Browsing Geography and Environmental Management by Supervisor "Li, Jonathan"
Now showing items 1-20 of 25
-
Automated Extraction of 3D Building Windows from Mobile LiDAR Data
(University of Waterloo, 2016-03-28)The three-dimensional (3D) city models have gained more and more attentions because of their considerable potential applications at present. In particular, the demands for Level of Detail (LoD) building models become urgent. ... -
Building Detection from Very High Resolution Remotely Sensed Imagery Using Deep Neural Networks
(University of Waterloo, 2019-04-30)The past decades have witnessed a significant change in human societies with a fast pace and rapid urbanization. The boom of urbanization is contributed by the influx of people to the urban area and comes with building ... -
Characterization of Surface Urban Heat Island in the Greater Toronto Area Using Thermal Infrared Satellite Imagery
(University of Waterloo, 2016-01-08)For the past decades, there have been increasing concerns about urban environmental degradation, especially under the circumstance of urbanization. This thesis compares the trends between air temperature and surface ... -
Convolutional Neural Networks for Land-cover Classification Using Multispectral Airborne Laser Scanning Data
(University of Waterloo, 2018-09-21)With the spread of urban culture, urbanisation is progressing rapidly and globally. Accurate and update land cover (LC) information becomes increasingly critical for protecting ecosystems, climate change studies and ... -
Deep Learning for 3D Information Extraction from Indoor and Outdoor Point Clouds
(University of Waterloo, 2021-01-07)This thesis focuses on the challenges and opportunities that come with deep learning in the extraction of 3D information from point clouds. To achieve this, 3D information such as point-based or object-based attributes ... -
Estimating PM2.5 Concentrations Using 3 KM MODIS AOD Products: A Case Study in British Columbia, Canada
(University of Waterloo, 2019-04-30)PM2.5 refers to fine particles with diameters smaller than 2.5 μm. The rising level of PM2.5 reveals adverse effects on climate change, economic losses, international conflicts, and public health. Exposure to the high level ... -
Estimating PM2.5 in the Beijing-Tianjin-Hebei Region Using MODIS AOD Products from 2014 to 2015
(University of Waterloo, 2016-05-17)Fine particulate matter with a diameter less than 2.5 μm (PM2.5) has harmful impacts on regional climate, economic development and public health. The high PM2.5 concentrations in China’s urban areas are mainly caused by ... -
Estimation of Carbon Storage in Urban Trees Using Multispectral Airborne Laser Scanning Data
(University of Waterloo, 2016-05-19)With the continued growth of global population, urbanization becomes an inevitable trend. As substantial urban expansion undergoes, ecosystem and global land cover have been altered consequently. Urban development becomes ... -
Extraction of Digital Terrain Models from Airborne Laser Scanning Data based on Transfer-Learning
(University of Waterloo, 2019-04-30)With the rapid urbanization, timely and comprehensive urban thematic and topographic information is highly needed. Digital Terrain Models (DTMs), as one of unique urban topographic information, directly affect subsequent ... -
Generation of Horizontally Curved Driving Lines for Autonomous Vehicles Using Mobile Laser Scanning Data
(University of Waterloo, 2017-08-24)The development of autonomous vehicle desiderates tremendous advances in three-dimensional (3D) high-definition roadmaps. These roadmaps are capable of providing 3D positioning information with 10-to-20 cm accuracy. With ... -
Integration of Satellite Data, Physically-based Model, and Deep Neural Networks for Historical Terrestrial Water Storage Reconstruction
(University of Waterloo, 2021-04-08)Terrestrial water storage (TWS) is an essential part of the global water cycle. Long-term monitoring of observed and modeled TWS is fundamental to analyze droughts, floods, and other meteorological extreme events caused ... -
Investigating the Influences of Tree Coverage and Road Network Density on Property Crime: A Case Study in the City of Vancouver, British Columbia, Canada
(University of Waterloo, 2016-05-18)With the development of Geographic Information Systems (GIS), crime mapping becomes an effective approach to investigate the spatial pattern of crime in a defined area. Understanding the relationship between crime and its ... -
Land Disturbance Extraction in Alberta Oil Sands Satellite Imagery
(University of Waterloo, 2021-12-10)Tracking and mapping land disturbances from oil and gas development are critical to environmental assessments and land reclamation. Manual extraction of land disturbances is costly, time-consuming, and requires updating ... -
Landslide Geoanalytics Using LiDAR-derived Digital Elevation Models
(University of Waterloo, 2018-01-24)Landslides are natural hazards that contribute to tremendous economic loss and result in fatalities if there is no well-prepared mitigation and planning. Assessing landslide hazard and optimizing quality to improve ... -
Mining Geotagged Tweets: Tracking Spatiotemporal Variation of Mental Health in Canada during COVID-19 Pandemic
(University of Waterloo, 2023-05-29)This thesis explores and analyzes the evolution of the pandemic as a stressor on mental health in Canada through monitoring the sentiment polarity dynamics, emotion trends, and changes in keywords being discussed on Twitter, ... -
Rapid Inspection of Pavement Markings Using Mobile Laser Scanning Point Clouds
(University of Waterloo, 2016-03-28)Intelligent Transportation System (ITS) is the combination of information technology, sensors and communications for more efficient, safer, more secure and more eco-friendly surface transport. One of the most viable forms ... -
Recognizing Features in Mobile Laser Scanning Point Clouds Towards 3D High-definition Road Maps for Autonomous Vehicles
(University of Waterloo, 2017-08-29)The sensors mounted on a driverless vehicle are not always reliable for precise localization and navigation. By comparing the real-time sensory data with a priori map, the autonomous navigation system can transform the ... -
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 ...