Rapid generation method for facial animation

An animation and fast technology, applied in the field of image processing, can solve the problems of insufficient real-time and fidelity, high complexity of face animation, and achieve the effect of increasing matching difficulty, good real-time performance and rapid replacement.

Inactive Publication Date: 2010-09-08
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

3D face animation has shortened the distance between humans and computers, but 3D face reconstruction is still a research difficulty in the computer field
At the same time, the complexity of controlling the dense grid model to generate facial animation is high
Therefore, its timeliness and fidelity are not enough

Method used

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  • Rapid generation method for facial animation
  • Rapid generation method for facial animation
  • Rapid generation method for facial animation

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Embodiment Construction

[0026] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0027] This embodiment includes the following steps:

[0028] 1. Face feature point detection

[0029] In this embodiment, 34 facial feature points are used to describe the structural features of the human face, and the definition of the feature points is as follows figure 1 shown. For a front face photo, first use the adaptive machine learning face detection (Adaboost) method to detect the position of the pupil center of the face in the original face picture, and initialize the active shape model (ASM) with the position of the pupil center, by matching Iteratively detect the eyebrows, eyes, nose, mouth and the ...

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Abstract

The invention relates to a rapid generation method for facial animation, belonging to the image processing technical field. The method comprises the following steps: firstly detecting coordinates of a plurality of feature points matched with a grid model face in the original face pictures by virtue of an improved active shape model algorithm; completing fast matching between a grid model and a facial photo according to information of the feature points; performing refinement treatment on the mouth area of the matched grid model; and describing a basic facial mouth shape and expression change via facial animation parameters and driving the grid model by a parameter flow, and deforming the refined grid model by a grid deformation method based on a thin plate spline interpolation so as to generate animation. The method can quickly realize replacement of animated characters to generate vivid and natural facial animation.

Description

technical field [0001] The invention relates to a method in the technical field of image processing, in particular to a method for quickly generating human face animation. Background technique [0002] Computer facial animation is an important way of human-computer interaction, which is widely used in virtual reality, film and television entertainment, auxiliary teaching and other fields. 3D face animation has shortened the distance between humans and computers, but 3D face reconstruction is still a difficult research area in the computer field. Rich 3D information depends on complex calculations, while the information provided by simple 2D facial animation can basically meet people's visual needs. Parameter control and data drive are the two main implementation methods of facial animation. [0003] After searching the prior art, it is found that based on data-driven methods (such as Noh, J.Y., Neumann, U. (2000) Talking Faces (talking face). Proceedings of IEEE Internatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/70G06T17/20G06T7/00
Inventor 葛美玲姚莉秀李鹃杨杰
Owner SHANGHAI JIAO TONG UNIV
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