Title :
Conditions for Color Misregistration Sensitivity in Clustered-dot Halftones
Author :
Oztan, Basak ; Sharma, Gaurav ; Loce, Robert P.
Author_Institution :
Rochester Univ., Rochester
fDate :
Sept. 16 2007-Oct. 19 2007
Abstract :
Misregistration between the color separations of a printed image, which is often inevitable, can cause objectionable color shifts in average color. We analyze the impact of inter-separation misregistration on clustered-dot halftones using Fourier analysis in a lattice framework. Our analysis provides a complete characterization of the conditions under which the average color is invariant to displacement misregistration. In addition to known conditions on colorant spectra and periodicity of the halftones, the work reveals that invariance can also be obtained when these conditions are violated for suitable dot shapes and displacements. Examples for these conditions are included, as is the consideration of traditional halftone configurations.
Keywords :
Fourier analysis; image colour analysis; image registration; Fourier analysis; clustered-dot halftone; color misregistration sensitivity; colorant spectra; printed image color separation; Absorption; Amplitude modulation; Image analysis; Image color analysis; Lattices; Lithography; Printing; Reflectivity; Shape; Signal analysis; Color halftoning; clustered-dot halftones; inter-separation misregistration; lattice theory;
Conference_Titel :
Image Processing, 2007. ICIP 2007. IEEE International Conference on
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-1437-6
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2007.4379994