Method for applying cut triangular patch to ridge repair of three-dimensional model

Abstract

The invention relates to a method for applying a cut triangular patch to ridge repair of a three-dimensional model, which adopts a computer for processing and comprises the following steps: acquiring a to-be-processed model file; wherein the to-be-processed model file is a model file intersected with the target ridge; wherein the to-be-processed model file comprises corresponding model file data; wherein the model file data comprises geometric information of the model file and texture information of the model file; wherein the geometric information of the model file comprises coordinates of vertexes and texture coordinates of triangles in a spatial triangulation network; carrying out thread task allocation on the to-be-processed model file to obtain a plurality of thread tasks; executing a plurality of thread tasks to obtain a second ridge line; wherein the second ridge line is a ridge line after the target ridge line is repaired; wherein each thread task is to obtain a triangle corresponding to the model file according to a target ridge drawn in advance by one model file, and fuse the model files according to the triangle.

Description

technical field [0001] The invention relates to the technical field of three-dimensional model trimming, in particular to a method for repairing ridgelines of a three-dimensional model by cutting triangular patches. Background technique [0002] Oblique photography technology is a high-tech developed in the field of international photogrammetry in the past ten years. It has become the main way of urban modeling. It not only can truly reflect the situation of ground objects, but also has rich geographical and image information. Its The application has greatly reduced the high cost of urban modeling. However, most of the 3D city models reconstructed by oblique photogrammetry are used for browsing; artificial interactive modeling is mainly for fine modeling of single buildings. Not all 3D architectural models require high precision. Therefore, simple interactive editing of oblique photogrammetric 3D models of non-landmark buildings can meet the effect requirements of urban mo...

AI Technical Summary

Problems solved by technology

[0003] However, due to the influence of photogrammetry accuracy and other issues, the oblique photogrammetry 3D model has a rough structure and high noise at the corners and edges. It needs to be repaired through interactive editing to meet the needs of digital city platform display and analysis. The key to restoration It is how to repair the local structure of the 3D model

However, in these areas, the model regularity is missing and the features are not obvious. It takes a long time to construct topology and extract features by extracting feature lines and then further processing with feature lines. An effective and fast 3D model edge is urgently needed. line repair method

Images