Detecting the Spatial Inconsistency between the Updated Rivers and Valleys
数据库更新中河流与山谷线一致性检测

In order to detect the spatial conflicts that rivers deviate from the valleys in the process of topographic database updating, a new algorithm using the vector projection method to quickly extract the valley lines related to the rivers is proposed. Based on the algorithm, a method to detect the inconsistency that rivers deviate from valleys is advanced. The above algorithm has been implemented by VB6.0 MO, and achieved the better efficiency.