At present, the modeling methods of multi-rigid-body system can be concluded to two kinds: Absolute coordinate method and relative coordinate method.
目前，多刚体系统的建模方法可归纳为绝对坐标法和相对坐标法两类。
Have studied the dynamics Lagrange method of many rigid body more systematically, namely the many rigid body dynamics modeling method to adopt relative coordinate.
比较系统地学习了多刚体动力学的拉格朗日方法，即采用相对坐标的多刚体动力学建模方法。
Because the calibration method directly optimizes the camera rotation angles relative to the world coordinate system, it ensures the orthonormal constraints as well as the precise solutions.
该标定方案直接优化摄像机相对于世界坐标系的旋转角度，因此能够在获得精确解的同时，保证旋转矩阵的正交约束条件。
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