Image ghosting reduction in lenticular relief prints

摘要

Commonly known lenticular prints use a lens-like system superimposed on a standard 2D print to control the light sent into each direction. Thanks to our 2.5D or relief printing system, we are capable of creating a lenticular effect embedded directly on the prints that does not require the use of a system of lenses. On a zigzag-shaped surface composed of continuous small triangles two source images are interlaced and printed on the sides of the triangular structures, each side corresponding to one of the two intended views. The effect of crosstalk or ghosting is often encountered in lenticular prints. Ghosting occurs when some parts of one source image remain visible for the illumination or viewing direction corresponding to the other source image. In this work, we use an image-content-driven technique that identifies the regions in the source images that are prone to cause ghosting for a given set of viewing angles. For the purpose of eliminating this artefact, a model of the ghosting effect appearance is implemented and used for compensation. We have observed improvements in the quality of the lenticular effect, however the impact on the quality of the prints still needs to be evaluated.