Scale-Dependent Representations of Relief Based on Wavelet Analysis

Automatic generalization of geographic information is the core of multi-scale representation of spatial data, but the scale-dependent generalization methods are far from abundant because of its extreme complicacy. This paper puts forward a new consistency model about scale-dependent representations of relief based on wavelet analysis, and discusses the thresholds in the model so as to acquire the continual representations of relief with different details between scales. The model not only meets the need of automatic generalization but also is scale-dependent completely. Some practical examples are given.