Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Thermal Imagery"”.
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Identification of Disease Stress in Turfgrass Canopies Using Thermal Imagery and Automated Aerial Image Analysis
… and isolating turfgrass diseases. First, thermal imagery is used to detect differences in canopy temperature associated with the onset of brown patch infection in tall fescue. Sixty-four newly seeded stands of tall fescue were arranged in a randomized block design with two runs with eight …
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Quantifying groundwater discharge using thermal imagery and conventional groundwater exploration techniques for estimating the nitrogen loading to a meso-scale inland estuary
… independently by two methods: one, used thermal imagery, and the other, piezometric mapping. The thermal imagery method assessed groundwater that was observed to discharge within the intertidal zone of an inland estuary. The groundwater piezometric mapping method used the monitoring wells …
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Eustressed or Distressed? Combining Physiology with Observation in Stress Studies
… as a perspiratory signal extracted from thermal imagery of the perinasal area. The observational channel is materialized via decoding of facial expressions. Decoding is usually performed in the visible spectrum, however I have developed an algorithm to carry this out using thermal imagery …
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Optimizing Bermudagrass Management Strategies Using Aerial Imagery and Wireless Capacitive Soil Sensors
… subsequent removal on remotely sensed visible imagery for creeping bentgrass and HBG. The data suggests that leaf wetness minimally influences drone-derived green to red ratio index data while maintaining a moderate correlation with soil water content (r² = 0.48. The second study evaluates the …
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Investigating changes of summer urban heat island in Kansas City from 2000 to 2023 with remote sensing
… or heat. This excess temperature is visible in thermal imagery that is collected by satellites such as the MODIS and Landsat platforms. These satellites were not always available, and the datasets obtained from them only go back around 30-40 years and reliable thermal imagery has only been …
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System design of an unmanned aerial vehicle (UAV) for marine environmental sensing
… such phenomena: Harmful Algal Blooms (HABs) and thermal plumes. A complete field-operable system was developed to identify and characterize HAB events through a human-monitored supervisory control system. This capability was extended with an infrared imaging camera for remote sensing of thermal …
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Advancing Soil Moisture Mapping with Multi-Modal Drone Sensing and AI: Integrating GPR, Hyperspectral, and Thermal Imaging for Precision Agriculture
… multiple sensors, including hyperspectral, RGB-thermal, and Ground Penetrating Radar (GPR), to improve depth-specific soil moisture estimation in cornfields. By combining surface, canopy, and subsurface information, this research aimed to capture a more complete picture of soil moisture dynamics …
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Water and Energy Budgets of Snow-Covered Montane Forests: Observations, Remote Sensing, and Modeling
… we explore the accuracy of remote sensing-based thermal imagery, and two source energy balance modeling to estimate evapotranspiration variations in a montane site. We show that remote sensing-derived ET may struggle to characterize ET in montane forests.
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Negotiating the Panoptic Gaze: People, Power and Conservation Surveillance in the Corbett Tiger Reserve
… the use of drones, camera traps, satellite, and thermal imagery for activities such as wildlife monitoring, anti-poaching, and law enforcement. In many respects surveillance is constitutive of modern society, especially in urban spaces (Lyon 1995) where its use has been widely discussed. In the …
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An investigation into using stable water isotopes to determine the dependency of vegetation on groundwater at Cape Point Nature Reserve
… and we may have use other methods such as thermal imagery, chemical analysis, and xylem pressure potentials to determine the degree of dependency of vegetation on groundwater.
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Remotely Sensed Estimates of Evapotranspiration in Agricultural Areas of Northwestern Nevada: Drought, Reliance, and Water Transfers
… derived from Landsat multispectral optical and thermal imagery over a eleven-year period (2001 to 2011) and compared to variations in weather, water supply, and land use across four hydrographic areas in northwestern Nevada. Monthly ET was estimated using a land surface energy balance model, …
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Assessment of the demographics and network structure of swine populations in relation to regional disease transmission and contro.
… Additionally, the use of satellite-derived thermal imagery to verify the presence of commercial swine is described, along with its estimated sensitivity and specificity. Any regional disease elimination program must consider all swine populations, therefore non-commercial populations …
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Glacier Monitoring in Ladakh and Zanskar, northwestern India
… them difficult to study with remotely-sensed imagery alone. Various methods such as band ratios can be used effectively to map clean-ice glaciers; however, a thicker layer of debris often makes it impossible to distinguish between supraglacial debris and the surrounding terrain. Previously, a …
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Glacier Monitoring in Ladakh and Zanskar, northwestern India
… them difficult to study with remotely-sensed imagery alone. Various methods such as band ratios can be used effectively to map clean-ice glaciers; however, a thicker layer of debris often makes it impossible to distinguish between supraglacial debris and the surrounding terrain. Previously, a …
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Cooling Machines: Exploring the Heat Mitigation Effect of Urban Trees with Computer Vision
… though the positive impacts of urban trees on thermal comfort are long known and well-studied, little work is dedicated to how these impacts vary across trees of different species and morphology. This is due to both the complexity of studying vegetation life cycles at sufficient scale, as well …
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Bridging the Gap Between Lidar, Thermal, and Multispectral Remote Sensing for Irrigation Scheduling Applications
… fraction using unpiloted aerial vehicle (UAV) imagery during the pea growing season. Canopy fraction obtained using NDVI UAV imagery produced WDI values that agreed with canopy fraction derived using lidar demonstrating that NDVI provides accurate fc for the calculation of WDI. A technical …
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The application of Earth Observation for mapping soil saturation and the extent and distribution of artificial drainage on Irish farms
… were implemented using Landsat 8 multispectral imagery and topographical data. The RF classifier achieved overall accuracy of 91% in a binary segmentation of artifically-drained and poorly-drained classes. Compared with an existing soil drainage map, the RF model indicated that ~44% of soils in …
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Cognitive feature fusion for effective pattern recognition in multi-modal images and videos
… and recognition. In general, visible and thermal imagery are two popularly used data sources, though either of them has pros and cons. A novel approach is proposed to fuse the two data sources for effective pedestrian detection and tracking in videos. For the purpose of pedestrian …
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