层次特征点控制的线状要素Morphing方法

摘要

针对多尺度表达中同名线要素的变换问题,提出一种层次特征点控制下的线状要素Morphing变换方法,在已有的线性插值Morphing变换基础上,利用层次特征点对线要素进行分段控制,按对应弧段的结点的相对位置在本弧段的相同的相对位置处插入点,提高插值过程中点的位置对应精度,使中间比例尺的插值表达得到优化,提高Morphing变换的精度.%A new Morphing method for two linear features is proposed based on the feature points of the linear features to solve the problem of transformation between linear features of the same in multi-scale representation.To improve the position precision of points each other,hierarchical feature points are extracted so that linear features will be split into several parts.And every part can be matched with one of another linear features.Then new points will be added in one of the pairs the same relative position as others of the other one.Compared with the linear interpolation,the precision of Morphing of this method is improved,thus realizing a more reasonable representation between two linear features of two different scales.