3D face expression control method and system

Abstract

The invention provides a 3D face expression control method and system. The method comprises the first step of creating a standard human head model, setting bones for the standard human head model with a face expression picture as reference and setting the number of the bones in an area format by reference to human muscle structure, the second step of adding a skin to the standard human head model so as to set the weight of each bone, wherein the weight of each bone refers to the range in which the bones influence the standard human head model and the value of influence, and the third step of adjusting the positions, directions and sizes of the bones so as to control the expression of the standard human head model. According to the method, any human head and any human body can be input for combination, the simulation effect on details of a human face is good, the computation complexity is low, operation is simple, and the method has good universality.

Description

technical field [0001] The present invention relates to facial expression animation technology, in particular to a method and system for controlling 3D human facial expressions. Background technique [0002] Expressions are the emotional indicators projected by humans and other animals from the appearance of their bodies. Most of them refer to the state of facial muscles and facial features. Common expressions include anger, disgust, fear, happiness, sadness, and surprise. Through the coordinated movement between facial expressions, the human face stretches the facial skin to make corresponding expressions. Facial expression recognition is playing an increasingly important role in human emotion recognition and human-computer interaction systems. [0003] With the continuous development of 3D data acquisition technology, the acquisition speed of 3D data has increased rapidly. Compared with traditional 2D data, 3D data has higher resolution and contains more useful informatio...

AI Technical Summary

Problems solved by technology

[0004] However, the methods in the prior art do not take into account that the deep-seated reason for the generation of facial expressions is due to the movement of facial muscles. It is precisely because of the coordinated movement of various facial muscles that different expressions are produced. Therefore, the existing model deformation and other expressions The accuracy of the identification control method is not high, and the production is complicated and requires a lot of time

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