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Proceedings Paper

Error diffusion algorithm for gray level representation on a plasma display panel
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Paper Abstract

The CRT has the nonlinear light intensity response to the input digital values. However, light intensity curve of the PDP is close to linear within the normal operating range. Thus, in order to generate images on the PDP being equivalent to those on the CRT, the modification on the input digital values should be made. This process is often called as inverse gamma correction. When the inverse gamma correction is applied, the number of displayable gray levels in dark areas is considerably reduced. It would result in false contours that reduce the quality of displayed images. Error diffusion can be applied to solve this problem. However, the luminance variation between two consecutive integer values is much greater than 'just noticeable difference' of human vision system. It makes minor pixels appear as isolated dots. In this paper, an error diffusion algorithm is proposed to reduce the luminance variation. Also, three algorithms called in this paper as 'Fraction doubling', 'Minor pixel separation' and 'Within-frame minor pixel allocation' are proposed.

Paper Details

Date Published: 17 January 2005
PDF: 10 pages
Proc. SPIE 5667, Color Imaging X: Processing, Hardcopy, and Applications, (17 January 2005); doi: 10.1117/12.587452
Show Author Affiliations
Yu Hoon Kim, Inha Univ. (South Korea)
Choon-Woo Kim, Inha Univ. (South Korea)


Published in SPIE Proceedings Vol. 5667:
Color Imaging X: Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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