【摘要】 针对目前增强现实领域尚少有人涉足的运动跟踪注册问题,提出了采用四个彩色标志点的光流场估计运动参数,结合刚体的运动特性以及投影透射模型确定运动物体与摄像机间相对位姿的算法。并把该算法用于以光学透射式头盔显示器为主的增强现实系统中。该系统结构简单、轻便、实用性强、易于实现。一般情况下只需四个平面标志物就可实现运动物体的三维跟踪注册;工作范围大,甚至可以应用到室外的增强现实系统中;数值求解过程是线性过程,误差小,可以满足增强现实系统高精度三维注册的要求。更多还原

【Abstract】 In most of augmented reality systems the real object is static,such as floor,wall and architectures.While re-searchers pay no attention to dynamic object tracking.In order to solve this problem,an algorithm is proposed for esti-mating3D motion parameters of the real object using optical flow of colorful markers,and its application in an aug-mented reality system with optical see-through HMD.According to the motion equation of3D rigid body and the pin-hole model of the camera,It can obtain the position and the orientation between the camera and the dynamic object.The system has a simple structure,requires only a single CCD camera and a few markers with different colors,and yields accurate3D registration results.It can work at long ranges and is applicable to outdoor augmented reality sys-tems.更多还原