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 31 for “"High-resolution imagery"”.
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Exploring the Utility of High Resolution Imagery for Determining Wetland Signatures
… data technology and ease of accessing new, higher resolution geospatial data make study at local levels easier and more feasible (Barrette et al, 2000). The purpose of the current study is to evaluate new sources of geospatial data as potential variables to improve wetland identification and …
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Tree-Level Forest Monitoring with Artificial Intelligence Using Neural Networks and High-Resolution Imagery
… the combination of machine or deep learning with high resolution imagery for individual tree crown mapping. However, many of these studies have had difficulty with dense deciduous canopies and most have focused on tree detection and not individual tree segmentation. In this collection of studies, …
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Urban scene description for a multi scale classication of high resolution imagery case of Cape Town urban Scene
In this paper, a multi level contextual classification approach of the City of Cape Town, South Africa is presented. The methodology developed to identify the different objects using the multi level contextual technique comprised three important phases.
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ESTIMATION AND MODELING OF FOREST ATTRIBUTES ACROSS LARGE SPATIAL SCALES USING BIOMEBGC, HIGH-RESOLUTION IMAGERY, LIDAR DATA, AND INVENTORY DATA
… perspective of estimating forest attributes uses high resolution aerial imagery paired with light detection and ranging (LiDAR) remote sensing data to develop statistical estimates of forest structure. Two approaches within this perspective are presented: a pixel based approach and an object based …
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ESTIMATION AND MODELING OF FOREST ATTRIBUTES ACROSS LARGE SPATIAL SCALES USING BIOMEBGC, HIGH-RESOLUTION IMAGERY, LIDAR DATA, AND INVENTORY DATA
… perspective of estimating forest attributes uses high resolution aerial imagery paired with light detection and ranging (LiDAR) remote sensing data to develop statistical estimates of forest structure. Two approaches within this perspective are presented: a pixel based approach and an object based …
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Identifying Erosional Trends of Upper Galveston Bay Salt Marshes from 2004-2018 High Resolution Imagery: A GIS and Remote Sensing Analysis
… years. Data generated by aerial and satellite imagery has proven invaluable to assessing the health of wetland environments. Utilizing imagery of a certain location over the course of many years can produce a time series which can be used to observe visual changes in the environment throughout …
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Applications of uncrewed aerial systems for rapid phenotyping using recurrent high-resolution imagery with currant (Ribes spp.) as a model berry shrub crop
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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USING DEEP LEARNING AND UAV IMAGERY TO DETECT ELKHORN CORAL IN ST. CROIX’S EAST END MARINE PARK
… in the US Virgin Islands. We captured high resolution imagery of a reef in St. Croix’s East End Marine Park using a Wingtra One UAV. We then used deep learning techniques to detect individual coral colonies. We compared two deep learning models, FasterRCNN and MaskRCNN, and found that …
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Mapping urban forest extent and modeling sequestered carbon across Chattanooga, TN using GIS and remote sensing
… supervised hybrid classification across Landsat imagery that quantified the extent of urban forest loss across Chattanooga between 1984 and 2021, 2) modeled the carbon sequestered in the biomass of Chattanooga’s urban trees using field data and vegetation indices, and finally 3) developed the …
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Sub-Pixel Classification of Historical and Current Marsh Habitat For the Eastern Mississippi Gulf Coast Using Remotely Sensed Images
… forests, low intensity developed areas and high intensity developed areas using high spatial resolution imagery and applying the proportions to medium resolution imagery for the past twenty-seven years (1984-2011) for the Western Lower Pascagoula River Basin. The other main objective was to …
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An Alternate Approach to Ecosystem Mapping: Fusing Orthophotography with LANDSAT ETM+ Data for a Object-Based Classification, South Eastern Arkansas.
… quantifying ecosystems is the cost of obtaining high resolution imagery necessary for a high resolution land cover assessment. This research shows how free, different resolution imagery (orthoimages and LANDSAT ETM+) could be combined to produce a hybrid dataset with enhanced spectral, spectral …
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Reconfigurable satellite constellations for geo-spatially adaptive Earth observation missions
… and fast responses provided ReCon can complement high-resolution imagery provided by UAS. A newly proposed ReCon framework improves the model fidelity of previous approaches by utilizing Satellite Tool Kit (STK) simulations and Earth observation mission databases. This thesis investigates the …
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Robotic 3D Reconstruction Utilising Structure from Motion
… accurate 3D models, it is necessary to use high-resolution imagery, and the difficulties of working with this on remote robotic platforms is explored in some detail.
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Application of high resolution remote sensing and GIS techniques for evaluating urban infrastructure
… land-use to make decisions. The availability of high-resolution imagery is now expanding the type of information that can be used for planning as well as for understanding urbanization dynamics. This research uses very high resolution orthoimagery with three bands to obtain information about …
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Development of a Peripheral-Central Vision System to Detect and Characterize Airborne Threats
… camera (with a perspective lens) provides high resolution imagery of a specific object. This pair form a heterogeneous stereo vision system that can support range resolution. A novel peripheral-central vision (PCV) system to detect, localize, and classify an airborne threat is first …
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Building Footprint Reconstruction from Satellite Imagery Using a Deep Learning Framework with Geometric Regularization
… evolved, now capturing vast amounts of high-resolution imagery. These satellites continuously transmit data that helps us monitor urban expansion, plan infrastructure, and respond to natural disasters. Satellite imaging plays a crucial role in creating accurate spatial maps, offering …
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A commercial architecture for satellite imagery
… government-developed satellites which produce high resolution imagery. This study focuses on the concept of the U.S. government purchasing proven and successful commercial satellites with minimal non-recurring engineering costs to help augment current national systems. The benefit with this …
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Using high resolution satellite imagery to map aquatic macropyhtes on multiple lakes in northern Indiana
… are expensive and time consuming, and low resolution imagery is not detailed enough to map multiple, small lakes spread out over large areas. This study evaluated methods for mapping aquatic plants using high resolution Quickbird satellite imagery obtained in 2007 and 2008. The study area …
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Geospatial Analysis of Informal Settlement Development in Cape Town
… of informal housing within settlements. High-resolution imagery was used to classify shacks in the targeted informal settlements. An accuracy assessment was conducted to validate any subsequent analysis that was completed from classified imagery. The overall accuracies ranged between …
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An experimental and numerical study on the fracturing processes in Opalinus shale
… flaws and various bedding plane orientations. High speed and high resolution imagery were used to capture crack initiation, -propagation and -coalescence between the flaw pairs. It was found that as the bedding plane angle increased, cracks initiating at the flaw tips tended to propagate more …
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