A Variational Approach for Image Decolorization by Variance Maximization
A Variational Approach for Image Decolorization by Variance Maximization
复制标题
方差最大化图像去色的变分方法
DOI:
10.1137/130935197
复制
发表时间:
2014-05
影响因子:
2.1
通讯作者:
Ng, Michael K.
中科院分区:
文献类型:
--
作者:
Jin, Zhengmeng;Li, Fang;Ng, Michael K.
Color-to-grayscale conversion is the process used to convert a color image to a grayscale one, which is a basic tool in digital printing, photograph rendering, and single-channel image processing. The main aim of this paper is to propose a variational approach for image decolorization by variance maximization. Our idea is to use an energy functional to determine local transformations for combining red, green, and blue channel pixel values together by maximizing the local variance of the output grayscale image and preserving the brightness of the input color image. In order to minimize the differences among the local transformations at nearby pixel locations, the total variation regularization of the transformation is incorporated into the functional for the decolorization process. The existence and uniqueness of the minimizer of the variational model can be shown. We also present an effective algorithm for solving the variational model numerically, and show the convergence of the algorithm. Experimental r...
登录
查看更多内容
DOI:
10.1145/2407746.2407780
发表时间:
2012-11
期刊:
SIGGRAPH Asia 2012 Technical Briefs
影响因子:
--
作者:
Cewu Lu;Li Xu;Jiaya Jia
通讯作者:
Cewu Lu;Li Xu;Jiaya Jia
DOI:
10.2307/2003862
发表时间:
1961-11
期刊:
--
影响因子:
--
作者:
R. Varga;J. Gillis
通讯作者:
R. Varga;J. Gillis
DOI:
--
发表时间:
1982
期刊:
--
影响因子:
--
作者:
G. Wyszecki
通讯作者:
G. Wyszecki
影响因子:
2.7
作者:
ECKSTEIN, J;BERTSEKAS, DP
通讯作者:
BERTSEKAS, DP
影响因子:
2.5
作者:
Martin Čadík
通讯作者:
Martin Čadík