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Generation of Simulated Geospatial Images from Global Elevation Model and SPOT Ortho-Image
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 Title & Authors
Generation of Simulated Geospatial Images from Global Elevation Model and SPOT Ortho-Image
Park, Wan Yong; Eo, Yang Dam;
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 Abstract
With precise sensor position, attitude element, and imaging resolution, a simulated geospatial image can be generated. In this study, a satellite image is simulated using SPOT ortho-image and global elevation data, and the geometric similarity between original and simulated images is analyzed. Using a SPOT panchromatic image and high-density elevation data from a 1/5K digital topographic map data an ortho-image with 10-meter resolution was produced. The simulated image was then generated by exterior orientation parameters and global elevation data (SRTM1, GDEM2). Experimental results showed that (1) the agreement of the image simulation between pixel location from the SRTM1/GDEM2 and high-resolution elevation data is above 99% within one pixel; (2) SRTM1 is closer than GDEM2 to high-resolution elevation data; (3) the location of error occurrence is caused by the elevation difference of topographical objects between high-density elevation data generated from the Digital Terrain Model (DTM) and Digital Surface Model (DSM)-based global elevation data. Error occurrences were typically found at river boundaries, in urban areas, and in forests. In conclusion, this study showed that global elevation data are of practical use in generating simulated images with 10-meter resolution.
 Keywords
Simulated Geospatial Images;SPOT Ortho-images;Global Elevation Data;Exterior Orientation Parameters;
 Language
English
 Cited by
1.
대기보정된 Landsat TM 영상으로부터 모의영상 제작,이수봉;라푸히엔;어양담;편무욱;

한국측량학회지, 2015. vol.33. 1, pp.1-9 crossref(new window)
1.
Analysis on the applicability of simulated image from SPOT 4 HRVIR image, KSCE Journal of Civil Engineering, 2017, 21, 4, 1434  crossref(new windwow)
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