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A 3D mesh model mosaic method based on cubic b-spline interpolation

A technology of model splicing and three-dimensional mesh, applied in image data processing, instruments, etc., can solve the problems of not smooth splicing area, low precision of model splicing, large amount of calculation, etc., achieve seamless and smooth splicing and fusion, and reduce computational complexity Accuracy, high robustness effect

Active Publication Date: 2022-02-18
ZHONGBEI UNIV
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Problems solved by technology

[0004] In order to solve the shortcomings of the existing 3D grid model stitching methods, such as low model stitching accuracy, not smooth stitching area, and large amount of calculation, the present invention proposes a 3D mesh model stitching method based on cubic B-spline interpolation

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  • A 3D mesh model mosaic method based on cubic b-spline interpolation
  • A 3D mesh model mosaic method based on cubic b-spline interpolation
  • A 3D mesh model mosaic method based on cubic b-spline interpolation

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Embodiment Construction

[0052] Attached below Figure 4 And embodiment the present invention is described in further detail.

[0053] Such as figure 1 As shown, the three-dimensional grid model splicing method based on cubic B-spline interpolation in the present invention is applied to Figure 4 The shark and horse models are spliced ​​and fused to obtain a new model. The specific implementation process includes steps 1 to 6:

[0054] Step 1, input source model source and target model target.

[0055] The file format of source model and target model can be off, obj, ply file format. Here, import the source model shark.obj( Figure 4 model on the left) and the target model horse.obj ( Figure 4 middle model), store the source model data (including points, edges, faces, and the topological relations among them) in source, and store the target model data (including points, edges, faces, and the topological relations among them) in Enter the target for subsequent steps to operate on the model.

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Abstract

The invention provides a three-dimensional grid model mosaic method based on cubic B-spline interpolation, which belongs to the technical field of three-dimensional graphics. It mainly solves the shortcomings of the existing 3D grid model stitching methods, such as low accuracy of model stitching, not smooth stitching area, and large amount of calculation. According to the selected three-dimensional grid model, the present invention first determines the boundary of the area to be spliced, identifies and records the boundary point set, and uses cubic B-spline interpolation to interpolate the boundary point set; then performs bicubic B-spline surface interpolation on the boundary curve to obtain the splicing area Continuous surface; finally, resample the stitched area, triangulate and smooth it, so as to achieve seamless smooth stitching and fusion of the mesh model. This method is suitable for mesh models with any splicing boundaries. Using existing 3D models to quickly generate new models, it is a basic operation of geometric model editing and can be widely used in medicine, commercial advertising, animation entertainment, and industrial modeling and manufacturing applications.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional graphics, and in particular relates to a three-dimensional grid model splicing method based on cubic B-spline interpolation. This method is suitable for extracting feature lines on the surface of a 3D point cloud model, which are used to describe the geometric features of the model. Background technique [0002] With the rapid development of graphics technology and the widespread use of 3D modeling tools, how to obtain models quickly and conveniently, and how to obtain new models through existing models have increasingly become research hotspots in the field of digital geometry processing. The splicing of 3D mesh models is a basic operation of 3D model editing, which provides an important means for 3D model editing. Therefore, it has broad application prospects in industries such as film and television special effects, 3D advertisement production, entertainment games, and virtual realit...

Claims

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Application Information

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IPC IPC(8): G06T19/20
CPCG06T19/20G06T2219/2008
Inventor 韩燮刘姝玉贾彩琴庞敏
Owner ZHONGBEI UNIV