Generation method of image distortion correction data in two-dimensional galvanometer scanner

The invention relates to a generation method of image distortion correction data in a two-dimensional galvanometer scanner. A correction template provided with (2N+1)2 sampling points is included, and N is natural number. The method comprises the steps of: (1), setting a scanning range and points of the correction template in a software program, wherein a standard graph formed by all sampling points on the correction template is consistent with the scanning range, coordinate values of the sampling points on the correction template are computed according to the scanning range, the computed coordinate values of the sampling points are used as data before being corrected to be stored; (2), scanning the sampling points on the correction plate, controlling a moving light beam through the software program to enable the light beam to be coincided with the sampling points on the correction template, recording coordinate values of the scanned sampling points to be used as corrected data of the sampling points; and (3)