Invertible Color-to-Monochrome Conversion Based on Color Quantization with Lightness Constraint

Go TANAKA  Noriaki SUETAKE  Eiji UCHINO  

Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E95-A   No.11   pp.2093-2097
Publication Date: 2012/11/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E95.A.2093
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Image
Keyword: 
color-to-monochrome conversion,  color quantization,  k-means,  color image,  recoloring,  

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Summary: 
A method obtaining a monochrome image which can rebuild colors is proposed. In this method, colors in an input image are quantized under a lightness constraint and a palette, which represents relationship between quantized colors and gray-levels, is generated. Using the palette, an output monochrome image is obtained. Experiments show that the proposed method obtains good monochrome and rebuilt color images.