光斑质心的计算是折射法大气温度梯度测量的关键。提出了一种用于折射法大气温度梯度测量的光斑图像质心算法。 该算法使用了自适应阈值选取,适应性强。实验表明,该光斑图像质心算法实时性强、实现简单,适用于大气温度梯度测量。

The determination of the light spot center of mass is a key step in the refraction based measurement of atmospheric temperature gradient. An algorithm for the calculation of the light spot image’s center of mass is introduced. The calculation is used in the refraction based atmospheric temperature gradient measurement. An adaptive auto thresholding method is used in the algorithm which is suitable for various ambient environments. Experiment shows that the algorithm can be implemented easily and run in real-time; it is suitable to be used in the atmospheric temperature gradient measurement.