通过测量系统，设立在每个椎体上的三个标志点的运动分别投影到光屏，摄像机动态记录，输入计算机图像处理系统。
The movement of three marks, which fixed in vertebrae, were separately projected to light screen of the system, kinematically recorded with video camera, inputted to image processing system.
运用颈椎周围不同肌肉对颈椎作用力的变化，模拟正常活动范围内颈椎前屈、后伸、侧屈、旋转等多种工况。分别计算并得出相应载荷下钩椎关节、小关节应力值。
With the changing of muscular force, the movements such as flexion, extension, lateroversion and rotation were imitated, and the stress was calculated under different loads, respectively.
最后评价脊髓神经功能的恢复，测量并计算颈椎高度的丧失率以及颈椎的屈伸范围、椎间融合率，观察有无并发症发生。
At last, the spinal function of all the patients was evaluated, and the loss rate of cervical body heights and the fusion rate were calculated.
首先，在新视图的图像平面，计算旧可见外壳的边被新光椎切割得到的交点。
First, edges of visual hull model are chopped by viewing cone of the new view.
首先，在新视图的图像平面，计算旧可见外壳的边被新光椎切割得到的交点。
First, edges of visual hull model are chopped by viewing cone of the new view.
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