The relationship between digital elevation model posting density and vertical accuracy is dependent on various terrain characteristics (e.g. slope, topographic variability, and land cover) as well as sensor characteristics (e.g. sensor type and viewing geometry). To obtain a better understanding of these relationships and of the factors that contribute to them, join Intermap and Carahsoft’s joint webinar entitled “The Importance of DEM Accuracy and How It’s Measured.” The webinar will present concise explanations about the difference between digital elevation model (DEM) resolution, precision, and accuracy, provide the primary statistical methods for determining elevation accuracy (RMSE, LE90, and LE95), as well as review what influences elevation accuracy, such as sensor technology and terrain characteristics.

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