Aiming at the problem of multiple rotations in the tilting correction of Data Matrix code,a tilt correction method for distorted 2-D code is proposed in this paper. First,the LoG operator is used to detect the edge of the binary image,and then based on the structural features of the Data Matrix code,the location of the locator Lis quickly determined by the Hough transform,and the Lintersection point is expressed with two vectors. By vector cross product the rotation angle of Data Matrix code is calculated a...