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Based on Digital Elevation Model (DEM) for Farmland Landscape Pattern
International Journal of Smart Home, 2016Taking Gongyi city as a study area and by using the ArcGIS software, this paper analyzed the characteristics of farmland landscape patterns at the five slope gradients by Digital Elevation Model（DEM）, and explored the human disturbance on farmlands. The results indicated that the distribution of farmland landscape elements differed obviously with slope
Yansong Wang +3 more
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Advances in Space Research, 2019
Remote sensing data, such as satellite images, and remote sensing derived digital elevation models (DEMs) are credited by simplifying many geological processes that require costly and laborious field work, such as lineament extraction.
A. Soliman, Ling Han
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Remote sensing data, such as satellite images, and remote sensing derived digital elevation models (DEMs) are credited by simplifying many geological processes that require costly and laborious field work, such as lineament extraction.
A. Soliman, Ling Han
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A MATLAB-based digital elevation model (DEM) data processing toolbox (MDEM)
Environmental Modelling & Software, 2019Abstract A MATLAB-based digital elevation model (DEM) data processing toolbox called MDEM is built upon an improved DEM data processing algorithm, known as the PDEM, for rectifying flat areas and depressions in DEM data and producing realistic patterns of flow accumulation and extracted channel networks. Compared to the original PDEM, the computation
Feifei Pan, Xiaohuan Xi, Cheng Wang
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Quality Assessment of Globally Available Digital Elevation Model (DEM) for Mountainous Region
Journal of Geographical Studies, 2021The study assessed the accuracies of globally available Digital Elevation Models (DEM’s) i.e., SRTM v3, ASTER GDEM v2 and ALOS PALSAR DEM with respect to Topo-DEM derived from topographic map of 5m contour interval. 100 ground control points of the elevation data were collected with the help of kinematic hand held GNSS (Global Navigation Satellite ...
Sangay Gyeltshen +3 more
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An evaluation of digital elevation models (DEMs) for delineating land components
Geoderma, 2014Abstract Land component boundaries often coincide with transitions in environmental land properties such as soil, climate and biology. Image segmentation is an effective method for delineating terrain morphological units from digital elevation models (DEMs). This paper compares the land components derived from five DEMs.
Zama Eric Mashimbye +2 more
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The effects of wavelet compression on digital elevation models (DEMs)
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004This paper investigates the effects of lossy compression on floating-point digital elevation models using the discrete wavelet transform. The compression of elevation data poses a different set of problems and concerns than does the compression of images.
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Development of digital elevation models (DEMs) for agricultural applications
2018Topographic data collected using RTK-DGPS-equipped farm vehicles during field operations could add additional benefits to the original capital investment in the equipment through the development of high accuracy field-DEMs. Repeated surveys of elevation data from repeated field operations may improve DEM accuracy over time.
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An evaluation of available digital elevation models (DEMs) for geomorphological feature analysis
Environmental Earth Sciences, 2020A digital elevation model (DEM) is an essential dataset for many land feature analyses, such as geomorphological feature analyses, which are very important for many types of studies. The present study involved the evaluation of five of the most common DEMs and their derived geomorphological features in the Humrat Assahn basin.
Majed Ibrahim +3 more
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A digital elevation model based method for a rapid estimation of flood inundation depth
Journal of Flood Risk Management, 2019In recent years, the acquisition of data from multiple sources, together with improvements in computational capabilities, has allowed to improve our understanding on natural hazard through new approaches based on machine learning and Big Data analytics ...
S. Manfreda, C. Samela
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Influence of digital elevation model resolution on rockfall modelling
Geomorphology, 2019Spatial models are an effective tool for determining potential rockfall source, transit and deposit areas. The reliability of the final rockfall modelling results depends on the quality of the input data, which is mostly based on the digital elevation ...
B. Žabota, Blâz Repe, M. Kobal
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