To do that, we first summarize the principles of camera calibration from single image and classify several of such calibration techniques, then give an implementation algorithm.

The features of new correction machine for aluminum profiles are that its correction wheel can be adjusted up and down,left and right and has torsion function,which can be applied to the profiles with diversified sections;and the positions and numbers of the driving wheels can be adjusted according to the sections of aluminum profiles,meanwhile the replacement is easy.