&lt;title&gt;Void-and-cluster method for dither array generation&lt;/title&gt;

Ulichney, Robert

doi:10.1117/12.152707

Cited by 159 publications

(94 citation statements)

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“…Yet another solution consists in building threshold matrices such as Ulichney's "void-and-cluster" technique [24], or Mitsa and Parker's "blue noise mask" [16]. In both cases, a threshold matrix is built to be used with standard dithering, in such a way that its output mimics the behavior of a typical error-diffusion having "blue noise" spectrum.…”

Section: Introductionmentioning

confidence: 99%

A simple and efficient error-diffusion algorithm

Ostromoukhov

2001

Proceedings of the 28th Annual Conference on Computer Graphics and Interactive Techniques

165

131

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In this contribution, we introduce a new error-diffusion scheme that produces higher quality results. The algorithm is faster than the universally used Floyd-Steinberg algorithm, while maintaining its original simplicity. The efficiency of our algorithm is based on a deliberately restricted choice of the distribution coefficients. Its pleasing nearly artifact-free behavior is due to the off-line minimization process applied to the basic algorithm's parameters (distribution coefficients). This minimization brings the Fourier spectra of the selected key intensity levels as close as possible to the corresponding "blue noise" spectra. The continuity of the algorithm's behavior across the full range of intensity levels is achieved thanks to smooth interpolation between the distribution coefficients corresponding to key levels. This algorithm is applicable in a wide range of computer graphics applications, where a color quantization algorithm with good visual properties is needed.

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Section: Introductionmentioning

confidence: 99%

A simple and efficient error-diffusion algorithm

Ostromoukhov

2001

Proceedings of the 28th Annual Conference on Computer Graphics and Interactive Techniques

165

131

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“…In the FIOD method, the first halftone sequence is formed by using ordered-dither technique on each frame independently [1]. For ordered-dither, the threshold array was formed by using a 32x32 void-and-cluster mask [41]. Since FIOD method produces halftones with excessive DWE, for halftone video enhancement, we demonstrate the results of enhancement done on the videos generated using FIOD.…”

Section: Resultsmentioning

confidence: 99%

Alleviating Dirty-Window Effect in Medium Frame-Rate Binary Video Halftones

Rehman

Evans

2012

IEEE Trans. on Image Process.

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Abstract-A video display device having a lower number of bits per pixel than that required by the video to be displayed quantizes the video prior to its display. Halftoning can perform this quantization while attempting to reduce the visibility of certain quantization artifacts. Quantization artifacts are, nevertheless, not eliminated. A temporal artifact known as dirtywindow-effect can be commonly observed in medium framerate binary video halftones. In this paper, we propose video halftone enhancement algorithms to reduce dirty-window-effect. We assess the performance of the proposed algorithms by presenting objective measures for dirty-window-effect in the original and the improved halftone videos. The expected contributions of this paper include three medium frame-rate binary video halftone enhancement algorithms that (1) reduce dirty-windoweffect under a spatial quality constraint, (2) reduce dirty-windoweffect under a spatial quality constraint with reduced complexity, and (3) reduce dirty-window-effect under spatial and temporal quality constraints.Index Terms-video halftoning, temporal artifacts, dirtywindow-effect.

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“…Recently some apIn this section, we present a new ordered dither method, called adaptive ordered dither, that inherits the advantages proaches [3,4] were proposed in the literature that can imof the space-filling curve ordered dither [8] and the stochasprove the quality of ordered dither image. However, like the tic screening dithering method [6].…”

Section: The New Methodsmentioning

confidence: 99%

Adaptive Ordered Dither

Zhang

1997

Graphical Models and Image Processing

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<title>Void-and-cluster method for dither array generation</title>

Cited by 159 publications

References 0 publications

A simple and efficient error-diffusion algorithm

A simple and efficient error-diffusion algorithm

Alleviating Dirty-Window Effect in Medium Frame-Rate Binary Video Halftones

Adaptive Ordered Dither

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