Analysis of the microstructures ('rosettes') in the superposition of periodic layers

摘要

Superpositions of periodic dot screens are largely used in electronic imaging in the filed of color printing. In such superpo- sitions the interaction between the superposed layers may cause new structures to appear which did not exist in any of the original layers: macrostructures (also known as moire patterns) and micro- structures (also known as rosettes). While macrostructures are not always generated in the superposition (cf. Moire-free superposi- tions), microstructures exist practically in any superposition, except for the most trivial cases.