Model processing method and system for three-dimensional model

Abstract

The invention provides a three-dimensional model processing method and system, and the method comprises the steps: carrying out the sorting and coding of a plurality of polygon patches through a Morton code method based on the extracted bounding box information of a first model, and determining a plurality of coded polygon patches; then, on the basis of a plurality of coded polygon patches, a model hierarchical bounding volume is constructed through a local ordered clustering method; next, an unsigned distance field of the sampling point cloud is determined based on the bounding box information and the model hierarchical bounding volume. And further, performing internal and external detection on the first sampling point through an internal and external judgment algorithm according to the patch information, and determining a symbol distance field of the sampling point cloud in combination with the unsigned distance field. And finally, generating a target three-dimensional model according to the symbol distance field of the sampling point cloud. The method adopts a model processing method based on an implicit model, and has the beneficial effects of high modeling precision and efficiency, less memory occupation, high processing flexibility and the like. In this way, the precision and efficiency of performing model processing on the three-dimensional model can be effectively improved.