Benjamin Wilkinson
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View article: Counting animals in orthomosaics from aerial imagery: Challenges and future directions
Counting animals in orthomosaics from aerial imagery: Challenges and future directions Open
The use of drones to survey and monitor wildlife populations has increased exponentially. A common protocol used for data collection is planning flights with substantial overlap between successive photographs and lateral lines and then cre…
View article: The Accuracy of Remote Sensing Technologies for Tree Height Estimation: A Comparative Evaluation in Citrus Orchards
The Accuracy of Remote Sensing Technologies for Tree Height Estimation: A Comparative Evaluation in Citrus Orchards Open
View article: Mitigating Token-Level Uncertainty in Retrieval-Augmented Large Language Models
Mitigating Token-Level Uncertainty in Retrieval-Augmented Large Language Models Open
View article: The effects of Divestment from ESG Exchange Traded Funds
The effects of Divestment from ESG Exchange Traded Funds Open
View article: Automated High-Resolution Bathymetry from Sentinel-1 SAR Images in Deeper Nearshore Coastal Waters in Eastern Florida
Automated High-Resolution Bathymetry from Sentinel-1 SAR Images in Deeper Nearshore Coastal Waters in Eastern Florida Open
Synthetic aperture radar (SAR) imagers are active microwave sensors that could overcome many challenges of passive optical bathymetry inversion, yet their capacity to yield accurate high-resolution bathymetric mapping is not studied suffic…
View article: Object-Detection from Multi-View remote sensing Images: A case study of fruit and flower detection and counting on a central Florida strawberry farm
Object-Detection from Multi-View remote sensing Images: A case study of fruit and flower detection and counting on a central Florida strawberry farm Open
View article: Drone lidar-derived surface complexity metrics as indicators of intertidal oyster reef condition
Drone lidar-derived surface complexity metrics as indicators of intertidal oyster reef condition Open
Eastern oysters (Crassostrea virginica) generate structurally complex reef systems that offer diverse ecosystem services. However, there is limited understanding of how reef structure translates into reef condition. This knowledge gap migh…
View article: Accessibility of Physician Associate Studies: Student Experiences of Financial Support. A Cross-sectional Online Survey
Accessibility of Physician Associate Studies: Student Experiences of Financial Support. A Cross-sectional Online Survey Open
Background The number of Physician Associates (PAs) within the NHS workforce is rapidly rising. In other healthcare professions, researchers have highlighted the prevalence of financial barriers to careers, and the importance of widening a…
View article: A multi objective approach for creating robust flowshop schedules with buffering constraints
A multi objective approach for creating robust flowshop schedules with buffering constraints Open
This thesis develops an approach for creating optimal schedules that are robust to random changes. A Mixed Integer Programming formulation is presented, where the robustness is optimised in a multi objective approach alongside the total co…
View article: Estimating Ground Elevation in Coastal Dunes from High-Resolution UAV-LIDAR Point Clouds and Photogrammetry
Estimating Ground Elevation in Coastal Dunes from High-Resolution UAV-LIDAR Point Clouds and Photogrammetry Open
Coastal dune environments play a critical role in protecting coastal areas from damage associated with flooding and excessive erosion. Therefore, monitoring the morphology of dunes is an important coastal management operation. Traditional …
View article: The Bathy-Drone: An Autonomous Uncrewed Drone-Tethered Sonar System
The Bathy-Drone: An Autonomous Uncrewed Drone-Tethered Sonar System Open
A unique drone-based system for underwater mapping (bathymetry) was developed at the University of Florida. The system, called the “Bathy-drone”, comprises a drone that drags, via a tether, a small vessel on the water surface in a raster p…
View article: Accuracy Assessment of Low-Cost Lidar Scanners: An Analysis of the Velodyne HDL–32E and Livox Mid–40’s Temporal Stability
Accuracy Assessment of Low-Cost Lidar Scanners: An Analysis of the Velodyne HDL–32E and Livox Mid–40’s Temporal Stability Open
