三维摄像测量系统测量人体上肢运动的算法研究

The Study on the Algorithm for Calculating Motion Parameters of Human Upper-limb Based on 3-D Camera Measurement System

应用三维摄像测量系统分析人体上肢运动时 ,由于实验噪声的影响 ,按一般旋转矩阵计算方法得到的数据会产生较大的误差。根据旋转矩阵的单位四元数表示形式 ,提出了一种旋转矩阵的正交分解算法 ,提高了计算的准确性和稳定性 ,并在刚体运动和人体上肢关节运动测量实验中得到了验证。

Spin matrixes used in ordinary methods to analyze the motion of the human upper-limb based on 3-D camera measurement system, the results are not satisfactory due to the effects of noise. According to the unit quaternion decomposition of the spin matrix, an orthogonal decomposition algorithm of the spin matrix is put forward,that improves the calculational accuracy and stabilization. And the experimental results to measure the parameters of the rigid body and the upper-limb joints have proved it.