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Showing 1 to 6 of 6 for “"Airborne Laser Scanning (ALS)"”.
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Combined use of airborne laser scanning and hyperspectral imaging for forest inventories
… area, species, etc..) from the combination of Airborne Laser Scanning (ALS) and Hyperspectal Imaging (HI). The research is centered around three main topics: the development of new individual tree segmentation algorithms, the assessment of direct and indirect dendrometry methods, tree species …
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EXTRAÇÃO DE VARIÁVEIS DENDROMÉTRICAS DE FLORESTA URBANA UTILIZANDO DADOS DE LASER AEROTRANSPORTADO
… variables from an urban forest using Airborne Laser Scanning (ALS) data. The study area corresponds to the Condomínio Parque Residencial Vivenda do Imbuí, located in Salvador, Bahia, Brazil, and was selected for its diverse tree population in an urban environment. The methodology …
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Real-Time Realization of Lidar – Based Digital Surface Models for Airborne Safe Landing Zone Identification in Challenging Environments
… addressed robust filtering algorithms for the airborne laser scanning (ALS) data. Although most of these filtering algorithms are accurate and robust, they are limited to post-processing since they rely on computationally expensive algorithms and require high execution time that is not suitable …
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An assessment of archive stereo-aerial photographs for 3-dimensional reconstruction of damaged and destroyed archaeological earthworks
… events, such as landslides, whilst also verifying that such an approach had not been thoroughly investigated for archaeological adaptation. Via experimentation, a photogrammetric workflow has been designed and a number of variables identified that affect the quality of DSMs obtained …
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Hydrodynamic Effects of Salt Marsh Canopies and their Prediction using Remote Sensing Techniques
… operating a moving average smoothing filter on Airborne Laser Scanning (ALS) data. The automated procedure detected vegetated and non–vegetated surfaces using aerial NDVI which calibrated the filter and ensured ALS returns were representative of marsh surface elevation. Using the marsh surface …
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Object-based image analysis for detecting landforms diagnostic of natural hazards
… a topographic roughness measure derived from an airborne laser scanning (ALS) digital terrain model (DTM) and discuss its performance in detecting landforms principally diagnostic of natural hazards. I further develop OBIA-based algorithms for the detection of snow avalanches using near-infrared …