A method for extracting a multi-prime interface based on dot-collective elements

Abstract

The invention discloses a method for extracting a multi-prime interface based on point collective elements, which comprises the following steps: step 1, acquiring point cloud data of an image, and carrying out Gaussian filter denoising; step 2, converting a point set based on a spherical neighborhood, and highlighting a demarcation point; step 3, calculating the minimum circumscribed ball parameter, obtaining the minimum circumscribed ball point set, and utilizing the spherical point to shrink to obtain a single interface; step 4, calculating the minimum circumferential ball parameters again,obtaining the minimum circumferential ball point set, and dividing the multi-partition interfaces by utilizing the spherical point shrinkage sequence. A Gaussian filter is used for denoise in that multi-quality interface extraction method of the invention, so the correctness of the model in the processing process is ensured and the influence of the noise point is reduced. Through the weighted boundary point highlighting method, the purpose of reasonable use of neighborhood information is better ensured, the boundary point is accurately demarcated, the problem of unclear interface caused by neighborhood influence is solved, and the veracity of boundary point judgment is better ensured in the model processing.

Description

technical field [0001] The invention belongs to the technical field of multi-substance interface extraction methods, and in particular relates to a multi-substance interface extraction method based on point collective voxels. Background technique [0002] Traditional isosurface extraction techniques are suitable for the visualization of scalar fields. However, in real life, almost all objects are composed of two or more materials. It is difficult for isosurface extraction methods to support objects containing more than two materials. Therefore, extracting the interface of multi-material objects has become the focus of current research work. The technology of extracting multi-mass interfaces not only occupies a very important position in the fields of visualization technology and reverse engineering, but also has a wide range of applications in the fields of medicine, geological exploration, and meteorology. [0003] Each part inside an object can be represented by its outer...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a multi-mass interface extraction method based on point collective voxels, which solves the problems that the existing multi-mass interface extraction method is suitable for a small number of media, is sensitive to noise, and cannot accurately find the boundary surface.

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