Identifying and mitigating sources of measurement error is a critical task in geomatics research and the geospatial industry as a whole. In pursuit of such error, accuracy assessments of lidar data have revealed a range bias in low-cost sc…
View article: The Bathy-Drone: An Autonomous Unmanned Drone-Tethered Sonar System
The Bathy-Drone: An Autonomous Unmanned Drone-Tethered Sonar System Open
A unique drone-based system for underwater mapping (bathymetry) was developed at the University of Florida. The system, called the “Bathy-drone”, comprises a drone that drags, via a tether, a small vessel on the water surface in a raster p…
View article: Deep and Machine Learning Image Classification of Coastal Wetlands Using Unpiloted Aircraft System Multispectral Images and Lidar Datasets
Deep and Machine Learning Image Classification of Coastal Wetlands Using Unpiloted Aircraft System Multispectral Images and Lidar Datasets Open
The recent developments of new deep learning architectures create opportunities to accurately classify high-resolution unoccupied aerial system (UAS) images of natural coastal systems and mandate continuous evaluation of algorithm performa…
View article: Satellite-derived bathymetry using machine learning and optimal Sentinel-2 imagery in South-West Florida coastal waters
Satellite-derived bathymetry using machine learning and optimal Sentinel-2 imagery in South-West Florida coastal waters Open
This study examines the use of the Multi-Spectral Instrument (MSI) in Sentinel-2 satellite in combination with regression-based random forest models to estimate bathymetry along the extended southwestern Florida nearshore region. In this s…
View article: Beyond Hydrography - Marine Geomatics at the University of Florida
Beyond Hydrography - Marine Geomatics at the University of Florida Open
Florida depends on the oceans, yet its waters have not been extensively mapped to the highest standards. While there is a need for marine spatial data for a wide range of applications and issues, there is also a need to develop data acquis…
View article: Patients Perceptions of Artificial Intelligence in Diabetic Eye Screening
Patients Perceptions of Artificial Intelligence in Diabetic Eye Screening Open
There is low awareness of clinical AI applications among our participants. Despite this, most are receptive toward the implementation of AI in diabetic eye screening. Overall, there was a strong preference toward continual involvement of c…
View article: Using UAS-based LiDAR data to quantify oyster reef structural characteristics for temporal monitoring
Using UAS-based LiDAR data to quantify oyster reef structural characteristics for temporal monitoring Open
<p>Given the global decline in oyster reef coverage, conservation and restoration efforts are increasingly needed to maintain the ecosystem services these biogenic features offer. However, monitoring and restoration are constrained b…
View article: Bathymetry inversion with optimal Sentinel-2 imagery using random forest modeling
Bathymetry inversion with optimal Sentinel-2 imagery using random forest modeling Open
<p>Bathymetry inversion using remote sensing techniques is a topic of increasing interest in coastal management and monitoring. Freely accessible Sentinel-2 imagery offers high-resolution multispectral data that enables bathymetry in…
View article: <scp>treetop</scp> : A Shiny‐based application and R package for extracting forest information from <scp>LiDAR</scp> data for ecologists and conservationists
<span>treetop</span> : A Shiny‐based application and R package for extracting forest information from <span>LiDAR</span> data for ecologists and conservationists Open
Individual tree detection (ITD) and crown delineation are two of the most relevant methods for extracting detailed and reliable forest information from LiDAR (Light Detection and Ranging) datasets. However, advanced computational skills an…
View article: Radiative Transfer Image Simulation Using L-System Modeled Strawberry Canopies
Radiative Transfer Image Simulation Using L-System Modeled Strawberry Canopies Open
The image-based modeling and simulation of plant growth have numerous and diverse applications. In this study, we used image-based and manual field measurements to develop and validate a methodology to simulate strawberry (Fragaria × anana…
