Disclosed herein is a Moire-free color halftone configuration for
clustered dots. Unlike conventional methods, the disclosed method
produces periodic hexagon rosettes of identical shapes. These exemplary
hexagon rosettes have three fundamental spatial frequencies exactly equal
to half of the fundamental frequency of the three halftone screens. The
resultant halftone outputs are truly Moire free, as all the fundamentals
and harmonic frequencies are multiples of and thus higher in frequency
than the rosette fundamental frequency. The halftone outputs resulting
from the employment of the exemplary rosette design methodology provided
herein, are also robust to the typical misregistration among color
separations commonly found in color systems.