Method for controlling virtual human mouth motion

A technology of mouth movement and control method, applied in the field of virtual reality, can solve the problems such as the limitation of mouth shape and the lack of realism of simulation effect, and achieve the effect of clear physical meaning and simple mathematical model

Inactive Publication Date: 2009-10-28
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0005] In order to overcome the limitations of the prior art in the process of simulating the opening and closing movement of the mouth, the mouth shape range is limited and the simulation effect is not realistic, the present invention proposes a new mouth opening and closing movement control method, which can enhance the The control of the speed and degree of movement during the opening and closing of the human mouth improves the realism of the mouth animation

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  • Method for controlling virtual human mouth motion
  • Method for controlling virtual human mouth motion
  • Method for controlling virtual human mouth motion

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Embodiment Construction

[0020] This embodiment is based on the attached figure 2 shown in the operating procedure, and based on the attached Figure 4 A simple implementation of the mouth functional area is shown.

[0021] Firstly, the real face can be scanned by a 3D laser scanner to obtain the original 3D face grid point model, or the 3D modeling software such as 3DS MAX or MAYA can be used to manually build a 3D model of the face by the designer, or it can be obtained through Poser and other professional human body modeling software, directly export the required human head model from its model library, and get the attached image 3 .

[0022] Then, the functional area of ​​the mouth is divided from the three-dimensional human head mesh model through a computer input device. In order to obtain a finer mouth movement simulation effect, through the analysis of the human mouth closing movement characteristics, and referring to the definition of mouth FDP control points in the MPEG-4 standard, the ...

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Abstract

The invention discloses a method for controlling virtual human mouth motion, which comprises the following steps: after a three-dimensional human face grid model is acquired, consulting the definition for FDP characteristic points of a mouth area in MPEG-4 to select the characteristic points at the zygomatic arch, two mouth corners, upper boundary of lower lip and mandible boundary as boundary points of a mouth functional area, and finally determining the mouth functional area in the three-dimensional grid model according to the characteristic point coordinates of the zygomatic arch; and adopting an oscillating guide-bar mechanism model to drive grid points of the mouth functional area to move, simulating a real mouth opening-closing process, and eliminating the overstretching phenomenon at the boundary by processing a peak of a peak buffer area. The method can adopt the same mathematical model to realize opposite motion processes such as opening and closing of the human mouth under continuous condition, the mathematical model is simple, the physical significance is definite, the control is easy, and the simulation effect is vivid.

Description

technical field [0001] The invention relates to the field of virtual reality, in particular to a method for controlling mouth movement of a virtual human. Background technique [0002] Facial expression is an important way of human emotion transmission, and it is the basis for human to communicate with each other. The 3D facial animation technology started in the 1970s. After that, many researchers did a lot of research work in this field in order to obtain realistic 3D facial animation. Realistic facial animation has a wide range of applications. It can be used to simulate virtual characters in virtual environments, such as virtual characters in film and television dramas. It can also be used in many fields such as electronic games, video conferencing, and human-computer interaction. The main organ of human language communication plays a key role in human emotional communication. Whether the animation effect of the mouth is real or not has an important impact on the expres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 樊养余张抗吕国云王毅齐敏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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