Robust color-to-gray via nonlinear global mapping

Authors:
Yongjin Kim;Cheolhun Jang;Julien Demouth;Seungyong Lee
Affiliations:
Pohang University of Science and Technology (POSTECH);Pohang University of Science and Technology (POSTECH);Pohang University of Science and Technology (POSTECH);Pohang University of Science and Technology (POSTECH)
Venue:
ACM SIGGRAPH Asia 2009 papers
Year:
2009

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Abstract

This paper presents a fast color-to-gray conversion algorithm which robustly reproduces the visual appearance of a color image in grayscale. The conversion preserves feature discriminability and reasonable color ordering, while respecting the original lightness of colors, by simple optimization of a nonlinear global mapping. Experimental results show that our method produces convincing results for a variety of color images. We further extend the method to temporally coherent color-to-gray video conversion.