Calibration procedures and calibration system

The invention relates to a calibration method and a calibration system for at least one projection device (11, 12, 13) for the projection of images on at least one projection (1), wherein the geometrical data of the at least one projection (1) in a computer unit (20) in advance are stored, or, characterized, in that comprise 30) on at least a part of the projection surface (1) is projected, wherein the calibration pattern (30) to one another at least one overlap region (2, 2 ', 2' ') the at least one projection device (11, 12, 13) previously known calibration pattern (a) . b) the calibration pattern (30) of at least one camera device (15) are recorded as calibration image and the data of the calibration image to the computer unit (20) to be transmitted, wherein c) (by means of the computer unit 20) automatically the deviation between the recorded real calibration image and an ideal imaging result of the previously known calibration (30) on the projection (1) as a reference pattern (40) is determined, then (d) from the deviation between real calibration image and the reference pattern 40) comprises a correction transformation (50) is determined so that the combination of the correction transformation (50) with a real projection of images by the at least one projection device (11, 12, 13) in particular in an overlap region (2, 2 ', 2' ') to a small, particularly ...