将相位技术及条纹分析技术引入到光学三维坐标测量中,制作了手持相位标靶。采用这种标靶,利用视觉测量技术可以对待测物体上的任意一个可接触点进行直接测量。利用相位技术及条纹分析技术的全场分析方法,计算出了测头在标靶坐标系下的坐标,提出了标靶特征点到测头距离的计算公式;采用手持相位标靶进行测量时,提出了对测量点的三维坐标获取的计算公式;并对测量点的三维坐标值以及对测量点偏移的距离进行了误差分析。实验得到了比较准确的测量结果,证明了分析方法的正确性。

By introducing phase and fringe technique to optical 3-D object measurement,handheld phase target is proposed. With vision measurment technology,any contacted point of measure object can be measured directly by the target. In addition,the distance between control points of handheld phase target and measurement point ,and the coordinates of the probe of target coordinate system can be obtained by adopting phase technique and the full optical field fringes analysis. In the same way,3-D coordinate of measurement point on the object can be calculated accurately. Error analysis about 3-D coordinate of measured points is done and the corresponding distance excursion is also obtained. The accurate measurement result can be obtained in the experiments so that the analysis is proved to be right.