视觉坐标测量中直接光学法透镜光学中心的标定

Direct optical method for calibrating the optical center in vision coordinate measurement

介绍了目前视觉坐标测量系统中摄像机成像中心标定的一般方法 ,即变焦距法、径向准直约束法和直接光学法 ,比较了上述方法的优缺点。详细介绍了直接光学法的原理以及实际标定过程的步骤 ,并进行了实验验证。实验结果表明直接光学法具有精度高、重复性好等优点 。

The paper introduces the methods for calibrating the optical center in vision coordinate measurement-the method of varying focal length, radial alignment method and direct optical method, and compares their characteristics. It describes the principle and calibrating procedures of direct optical method in details and makes some experiments. The results show that direct optical method has the virtues of high accuracy and good repeatability. The experiments also indicate that the calibrating procedures is feasible.