This algorithm is to work out the correction table by using the theoretical data to contrast with the real data of the corresponding points in laser beams so as to correct the pillow - shaped distortion and other errors in terms of the interpolation algorithm 该算法用理论数据与激光束在相应点的实际数据进行比对,制成校正表,按插值算法校正实际的枕形畸变及其它误差。