TY - JOUR
AU1 - Lee, Changhyung
AB - The hybrid screen is a halftoning method that generates stochastic dispersed dot textures in highlights and periodic clustered dot textures in midtones. Each tone level is sequentially designed from highlight to midtone by applying an iterative halftoning algorithm such as direct binary search (DBS). By allowing random seeding and swap-only DBS in a predefined core region within each microcell, we design each level while satisfying the stacking constraint and guaranteeing a smooth transition between different levels. This paper focuses on a number of enhancements to the original hybrid screen and their impacts on print quality. These include analytical determination of the human visual system filter in the spatial domain for DBS, multilevel screen design either by extending a bilevel screen or by directly generating a multilevel screen on the high resolution grid. Our results show that the multilevel screen design method has a direct impact on hybrid screen design parameters such as the optimal core size. We also extend the whole design process to color by jointly optimizing the color screens using color DBS. Our results demonstrate a significant improvement in the highlights over halftones generated by independently designed screen.
TI - The hybrid screen: improving the breed
JF - Proceedings of SPIE
DO - 10.1117/12.711183
DA - 2007-01-28
UR - https://www.deepdyve.com/lp/spie/the-hybrid-screen-improving-the-breed-RT70vkU7ea
SP - 649318
EP - 649318-12
VL - 6493
IS - 1
DP - DeepDyve
ER -