Assessing interpolation accuracy in elevation models

摘要: Methods that identify the spatial variation in elevation model accuracy and highlight relative are proposed. Visualization within geographic resources analysis support system (GRASS) is used to preserved interpolation digital contour data produce models. The routines inverse distance weighting, flood filling, simultaneous over-relaxation, one-dimensional spline fitting. results of process presented as colored contours, shaded relief maps, aspect products Laplacian filtering, profile plan convexity, visualizing root mean square error methods. >