Abstract: The present disclosure generally relates to printed structures and methods for generating the same. The printed structure includes a first surface including a first ink type arranged in a first image and a second surface at least partially aligned with at least a portion of the first surface, the second surface including a second type of ink arranged in a second image. The first and second surfaces are physically separated from one another, the first image is visible under a first set of light wavelengths and the second image is visible under a second set of light wavelengths.

Abstract: The present disclosure generally relates to printed structures and methods for generating the same. The printed structure includes a first surface including a first ink type arranged in a first image and a second surface at least partially aligned with at least a portion of the first surface, the second surface including a second type of ink arranged in a second image. The first and second surfaces are physically separated from one another, the first image is visible under a first set of light wavelengths and the second image is visible under a second set of light wavelengths.

Abstract: A method is provided for combining two source images in a relief image. Structural elements are applied that allow a first image to be observed in a first viewing direction and a second image in a second viewing direction. The method reduces a ghosting effect by a) printing a test relief image wherein the two source images comprise patches with a number of basic colors having a predefined amount of colorant; b) measuring for each patch an observed color in each of the viewing directions; c) scaling the source images such that an image element matches a size of a structural element in the relief image; d) selecting a structural element from the test relief image, wherefore the color differences between the image elements of the scaled source images and the patch color becomes minimal, and e) composing a relief image from the selected structural elements.

Abstract: A method is provided for combining two source images in a relief image with structural elements having at least two principle surface orientations, such that a first image is observed in a first viewing direction and a second image is observed in a second viewing direction.