Patent ID: 8259360

Claim:
A method for correcting geometric errors during a transfer of a printing image to a printing material, the method comprising the following steps: setting up at least one master print on which the printing image is based; screening the master print and producing at least one raster bitmap in the form of a matrix with m lines and n columns having elements containing information about a color to be printed; manipulating the raster bitmap by matrix manipulation to compensate for geometric distortions of the printed image on the printing material; defining protected areas in at least one of the master print or the raster bitmap; maintaining at least one of all points or all elements within the protected area unchanged after the matrix manipulations have been carried out; and compensating for the matrix manipulations which would lead to changes in a position of at least one of the points or of the elements within the protected area by second matrix manipulations locally within a partial matrix of the raster bitmap defined by the protected area.