Grid generation method and system for root node merging of oblique photography model

The invention discloses an oblique photography model root node merging-oriented grid generation method and system, and the method comprises the steps: obtaining oblique photography model data which comprises a plurality of tile files, and each tile file comprises a root node file; establishing a spatial index according to the oblique photography model data; tile files in the oblique photography model data are traversed according to the spatial index, root nodes in the tile files are resampled, and a sampling point set is obtained; triangulation is carried out on the sampling point set, and a rough layer grid is constructed; and cutting the rough layer grid to obtain a finally generated grid. According to the method, the root nodes are sampled, the rough layer grids are constructed, and the inclined layers are merged into a rougher layer, so that the number of nodes and the number of grids which are loaded at the same time in a large scene are reduced, and the network rendering speed is increased. 本申请公开了一种面向倾斜