Inverse Halftoning of Digital Color Image using Look-Up Table and Vector Adaptive Filter 


Vol. 34,  No. 1, pp. 72-80, Jan.  2009


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  Abstract

Look-up table based inverse halftoning from the digital color halftone image is proposed in this paper, which uses vector adaptive filter for the nonexisting patterns in the table. Halftone image is obtained from a continuous-tone image, which can be restored into continuous one from the digital binary image by way of inverse halftoning method. Look-up table based method usually processes fast and has even performances over the various halftoning. The numbers of pixels in the pattern of table and the method how to define the table elements for each R, G, B channels can effect largely for its performance. The proposed method uses 16 pixels in the table considering the diversity of the expressions from their patterns and with memory size as well. This also proposed how to combine R, G, B channels into one. Experimental results showed the better performance in the expression of colors, better color restoration and the short processing time compared with the conventional ones.

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  Cite this article

[IEEE Style]

C. Kim and T. Yi, "Inverse Halftoning of Digital Color Image using Look-Up Table and Vector Adaptive Filter," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 1, pp. 72-80, 2009. DOI: .

[ACM Style]

Chansu Kim and Taihong Yi. 2009. Inverse Halftoning of Digital Color Image using Look-Up Table and Vector Adaptive Filter. The Journal of Korean Institute of Communications and Information Sciences, 34, 1, (2009), 72-80. DOI: .

[KICS Style]

Chansu Kim and Taihong Yi, "Inverse Halftoning of Digital Color Image using Look-Up Table and Vector Adaptive Filter," The Journal of Korean Institute of Communications and Information Sciences, vol. 34, no. 1, pp. 72-80, 1. 2009.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880