Method for realizing three-dimensional facial animation based on layered modeling and multi-body driving

A three-dimensional face, realization method technology, applied in animation production, image data processing, instruments, etc., can solve the problem of unable to represent the change of the visible part of the face, and achieve the effect of improving the sense of realism and flexibility

Inactive Publication Date: 2011-08-17
SHANGHAI UNIV
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  • Claims
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Problems solved by technology

[0008]1. Established a skin-muscle-skeleton-eye layered human face model, which divides the human face into two types: flexible body and rigid body. Establish a triangular mesh deformation model, and establish a ge...

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  • Method for realizing three-dimensional facial animation based on layered modeling and multi-body driving
  • Method for realizing three-dimensional facial animation based on layered modeling and multi-body driving
  • Method for realizing three-dimensional facial animation based on layered modeling and multi-body driving

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Embodiment Construction

[0059] This implementation method of 3D human lazy animation based on layered modeling and multi-body drive, the specific operation steps are as follows:

[0060] 1 Hierarchical face modeling

[0061] 1.1 Rigid-flexible body classification modeling

[0062] (1) Take a frontal photo and a side photo when the face is in a naturally relaxed state, with both eyes facing the front and the head perpendicular to the ground, and preprocess them, as shown in the attached figure 1 shown.

[0063] (2) According to the individualized method of the standard model, the standard facial skin mesh model is deformed, and the principle of overall transformation and local transformation is used. The local transformation adopts the DFFT algorithm, and the following is obtained: figure 2 The facial skin mesh model and the rendering of the model after texture mapping are shown.

[0064] (3) Establish a triangular mesh deformation model and a geometric parameter non-deformable model for the flexi...

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Abstract

The invention relates to a method for realizing a three-dimensional facial animation based on layered modeling and multi-body driving. In the method, on the basis of constructing a layered facial model, independent driving is carried out according to the characteristics of each rigid or flexible body so as to simulate more true and more subtle expressions to synthesize driving effects of eyes and a mouth. In the embodiment of the invention, the three-dimensional facial animation can be acquired through simulation experiments only by respectively shooting a front photograph and a profile photograph of the face of a model, wherein the face of the model needs to be in a naturally relaxed state, two eyes look ahead and the head needs to be vertical to the ground. The method for realizing a three-dimensional facial animation based on layered modeling and multi-body driving is used as the key link of synthesizing a virtual human and has an important actual application value to human-machine interaction and a virtual human voice animation system.

Description

technical field [0001] The present invention relates to a method for realizing a three-dimensional human face animation based on layered modeling and multi-body drive, which uses layered face modeling as an entry point, and learns from the different movements and expression characteristics of rigid and flexible bodies in various parts of the face, etc. Starting from the aspect, the 3D virtual face modeling and expression driving are realized. Background technique [0002] Three-dimensional virtual reality can bring people a strong visual impact. Among them, virtual characters are the main body of activities in the virtual world. With the development of virtual reality technology, the design of virtual characters has become a research topic that attracts attention. Research on face modeling and expression driving is a very critical link in the synthesis of virtual humans, and has become a research hotspot in the field of computer graphics and images. [0003] The existing fa...

Claims

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Application Information

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IPC IPC(8): G06T13/40
Inventor 曾丹郑大岳裴丽陈剑张之江康晨
Owner SHANGHAI UNIV
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