PrDecolor_matlabdem​o

Matlab code of PrDecolor

% Distribution code Version 1.0 -- 03/03/2016 by Qiegen Liu
% The code and the algorithm are for non-comercial use only.
% Copyright 2017, Department of Electronic Information Engineering, Nanchang University.
% The current version is not optimized.
% The Code is created based on the method described in the following paper
% [1] "Parametrically ratio-based method for efficient contrast-preserving decolorization",
% by Jiaojiao Xiong, Hongyang Lu, Qiegen Liu and Xiaoling Xu
% Multimedia Tools and Applications, 2017, pp. 1-25.
% https://link.springer.com/article/10.1007/s11042-017-5143-6
clear all;close all;

%input image
Im = im2double(imread('15.png'));

%process image
gIm1 = rgb2gray(Im);
mu = 50; order = 2; Lpp = .015;maxIter = 50;
gIm2 = PrDecolor(Im,mu,Lpp,order,maxIter);

%display image
figure(2000), imshow([Im,repmat([gIm1,gIm2],[1,1,3])]);