Method for automatically constructing three-dimensional face muscle model

Abstract

The invention provides a method for automatically constructing a three-dimensional face muscle model. The muscle model is the most commonly used facial animation drive model at present, three-dimensional facial expression changes are driven by simulating contraction of the facial muscle; however, an artist spends much time in performing fine adjusting on the construction of the conventional face muscle model, and after the face muscle model is changed at a time, all the construction even needs to do again. Based on the problems, the invention provides the novel method for constructing the face muscle model; the method realizes the automatic construction and the assembly of the face muscle by researching a space position mapping relationship between the three-dimensional face characteristic points and the face muscle; and an experimental result proves that the method makes the artist be free from fussy hand debugging, and enables a normal user to customize a three-dimensional image with various expressions required per se.

Description

technical field [0001] The invention relates to the field of automatic construction of muscle models in the field of computer simulation of three-dimensional facial expression animation. Background technique [0002] Computer simulation of 3D facial expression animation is a key application in computer graphics. Commonly used facial expression animation methods are mainly divided into three categories, namely methods based on shape interpolation, methods based on geometric deformation, and methods based on simulation. [0003] The method based on shape interpolation is an intuitive and easy-to-implement facial expression animation method. Its main technical principle is to use linear or nonlinear interpolation technology to interpolate static face models with different expressions to obtain intermediate transition expressions. face model. Although the method based on shape interpolation is simple, static face models with various extreme expressions need to be prepared and ...

AI Technical Summary

Problems solved by technology

However, this type of method still has a big bottleneck in the construction of facial muscle models, which not only greatly limits its flexibility in application, but also makes it difficult for ordinary users to customize their desired facial models with expression functions.

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