Hand motion three-dimensional simulation method based on dual quaternion

Abstract

The invention provides a hand motion three-dimensional simulation method based on dual quaternion. The hand motion three-dimensional simulation method comprises the following steps of: (1) inputting a virtual hand grid model for modeling and a motion skeleton model corresponding to the virtual hand grid model; (2) determining an initial position of each vertex in the virtual hand grid model and normal of each vertex; (3) calculating dual quaternion of each joint point in the motion skeleton model; (4) aiming at each vertex in the virtual hand grid model, searching the dual quaternion corresponding to the skeleton which is bound with each vertex and assigning respective weight value, and then calculating the dual quaternion after linear mixture; (5) unitizing the double quaternion after linear mixture; and (6) calculating vertex positions and normals after deformation of all the vertices for hand three-dimensional simulation. The hand motion three-dimensional simulation method recalculates the positions and normals after the deformation of the vertices for hand three-dimensional simulation by calculating and unitizing the double quaternion after the linear mixture so as to enable a virtual hand to have stronger motion and visual reality sense and avoid the phenomena such as wrapping with candy wrappers and collapse.

Description

Technical field [0001] The invention relates to the technical field of virtual hand movement modeling, in particular to a three-dimensional simulation method of hand movement based on double quaternions. Background technique [0002] Virtual hand technology is an important part of virtual reality technology, it is a new type of human-computer interaction technology. In virtual hand technology, human hands can directly manipulate objects in the virtual environment through virtual hands. Compared with the simple manipulation in the traditional method, which is driven by keyboard and mouse, virtual hand technology can directly apply the experience and skills acquired in daily life to human-computer interaction, greatly improving the naturalness and efficiency of human-computer interaction It also enables computers to complete more complex tasks. In the interaction between humans and the virtual environment, the hand is the most flexible, most complex, and most important organ. In ...

AI Technical Summary

Problems solved by technology

The traditional skinning algorithm is easy to produce "sugar wrapping", "collapse" and other phenomena, and if the problem of space transformation or rotation center is not handled well, it will also cause faults, splitting, elongation and other phenomena. How to solve the problem under the premise of real-time Simulating realistic virtual hand movement is an important topic in the research of virtual hand technology

[0004] The shape and organizational structure of the human hand are relatively complex, and there are many methods for modeling the mesh model of the virtual hand. For example, simple geometric shapes such as cylinders and balls are used to model the virtual hand. Each finger segment and joint of the hand is a rigid body. The fingers are modeled with cylinders, and the cylinders are connected by spherical joints. The simulation effect of this method is relatively poor, and it is very different from the real human hand.

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