function?R=gray2rgb（img1img2）
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%This?Program?converts?a?gray?image?ro?RGB?image?based?on?the?colors?of?the?destination?image.?The?better?the?destination?image?match?with?the?source???%
%gray?image?the?better?the?coloring?will?be.?The?program?takes?some?time??as?the?searching?time?is?high.?You?can?decrease?the?searching?time?by?taking?%
%only?samples?from?the?used?color?image?but?quality?may?decrease.?U?can?use?jittered?sampling?for?improving?running?speed.??????????????????????????????%
%???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????%
%??You?can?use?also?use?the?attahed?test?images?Use?the?following?combinations?for?better?result?nature1.jpg（as?img1）?and?nature2.jpg（as?img2）??or?????%?
%??test1.jpg（as?img1）?and?test2.jpg?（as?img2）
%???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????%
%???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????%
%?Usage?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????%
%?gray2rgb（‘nature1.jpg‘‘nature2.jpg‘）;??
%?
%???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????%
%???????????????Authors?:?Jeny?Rajan????????????????????????????????????????????????????????????????????????????????????????????????????????????????????%
%?????????????????????????Chandrashekar?P.S?????????????????????????????????????????????????????????????????????????????????????????????????????????????%?????????????????????????????????????
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%????????????????????

%?img1?-?Source?Image??（gray?image）????????????????????????????????????????????????????????????????????????????????????????????????????????
%?img2?-?Selected?color?image?for?coloring?the?gray?image.?
tic
clc;
warning?off;
imt=imread（img1）;
ims=imread（img2）;
[sx?sy?sz]=size（imt）;
[tx?ty?tz]=size（ims）;
if?sz~=1
????imt=rgb2gray（imt）;
end
if?tz~=3
????disp?（‘img2?must?be?a?color?image?（not?indexed）‘）;
else
????imt（::2）=imt（::1）;
????imt（::3）=imt（::1）;
???
%?Converting?to?ycbcr?color?space
????nspace1=rgb2ycbcr（ims）;
????nspace2=?rgb2ycbcr（imt）;

????ms=double（nspace1（::1））;
????mt=double（nspace2（::1））;
????m1=max（max（ms））;
????m2=min（min（ms））;
????m3=max（max（mt））;
????m4=min（min（mt））;
????d1=m1-m2;
????d2=m3-m4;
%?Normalization
????dx1=ms;
????dx2

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????3721??2005-08-09?11:03??gray2rgb.m
?????文件???????15994??2005-08-04?11:18??nature2.jpg
?????文件????????9730??2005-08-04?11:19??nature1.jpg
?????文件???????15141??2005-08-09?11:00??test2.jpg
?????文件???????23938??2005-08-09?11:00??test1.jpg