Color quantization of digital images

Authors:
Xin Zhang;Zuman Song;Yunli Wang;Hui Wang
Affiliations:
Multimedia Research & Development Center, National Univ. of Defense Tech., Changsha, Hunan Province, P.R.C.;School of Computer Science, National Univ. of Defense Tech., Changsha, Hunan Province, P.R.C.;Multimedia Research & Development Center, National Univ. of Defense Tech., Changsha, Hunan Province, P.R.C.;Multimedia Research & Development Center, National Univ. of Defense Tech., Changsha, Hunan Province, P.R.C.
Venue:
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
Year:
2005

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Abstract

A two-stage color quantization method is proposed in this paper. At the first stage, a palette selection scheme suitable to the quantization level requirement is chosen and an initial palette is selected. At the second stage, a fast LBG algorithm is adopted to iteratively refine the palette. Experimental results show that this approach is superior to most of the prevalent methods in terms of quantization distortion measured by the MSE metric.