Method and system for solving triangular mesh model of damaged area of damaged part

The invention belongs to the field of triangular mesh model damage area solving, and relates to a method and system for solving a triangular mesh model of a damage area of a damaged part. According to the method, the CAD triangular mesh model and the scanning triangular mesh model are automatically registered. And solving a closest point between the CAD triangular mesh model after automatic registration and the scanning triangular mesh model, and counting the distance between the closest point. Solving the error of the distance from the nearest point, and obtaining the defect part point cloud of the part with the error exceeding a threshold value. And traversing the point cloud of the defect part, and recovering the topological relation of the point cloud of the defect part according to the topological information of the triangular mesh model to obtain the triangular mesh model of the damage area. According to the method, a good initial value is provided for the coherent point drift method, the registration s