Method for extracting binary graph outline clockwise

The invention discloses a method for extracting a binary graph outline clockwise, and the method comprises the steps: carrying out the corrosion, expansion and detail repairing of a binary image; eliminating a non-outline part; executing a width-first search program of a residual error image, and obtaining a closed curve list; outputting a curve queue through a backtracking algorithm; finally carrying out the curved queue adjustment, and obtaining the binary graph outline extracted clockwise. According to the invention, the binary graph and image can be given freely, and the coordinates of thepixel points arranged clockwise can be directly inputted into computer-aided design software, and the software can reconstruct the designed outline of a part, thereby improving the part design efficiency. There is hardly manual intervention in an algorithm execution process, and a binary graph can be generated through other software or algorithms, thereby enabling the method to be a bridge for connecting different algori