ABSTRACT
Lenticular screening refers to a print technology where multiple images are spatially multiplexed and then printed onto the flat side of a plastic, lenticular lens array such that only a single image is visible when viewed from any particular incident angle. With regards to halftoning, lenticular imaging creates significant obstacles because the lenticular lenses effectively reduce the apparent print resolution along one dimension from the native, symmetric resolution of the printer to the assymetric resolution of the lens array. In the case of non-lenticular lens arrays where the spatial multiplexing of pixels from multiple component images leads to an arbitrary distribution, there needs to be a means by which to properly distribute error from previously processed pixels. Pixels in the halftone image will, therefore, be correlated when the corresponding pixels are statistically independent in the continuous-tone, composite image. In traditional halftoning, the printer artifacts can be compensated for by adjusting the gray-levels of the continuous-tone original prior to halftoning.
