Patent ID: 11872834
Assignee: KOENIG & BAUER BANKNOTE SOLUTIONS SA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 9:
10. A method of designing a printed image in a security feature, the security feature comprising an array of optical elements overlaying the printed image, wherein the printed image comprises a two dimensional matrix of rows and columns of pixels, the method comprising:
calculating for each row and column at least one drift value, wherein the drift value for a pixel is equal to the difference between an actual position for said pixel and the desired position for said pixel;
determining, based on said at least one drift value, one or more locations in the printed image to remove a pixel from the printed image and/or to add a pixel to the printed image; and
adding or removing at least one pixel at the one or more locations;
wherein each optical element is associated with a group of pixels,
wherein each of the one or more locations is selected from a group of pixels which contains a pixel having a drift value associated with a specified drift value.