Robust Color-to-gray via Nonlinear Global Mapping

Yongjin Kim
POSTECH

Cheolhun Jang
POSTECH

Julien Demouth
POSTECH

Seungyong Lee
POSTECH

ACM Transactions on Graphics (ACM SIGGRAPH Asia 2009), vol 28, no. 5

Input

CIE Y

Our method

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.

BibTex

@article{kim09_c2g,
  author = {Yongjin Kim and Cheolhun Jang and Julien Demouth and Seungyong Lee},
  title = {Robust Color-to-gray via Nonlinear Global Mapping},
  journal = {ACM Transactions on Graphics (SIGGRAPH ASIA 2009)},
  year = {2009},
  month = dec,
  volume = {28},
  number = {5}
}