自适应阈值激光光斑中心定位方法研究

An Adaptive Threshold Laser Spot Center Positioning Method

针对激光准直法测定高层建筑周日变化中激光光斑中心位置的高精度定位问题,提出了一种适用于小面积比的自适应阈值图像二值化方法。实验表明:该方法与现有的激光光斑中心定位方法相比,具有定位精度高、处理速度快得特点。

A method of laser alignment monitoring diurnal variation of the laser spot center location problem, we propose a smaller area than for the adaptive threshold image binary method, and then extract the laser binary image edge, use least-squares ellipse fitting to determine the center coordinates of the laser spot. By this method the experimental data with the existing methods for positioning the laser spot center compared and the results show that the proposed method has good accuracy and high processing efficiency of the time.