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提出了加门限的滑动窗口一阶矩质心计算方法。在单帧图像内首先计算全局质心,并在全局质心处加上一定大小的窗口,在窗口内再次进行质心计算,判断相邻两次质心是否满足给定质心收敛条件,若不满足将窗口滑动到新的质心位置处,直至完全收敛。在不同的系统条件下,将滑动窗口一阶矩质心计算方法与传统的一阶矩方法在计算精度上进行了仿真及实验的比较。结果表明,滑动窗口一阶矩质心计算方法具有较高的计算精度,适合于高精度自适应光学系统中。
A new method of calculating the first moment of centroid of sliding window with a threshold is proposed. In the single-frame image, the global centroid is first calculated, and a certain size window is added to the global centroid. Centroid calculation is performed again in the window to determine whether the adjacent two centroids satisfy the given centroid convergence condition. If the window is not slid To the new centroid position until completely converged. Under different system conditions, the first-order centroid calculation method of sliding window and the traditional first-moment method are compared in simulation and experiment. The results show that the sliding window first-order moment centroid calculation method has high computational accuracy and is suitable for high-precision adaptive optics system.