Real-time motion synthesis method based on fast inverse kinematics

Abstract

The invention relates to a real-time motion synthesis method based on fast inverse kinematics. The method comprises the following steps of: firstly performing analysis on the current motion driving a virtual character, performing segmentation by taking the step length as unit and simultaneously extracting key joint points so as to identify the intent of an operator, which is reflected by motion data; then adjusting data of the key joint points by utilizing a fast inverse kinematics algorithm according to striding information, namely change information of a virtual environment, which is set by a user, and simultaneously performing analysis and adjustment on the balance state of the virtual character according to the related theory of human body balance control in biomechanics; and finally using a data smoothing method based on a geometric method for data smoothing, and enabling the motion of the virtual character to be sufficient to complete the interaction with the virtual environment. According to the real-time motion synthesis method, an algorithm is finally configured onto a PC (personal computer) and a PDA (personal digital assistant) in the server-client mode, thereby interaction control over the motion of the virtual character by a terminal user on mobile equipment is realized.

Description

Technical field [0001] The invention belongs to the field of computer virtual reality technology, and particularly relates to the field of motion control and human-computer interaction in computer animation technology. Background technique [0002] With the continuous development of virtual reality technology, real-time virtual character motion control technology has been widely used in more and more fields such as animation, games, and virtual reality systems. For virtual character motion control technology, how to make the virtual character adjust the current motion according to the characteristics of the virtual environment in real time so as to complete the interaction with the virtual environment has always been a hot research topic. The physical model-based motion synthesis method has attracted much attention recently. Its biggest advantage is that it does not use motion capture data and can generate various interactive actions relatively naturally. Its limitation is that i...

AI Technical Summary

Problems solved by technology

[0003] For the use of inverse kinematics method combined with motion data to interactively control the movement of virtual characters, there are three main issues: one is to adjust which data at what time; the other is how to adjust the data in real time and maintain balance, Make the adjusted movement natural while maintaining the style of the original movement; the third is how to achieve a natural and smooth transition between data after adjustment

[0005] The advantages of the present invention are: to overcome the deficiencies of the prior art, to propose a step size segmentation algorithm, and to provide an analysis method for the key joint points involved in the interactive action of the motion process, and to retain the starting point when the interactive action is made. The key joint points play a role in dimensionality reduction; at the same time, it overcomes the shortcomings of the existing inverse kinematics algorithm itself, such as slow convergence speed and non-unique solution results, by adaptively adjusting the convergence step size and combining multi-threading technology to achieve fast inverse kinematics algorithm

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