基于栅格覆盖模型的林相图斑快速矢量化方法

摘要

This paper analyzed the characteristics of forest map and then prompted a hypothesis that all forest batches can be depicted well by raster coverage model. The whole digitizing process was started by segmentation the whole map into different parts to depict the forest batches roughly. Then mathematical morphology transform was used to achieve a fine-detail description. The raster-vector transform was used to obtain the final vectorization maps. All the process can be run on the geo-informatics platform of ArcGIS, without drawing border of polygons manually. These results showed that this method can achieve satisfied result with higher accuracy and degree of automation.%本文提出基于栅格覆盖的面状目标快速矢量化方法，以林相图斑为例，引入栅格覆盖模型，采用面向对象思想，结合图像分割及数学形态学等，实现其快速矢量化。结果表明，采用栅格覆盖模型，显著提高了矢量化效率；图斑拓扑关系得以保存，精度满足应用要求，自动化程度较好。