Comparative evaluation of spectral transforms for multispectral image coding in terms of colnr degradation

Yuri Murakami, Hiroyuki Manabe, Takashi Obi, Masahiro Yamaguchi, Nagaaki Ohyama

研究成果: Article

2 引用 (Scopus)

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Recently, multispectral images have been utilized for high fidelity color reproduction through visual telecommunication systems and its compression schemes have been required. However multispectral image coding considering color degradation has not been established. This article presents a comparison of four spectral transforms presented before to find out which transform is more suitable to a spectral decorrelation scheme in transform coding of multispectral images. Transforms dealt with in this paper are Karhunen-Loeve transform (KLT), weighted KLT (WKLT), one mode analysis (OMA) and a transform realizing compatibility to the conventional color systems, latter three of which are designed to represent spectral reflectance functions with small number of coefficients having small colorimetric errors. Through the theoretical and experimental comparisons, it is found that WKLT and OMA reduced colorimetric error compared to the others, where OMA is suitable when the rendering illuminations in the color reproduction can be assumed in advance and WKLT is applicable to other situations.

元の言語English
ページ(範囲)76-81
ページ数6
ジャーナルOptical Review
11
発行部数2
出版物ステータスPublished - 2004 1 1
外部発表Yes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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