利用投影栅自动识别平面物体空间位置的方法

AN AUTOMATICAL LASER RANGE FINDER METHOD OF PLANE OBJECT BASED ON GRATING

根据正弦投影栅成像和光学三角法测量的原理,提出了一种利用投影栅自动识别物体空间位置的方法.使用CCD摄像机采集一幅参考平面的图像和一幅待测平面物面的图像,利用参考平面图像对测量系统进行标定.根据空间频率和空间距离的关系,由两幅图像可确定物体的空间位置.笔者介绍了测量的原理并给出了实验结果.实验结果表明,该方法可实现平面物体空间位置的快速自动化识别,有自动化程度高、计算速度快、对环境要求低的优点.

Based on the principle of Sinusoidal Projection Grating and Triangulation, a new laser range finder method is presented in this paper. Two images on referenceplane and object plane are captured by CCD. The measurement system is calibrated by the reference planar image. Then the range of the object can be obtained by means of the relationship between spatial frequency and spatial distance. This paper introduces experiment principle and results. This method has a high level of automation and computing speed. And it also has a low demand for information and environment. Experiments indicate that the range of the object can be recognized fast and automatically.