一个虚拟手原型的实现

以５ＤＴ 公司生产的数据手套作为手势输入设备，开发了一个虚拟手原型．它以手的运动学模型为基础，采用层次结构法构造手的几何模型，极大地方便了虚拟手的图形显示和实时更新的实现．根据人手的运动约束关系得到各关节弯曲角度的相对比例关系，就能从数据手套得到的７ 个传感数据获得整个手的运动情况，并用静态碰撞检测法处理虚拟手与其他物体的碰撞检测，在运行期间不断地对用户手势进行手势映射计算找到最匹配的手势，执行与该手势对应的动作．本原型简单易行，便于增加手势，最后给出了实现结果．

Implementation of a Virtual Hand Prototype

A virtual hand prototype was developed by using the data glove made by 5DT as the input device of user's hand gesture.Based on the kinematics model of hand,the geometric model of hand was constructed by using hierarchical method,which greatly facilitates the implementation of graphical display and real time update of vurtual hand.According to the motion constraints applied on the hand,the relative proportional relationship of flexion angle of joints is deduced,thus the whole hand gesture can be obtained through the seven sensor data gotten from the data glove.The static collision detecting method is adopted to deal with the collision between the hand and other objects,the gasture mapping calculation is continuously run for the user hand gesture to find the most matching pre defined gesture,and execute the corresponding action.This prototype is easy to implement and more gestures can be added conveniently.Finally,the implementation result was given.