View article: Estimating Ground Elevation and Vegetation Characteristics in Coastal Salt Marshes Using UAV-Based LiDAR and Digital Aerial Photogrammetry
Estimating Ground Elevation and Vegetation Characteristics in Coastal Salt Marshes Using UAV-Based LiDAR and Digital Aerial Photogrammetry Open
This study evaluates the skills of two types of drone-based point clouds, derived from LiDAR and photogrammetric techniques, in estimating ground elevation, vegetation height, and vegetation density on a highly vegetated salt marsh. The pr…
View article: ABSOLUTE 3D ACCURACY ASSESSMENT OF UAS LIDAR SURVEYING
ABSOLUTE 3D ACCURACY ASSESSMENT OF UAS LIDAR SURVEYING Open
Surveying an area with small, unoccupied aerial systems (UAS) equipped with a lidar mapping payload—absent permanent, stable, geometrical reference surfaces—demands accurate, repeatable data collection procedures. While relative error with…
View article: Investigating Practical Impacts of Using Single-Antenna and Dual-Antenna GNSS/INS Sensors in UAS-Lidar Applications
Investigating Practical Impacts of Using Single-Antenna and Dual-Antenna GNSS/INS Sensors in UAS-Lidar Applications Open
Data collected from a moving lidar sensor can produce an accurate digital representation of the physical environment that is scanned, provided the time-dependent positions and orientations of the lidar sensor can be determined. The most wi…
View article: A Rigorous Observation Model for the Risley Prism-Based Livox Mid-40 Lidar Sensor
A Rigorous Observation Model for the Risley Prism-Based Livox Mid-40 Lidar Sensor Open
Modern lidar sensors are continuing to decrease in size, weight, and cost, but the demand for fast, abundant, and high-accuracy lidar observations is only increasing. The Livox Mid-40 lidar sensor was designed for use within sense-and-avoi…
View article: Comparing High-Resolution Satellite and GatorEye UAV Lidar Data for Trail Mapping in Mixed Pine and Oak Forests in Central Florida Using a Participatory Approach
Comparing High-Resolution Satellite and GatorEye UAV Lidar Data for Trail Mapping in Mixed Pine and Oak Forests in Central Florida Using a Participatory Approach Open
Trail detection in mixed canopy ecosystems has important implications for forest management, monitoring, and conservation, although active sensor technology for sub-canopy trail detection is still developing. In order to assess the effecti…
View article: Moving to Automated Tree Inventory: Comparison of UAS-Derived Lidar and Photogrammetric Data with Manual Ground Estimates
Moving to Automated Tree Inventory: Comparison of UAS-Derived Lidar and Photogrammetric Data with Manual Ground Estimates Open
Unmanned aircraft systems (UAS) have advanced rapidly enabling low-cost capture of high-resolution images with cameras, from which three-dimensional photogrammetric point clouds can be derived. More recently UAS equipped with laser scanner…
View article: Scan Pattern Characterization of Velodyne VLP-16 Lidar Sensor for UAS Laser Scanning
Scan Pattern Characterization of Velodyne VLP-16 Lidar Sensor for UAS Laser Scanning Open
Many lightweight lidar sensors employed for UAS lidar mapping feature a fan-style laser emitter-detector configuration which results in a non-uniform pattern of laser pulse returns. As the role of UAS lidar mapping grows in both research a…
View article: Single-Pass UAV-Borne GatorEye LiDAR Sampling as a Rapid Assessment Method for Surveying Forest Structure
Single-Pass UAV-Borne GatorEye LiDAR Sampling as a Rapid Assessment Method for Surveying Forest Structure Open
Unmanned aerial vehicles (UAV) allow efficient acquisition of forest data at very high resolution at relatively low cost, making it useful for multi-temporal assessment of detailed tree crowns and forest structure. Single-pass flight plans…
View article: Automated Canopy Delineation and Size Metrics Extraction for Strawberry Dry Weight Modeling Using Raster Analysis of High-Resolution Imagery
Automated Canopy Delineation and Size Metrics Extraction for Strawberry Dry Weight Modeling Using Raster Analysis of High-Resolution Imagery Open
Capturing high spatial resolution imagery is becoming a standard operation in many agricultural applications. The increased capacity for image capture necessitates corresponding advances in analysis algorithms. This study introduces automa…