthophoto generation are generally base...

(This article belongs to the Special Issue Techniques and Applications of UAV-Based Photogrammetric 3D Mapping II)

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