Inclined photography building monomer implementation method based on grid assistance

The invention discloses an oblique photography building monomer implementation method based on grid assistance. The method comprises the following steps: constructing a grid structure, carrying out gridding processing on the whole model, evaluating a grid through a linear interpolation method, determining an area belonging to a building through a height threshold value, and removing triangular patches belonging to the ground in combination with a spatial clustering algorithm of area growth. And removing the triangular patch belonging to the tree through the information of the texture picture. According to the method, a grid auxiliary method is used, heavy manual operation in a traditional method is overcome, human resources are saved, and monomer processing of the building in the oblique photography model is reliably and accurately achieved. 本发明公开了一种基于网格辅助的倾斜摄影建筑物的单体化实现方法。本发明通过构造一个网格结构，对整个模型进行网格化处理，通过线性插值法对网格进行求值，通过高度阈值来确定属于建筑物的区域，并且结合区域生长的空间聚类算法去除掉属于地面的三角面片，通过纹理图片的信息去除掉属于树木的三角面片。本发明使用网格辅助方法，克服了传统方法中繁重的人工操作，节