function?res?=?grs2rgb（img?map）

%%Convert?grayscale?images?to?RGB?using?specified?colormap.
%	IMG?is?the?grayscale?image.?Must?be?specified?as?a?name?of?the?image?
%	including?the?directory?or?the?matrix.
%	MAP?is?the?M-by-3?matrix?of?colors.
%
%	RES?=?GRS2RGB（IMG）?produces?the?RGB?image?RES?from?the?grayscale?image?IMG?
%	using?the?colormap?HOT?with?64?colors.
%
%	RES?=?GRS2RGB（IMGMAP）?produces?the?RGB?image?RES?from?the?grayscale?image?
%	IMG?using?the?colormap?matrix?MAP.?MAP?must?contain?3?columns?for?Red?
%	Green?and?Blue?components.??
%
%	Example?1:
%	open?‘image.tif‘;	
%	res?=?grs2rgb（image）;
%
%	Example?2:
%	cmap?=?colormap（summer）;
%?	res?=?grs2rgb（‘image.tif‘cmap）;
%
%?	See?also?COLORMAP?HOT
%
%	Written?by?
%	Valeriy?R.?Korostyshevskiy?PhD
%	Georgetown?University?Medical?Center
%	Washington?D.C.
%	December?2006
%
%?	vrk@georgetown.edu

%?Check?the?arguments
if?nargin<1
	error（‘grs2rgb:missingImage‘‘Specify?the?name?or?the?matrix?of?the?image‘）;
end;

if?~exist（‘map‘‘var‘）?||?isempty（map）
	map?=?hot（64）;
end;

[lw]?=?size（map）;

if?w~=3
	error（‘grs2rgb:wrongColormap‘‘Colormap?matrix?must?contain?3?columns‘）;
end;

if?ischar（img）
	a?=?imread（img）;
elseif?isnumeric（img）
	a?=?img;
else
	error（‘grs2rgb:wrongImageFormat‘‘Image?format:?must?be?name?or?matrix‘）;
end;

%?Calculate?the?indices?of?the?colormap?matrix
a?=?double（a）;
a（a==0）?=?1;?%?Needed?to?produce?nonzero?index?of?the?colormap?matrix
ci?=?ceil（l*a/max（a（:）））;?

%?Colors?in?the?new?image
[iliw]?=?size（a）;
r?=?zeros（iliw）;?
g?=?zeros（iliw）;
b?=?zeros（iliw）;
r（:）?=?map（ci1）;
g（:）?=?map（ci2）;
b（:）?=?map（ci3）;

%?New?image
res?=?zeros（iliw3）;
res（::1）?=?r;?
res（::2）?=?g;?
res（::3）?=?b;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????4539??2006-12-09?19:27??grs2rgb.html
?????文件????????1705??2006-12-09?19:48??grs2rgb.m
?????文件????????5027??2006-12-09?19:27??grs2rgbh.png
?????文件???????78995??2006-12-09?19:27??grs2rgbh_01.png
?????文件???????94510??2006-12-09?19:27??grs2rgbh_02.png
?????文件???????81857??2006-12-09?19:27??grs2rgbh_03.png
?????文件????????1344??2009-07-28?15:22??license.txt