Method for point-to-point matching between non-rigid three-dimensional models

A three-dimensional model, non-rigid technology, applied in 3D modeling, character and pattern recognition, details involving 3D image data, etc., can solve problems affecting the accuracy of final matching, achieve superior computing efficiency and stability, and compact structure , matching the exact effect

Active Publication Date: 2020-03-24
CENT SOUTH UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the descriptor used in the early stage and the correct establishment of the geometric association between point pairs still seriously affect the accuracy of the final match.

Method used

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  • Method for point-to-point matching between non-rigid three-dimensional models
  • Method for point-to-point matching between non-rigid three-dimensional models
  • Method for point-to-point matching between non-rigid three-dimensional models

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Embodiment Construction

[0039] The high-performance 3D model matching method disclosed in this embodiment is called ASMWD-PMF (product manifold spatial filtering based on anisotropic spectral manifold wavelet descriptor). The matching between models with approximately isometric deformation can be realized very accurately, the calculation efficiency of the method is high, and the performance is far superior to the existing matching method, which can provide important technical guarantee for the subsequent application of the three-dimensional model.

[0040] Such as figure 1 As shown, in specific implementation, the detailed calculation steps are:

[0041] 1. Establish anisotropic spectral manifold wavelet descriptor.

[0042] The algorithm of the descriptor can be divided into the following three steps:

[0043] 1.1 Calculate the anisotropic Laplace-Belthem matrix and its eigendecomposition of the model;

[0044] First calculate the anisotropic Laplacian-Belter Mi operator, and generally express th...

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Abstract

The invention discloses a method for point-to-point matching between non-rigid three-dimensional models. The method comprises the following steps: firstly, establishing an anisotropy spectrum manifoldwavelet descriptor; and taking the established descriptors as descriptor constraints of model points, and taking a thermonuclear relationship of each point on the model as a point pair relationship constraint to establish an objective function so as to realize optimal matching between the model points. According to the method, an anisotropy spectrum manifold wavelet descriptor is established at the earlier stage, and then a thermonuclear relationship is adopted as a point pair relationship constraint. Compared with an existing method, the anisotropy spectrum manifold wavelet descriptor has the advantages of being invariant in isometric deformation, capable of distinguishing intrinsic symmetry of the model, high in resolution capability and positioning capability, high in calculation efficiency and compact in structure. The thermonuclear relationship serving as a point pair relationship constraint is more excellent in calculation efficiency and stability than other methods adopting geodesic distance. Therefore, the method is clear in calculation, robust in result and accurate in matching.

Description

technical field [0001] The invention belongs to the fields of computer graphics and computer vision, in particular to a point matching method between non-rigid three-dimensional models. Background technique [0002] In the past ten years, with the rapid development of 3D model acquisition equipment and related technologies, digital 3D models can be used to represent very rich objects, and its related applications involve traditional computer-aided design, medical engineering and emerging industries such as multimedia technology , entertainment industry, etc. Retrieval, recognition and classification of 3D models, semantic segmentation, and migration are basic and important applications that widely exist in these fields, and the important prerequisite for realizing these applications is to establish accurate and efficient point-to-point matching between 3D models (following referred to as model matching). [0003] The core technology of mainstream methods for establishing m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T17/20G06K9/62
CPCG06T17/00G06T17/20G06T2200/04G06V10/757
Inventor 刘圣军李钦松胡玲刘新儒
Owner CENT SOUTH UNIV
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