基于共面标定参照物的线结构光传感器快速标定方法

A Speedy Method for the Calibration of Line Structured Light Sensor Based on Coplanar Reference Target

根据线结构光传感器的特点,提出了一种线结构光传感器的快速标定方法,利用摄像机投影中心及光条在摄像机像面上的信息,仅需一共面靶标即可实现摄像机与光平面之间位置参数的标定。快速标定方法允许共面靶标在测量空间内自由移动,且不需辅助调整设备,也不存在标定参照物不同平面间的相互遮挡。实验表明,快速标定方法可实现约0.5%的相对测量精度,证明了方案的合理、有效。

Based on the characteristics of line structured light sensor, a speedy method for the calibration was established. With the coplanar reference target, the spacial pose between camera and optical plane can be calibrated by using the camera＇s projective center and the light＇s information in the camera＇s image surface. Without striction to the moving of the coplanar reference target and assistant adjustment equipment, this calibration method can be implemented. This method has decreased the cost of calibration equipment, simplified the calibration procedure, improved calibration efficiency. Experimental results show that, the sensor can attain relative accuracy about 0.5% which indicates the rationality and effectivity of this method.