一种新的基于形态学编码的地形骨架特征选择方法

Since current profile recognition methods are not able to extract the precise skeleton and special terrain feature, a new profile recognition method combined with morphology is proposed to solve skeleton feature problems. In this method, the candidate points are extracted by profile recognition, and then polygon stripe will be built according to direction coefficients. Scale feature areas are put forward based on polygon stripe to take advantage of morphological idea. Multiple morphological codes are proposed to simplify the scale feature areas, and obtain the scale feature lines. In order to satisfy the requirements about vector skeleton features in the various fields, the restoration algorithms for vector model are proposed to extract the skeleton feature lines. Finally, a series of strategies about keeping out branches and ring process are presented in this paper, which solved the problems about missing trunk lines and ring features. These methods have been tested on the benchmark data and real elevation data. As a result, the skeleton feature lines produced by these methods outweigh the traditional method as a whole.