Analysis of ordered dither for arbitrary sampling lattices and screen periodicities

Rao, Thella Babu; Arce, Gonzalo R.; Allebach, Jan P.

doi:10.1109/29.103099

Cited by 27 publications

(12 citation statements)

References 12 publications

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“…A halftone image h k (x) generated for the k th colorant plane of a constant gray-level contone image can be modeled as the convolution of a planar lattice denoted by Λ k and a binary halftone spot function denoted by s k (x) [10], where x = [x, y]…”

Section: Individual Colorant Halftonesmentioning

confidence: 99%

Conditions for Color Misregistration Sensitivity in Clustered-dot Halftones

Oztan

Sharma

Loce

2007

2007 IEEE International Conference on Image Processing

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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.

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Section: Individual Colorant Halftonesmentioning

confidence: 99%

Conditions for Color Misregistration Sensitivity in Clustered-dot Halftones

Oztan

Sharma

Loce

2007

2007 IEEE International Conference on Image Processing

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“…A halftone image h k ͑x͒ generated for the k'th colorant plane of a constant gray-level contone image can be modeled as the convolution of a planar lattice ⌳ k and a binary halftone spot function s k ͑x͒, 20,21 where x = ͓x , y͔ T represents the spatial coordinates. ⌳ k represents the 2D periodicity of the k'th halftone separation and is mathematically defined as…”

Section: Individual Colorant Halftonesmentioning

confidence: 99%

Misregistration sensitivity in clustered-dot color halftones

Oztan

Sharma

Loce

2008

J. Electron. Imaging

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“…15,16 To incorporate misregistration of separation i the halftone dot function may be displaced by a displacement d = [∆x i , ∆y i ]. In the print, these multiple halftone layers are overlaid producing all possible 2 K super-positions of the K colorants, which are referred to as the Neugebauer primaries.…”

Section: A Framework For Analysis Of Color Halftone Misregistrationmentioning

confidence: 99%

Analysis of misregistration-induced color shifts in the superposition of periodic screens

2006

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We present an analysis and model for evaluation of color shifts in halftone printing caused by inter-separation misregistration for periodic clustered dot halftones. Using a lattice framework, we present intuitive analysis that demonstrates conditions under which the average color is asymptotically invariant under inter-separation misregistration. Combining the framework with an analytic representation for the halftone dots, we develop a hybrid analytical-numerical model for quantitatively estimating color shifts as a function of inter-separation misregistration. The model is compared against experimental data for a xerographic printer.

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Analysis of ordered dither for arbitrary sampling lattices and screen periodicities

Cited by 27 publications

References 12 publications

Conditions for Color Misregistration Sensitivity in Clustered-dot Halftones

Conditions for Color Misregistration Sensitivity in Clustered-dot Halftones

Misregistration sensitivity in clustered-dot color halftones

Analysis of misregistration-induced color shifts in the superposition of periodic screens

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