On the Characteristics of Simulated Terrain Using The Successive Random Addition Midpoint Displacement Method
نویسندگان
چکیده
The random midpoint displacement method is a widely applied algorithm used for terrain simulation. This paper first reviews the underlying theory and the algorithm of the random midpoint displacement method and then analyzes the characteristics of the simulated terrain. An implementation is developed for the successive random addition midpoint displacement method using the programming language C. Several terrains are then generated with different parameters. The fractal dimensions of these simulated terrains as well as five selected natural digital terrains from the Taiwan area are computed via the variogram method. The comparison indicates that the natural digital elevation models (DEMs) are more anisotropic than the simulated terrains. This finding agrees with the expectation that fractal terrains in general have no inherent global erosion features due to their isotropy and stationarity.
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