It has widely application prospects and practical significance on the research of 3D human body animation. In this paper,a realization method of 3D human body animation driven by two-dimensional is put forward. The algorithm of key frames abstraction based on dynamic frames is used to build two-dimensional key frames set from two-dimensional videos. Two-dimensional bone model of human body is built on two-dimensional key frames. And the deeply coordinates of joints' characteristic points is obtained according to the pinhole imaging principle and the Pythagorean theorem. Based on these methods,3D data of human body ani-ma-tion is acquired. The experiment result shows that 3D human body animation generated by this method is realistic and low cost,and it makes the generation of motions more real-time. This method can by used in the fields of virtual reality,computer games and 3D video games production.%研究实现三维人体动画具有广泛的应用前景和实用意义,提出了一种二维视频驱动的三维人体动画实现方法.基于动态帧的关键帧提取算法从二维视频中构建了二维关键帧集合；基于二维关键帧构建二维人体骨骼模型；利用小孔成像原理和勾股定理计算得到关节特征点的深度坐标,从而得到了反映人体动画的三维数据.实验结果表明,该方法生成的三维人体动画形象逼真、成本低、提高了运动生成的实时性,能够应用于虚拟现实、计算机游戏、三维视频游戏制作等领域.
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