Fig. 2From: Topographic optimal network design of the unified control points in KoreaResiduals after removing the smoothed DEM based on the convolution theorem using one-dimensional Gaussian filter: (Top) Sigma 0.45 (Middle) Sigma 0.65 (Bottom) Sigma 0.85. Each row represents a window size of 5, 10, and 20 (from left), respectively.Back to article page