在论述了几种方式的人体运动捕捉的基础上，介绍了光学运动捕捉的关键技术，包括摄像机标定、标记点跟踪和三维重建技术。
On the basis of discussion of human body motion capture, the key techniques of optical motion capture are introduced, including camera calibration, marker tracking and 3d reconstruction.
分析人体背部曲线，并对座椅靠背曲线进行拟合，确定关键点的约束条件，从而得出更符合人体生理曲线的座椅靠背曲线。
Analyzing the back curve of human body, fitting of the back curve, fixing the constraint conditions, the seat back curve which is more conformed to physiological principle is obtained.
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