A fast reconstruction method of 3D human body based on simple measurement suit

Abstract

The invention discloses a three-dimensional human body rapid reconstruction method based on a simple measuring suit. For each sample human body in the existing human body database, extract characteristic parameters and characteristic curves as human body characteristics to form a human body characteristic database; use PCA method to process and construct human body shape space; establish a mapping model between human body characteristics and human body shape space through neural network ;Measure the characteristic parameters of the human body to be measured, and use the simple measuring suit to obtain the characteristic curve of the human body to be measured; input the characteristic parameters and characteristic curves of the human body to be measured into the mapping model to obtain the corresponding feature vectors of the human body to be measured in the human body shape space eigenvalues, and then restore and reconstruct to obtain a 3D human body model. In the present invention, the characteristic curve of high spatial dimension provides abundant geometric information of the human body surface, and the multi-layer neural network accurately reflects the mapping model between the human body features and the human body shape space, thereby improving the accuracy and reliability of the three-dimensional reconstruction of the human body.

Description

technical field [0001] The invention relates to the technical field of three-dimensional human body modeling, in particular to a fast three-dimensional human body reconstruction method based on a simple measuring suit. Background technique [0002] 3D human body reconstruction is an important research direction in computer graphics, computer vision and other fields. The 3D human body reconstruction based on statistical samples makes full use of a large number of sample models and statistical learning methods to quickly construct human body models, providing basic and common materials for practical application scenarios such as 3D animation, product try-on and virtual fitting. [0003] In computer graphics, a 3D human body model is usually represented by thousands or even tens of thousands of spatial point clouds or triangular meshes. PCA (Principle Component Analysis), that is, principal component analysis, is a commonly used statistical method. Its main idea is to transfor...

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Problems solved by technology

[0004] In daily life, human body models are often described by one-dimensional characteristic parameters such as height, weight, and measurements. There will still be intuitive differences in the shape area, and these differences must not be reflected by one-dimensional feature parameters

[0005] There must be a direct relationship between the human body shape space and human body characteristics. Obviously, the two are nonlinearly related, but in general, linear models are often used to approximate the mapping relationship between human body shape space and human body characteristic parameters, which is bound to Will affect the accuracy of the reconstructed 3D human body model

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