Cavity filling method based on surface data

Abstract

The invention belongs to the technical field of image processing and provides a cavity filling method based on surface data. The cavity filling method based on the surface data comprises the steps that firstly, voxelization is conducted on the surface of the surface data, a surface cavity in the voxelized surface is filled by means of a gradual interpolation, the internal space of the closed voxelized surface is filled according to the voxelization method, and finally the surface data are re-constructed according to the surface drawing method, so that the purpose of cavity filling is realized. By the adoption of the cavity filling method based on the surface data, abnormal edges of the cavity can be deleted. In addition, the invention correspondingly provides a cavity filling system based on surface data. According to the cavity filling method and system based on the surface data, multiple cavities with any complicated cavity edges can be filled.

Description

Technical field [0001] The present invention involves the field of image processing technology, especially for a blank filling method based on surface data. Background technique [0002] The triangular grid model is a three -dimensional model representation method widely used in 3D modeling and computer graphics. It divides the irregular curved surface of the model into a large and small triangular tablet.The apex and edge information on the tablet to build a three -dimensional model. Compared with the elevated virus model, it can greatly reduce the stored storage volume, increase the drawing speed of the model, and adjust the size of the film as needed to increase the size of the tablet.Model accuracy. [0003] The triangular grid model can be generated through various methods. You can use a 3D scanner to scan the surface of the object to obtain the point cloud, and then the surface cloud fitting to form a surface model.Results to reconstruct the mesh model.However, due to the l...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the method of generating the mesh model, for example, the point cloud of the local area of ​​the scanned object by the 3D scanner is missing, or the target object is incomplete due to the segmentation of voxel data, or because of the defect of the surface reconstruction algorithm itself , may result in a non-fully closed mesh model with holes

This kind of model does not conform to the actual object structure and does not conform to the aesthetics. The most important thing is that it may have adverse effects on subsequent processing such as model smoothing and refinement. Therefore, this kind of non-closed model with holes must be corrected and filled. Missing parts of the surface model, forming a closed mesh model

[0004] In summary, the existing hole filling methods obviously have inconvenience and defects in actual use, so it is necessary to improve