Browsing Theses by Supervisor "Li, Jonathan"
Now showing items 21-30 of 30
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Road Information Extraction from Mobile LiDAR Point Clouds using Deep Neural Networks
(University of Waterloo, 2020-08-17)Urban roads, as one of the essential transportation infrastructures, provide considerable motivations for rapid urban sprawl and bring notable economic and social benefits. Accurate and efficient extraction of road information ... -
Satellite-based PM2.5 Exposure Estimation and Health Impacts over China
(University of Waterloo, 2020-08-27)Exposure to suspended fine particulate matter (PM2.5) has been proven to adversely impact public health through increased risk of cardiovascular and respiratory mortality. Assessing health impacts of PM2.5 and its long-term ... -
Sea Ice Mapping in Labrador Coast with Sentinel-1 Synthetic Aperture Radar Imagery
(University of Waterloo, 2017-01-24)Sea ice mapping is crucial to Canadian coast, including marine transportation, environmental protection, resource management, disaster and emergency management, especially under current background of climate change. Canadian ... -
Semantic Modelling of an Indoor Parking Garage Using Hand-held GeoSLAM LiDAR Point Clouds
(University of Waterloo, 2024-01-26)The development of high-definition (HD) digital twin models for underground parking lots presents significant challenges due to the absence of signals from satellite navigation systems, fluctuating lighting conditions, and ... -
Semi-automated Generation of High-accuracy Digital Terrain Models along Roads Using Mobile Laser Scanning Data
(University of Waterloo, 2016-02-19)Transportation agencies in many countries require high-accuracy (2-20 cm) digital terrain models (DTMs) along roads for various transportation related applications. Compared to traditional ground surveys and aerial ... -
Semi-automated Generation of Road Transition Lines Using Mobile Laser Scanning Data
(University of Waterloo, 2017-09-18)Recent advances in autonomous vehicles (AVs) are exponential. Prominent car manufacturers, academic institutions, and corresponding governmental departments around the world are taking active roles in the AV industry. ... -
Spatiotemporal Analysis of Human Mobility based on Land Use Types in the Greater Toronto Area during COVID-19 Pandemic
(University of Waterloo, 2023-05-26)The 2019 Coronavirus disease COVID-19 is an infectious respiratory disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It undoubtedly poses a huge challenge in terms of public health and social ... -
Spectral-Spatial Neural Networks and Probabilistic Graph Models for Hyperspectral Image Classification
(University of Waterloo, 2019-08-16)Pixel-wise hyperspectral image (HSI) classification has been actively studied since it shares similar characteristics with related computer vision tasks, including image classification, object detection, and semantic ... -
Upsampling Indoor LiDAR Point Clouds for Object Detection
(University of Waterloo, 2023-05-24)As an emerging technology, LiDAR point cloud has been applied in a wide range of fields. With the ability to recognize and localize the objects in a scene, point cloud object detection has numerous applications. However, ... -
Urban Roadside Tree Inventory Using a Mobile Laser Scanning System
(University of Waterloo, 2016-10-11)the road environment. Thus, effective methods are needed for the MLS data processing. The main goal of this thesis is to establish a feasible workflow by testing a series of methods to extract geometrical information of ...