Flicker assessment of low-to-medium frame-rate binary video halftones

Rehman, Hamood-Ur; Evans, Brian L.

doi:10.1109/ssiai.2010.5483886

Cited by 1 publication

(3 citation statements)

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“…Spatial artifacts in image halftones have received quite a bit of attention in the halftoning literature [8]- [20]. Two temporal artifacts commonly observed in medium frame-rate binary video halftones are flicker, and dirty-window-effect (DWE) [1], [21]. Flicker in binary video halftones has been discussed in [1], [3]- [6], [21].…”

Section: Introductionmentioning

confidence: 99%

“…Two temporal artifacts commonly observed in medium frame-rate binary video halftones are flicker, and dirty-window-effect (DWE) [1], [21]. Flicker in binary video halftones has been discussed in [1], [3]- [6], [21]. DWE in binary video halftones has been discussed in [1], [2].…”

Section: Introductionmentioning

confidence: 99%

“…If binary pixel patterns also change in regions where there is no change of content, then flicker might be observed [1], [21]. Too many changes in binary pixel values between successive halftone frames can cause perception of flicker.…”

Section: Introductionmentioning

confidence: 99%

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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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