TY - JOUR
T1 - An evaluation of DEM accuracy
T2 - elevation, slope, and aspect
AU - Bolstad, P. V.
AU - Stowe, T.
PY - 1994
Y1 - 1994
N2 - The accuracy of elevations, slopes, and aspects were evaluated for two DEMs of an area centered on Blacksburg, Virginia, in the southern Appalachian Mountains. The first was a US Geological Survey (USGS) 7.5-minute quadrangle-based DEM with 30m postings, produced utilizing automated stereocorrelation of 140 000-scale leaf-off aerial photographs with a Gestalt Photomapper (GPM). The second DEM of the same area was produced from a SPOT panchromatic stereopair using a proprietary stereo-correlation technique developed by the STX corporation, among those used by SPOT Image Corp. for high resoultion DEM production. EM accuracy was assessed visually and through comparisons of DEM-derived to field-surveyed values for elevation, slope, and aspect. -from Authors
AB - The accuracy of elevations, slopes, and aspects were evaluated for two DEMs of an area centered on Blacksburg, Virginia, in the southern Appalachian Mountains. The first was a US Geological Survey (USGS) 7.5-minute quadrangle-based DEM with 30m postings, produced utilizing automated stereocorrelation of 140 000-scale leaf-off aerial photographs with a Gestalt Photomapper (GPM). The second DEM of the same area was produced from a SPOT panchromatic stereopair using a proprietary stereo-correlation technique developed by the STX corporation, among those used by SPOT Image Corp. for high resoultion DEM production. EM accuracy was assessed visually and through comparisons of DEM-derived to field-surveyed values for elevation, slope, and aspect. -from Authors
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M3 - Article
AN - SCOPUS:0028668544
SN - 0099-1112
VL - 60
SP - 1327
EP - 1332
JO - Photogrammetric Engineering & Remote Sensing
JF - Photogrammetric Engineering & Remote Sensing
IS - 11
ER -