function?M?=?crop（Mnc）

%?crop?-?crop?an?image?to?reduce?its?size?修剪圖像
%
%???M?=?crop（Mnc）;
%
%???n?is?the?new?size?of?the?image
%???c?is?the?center?of?the?grop
%
%???Copyright?（c）?2007?Gabriel?Peyr?

n0?=?size（M）;??????????????%n0=[p0?q0]p0、q0是圖像M的兩個維度

if?nargin<2????????????????%只給出了參數M
????n?=?round（?n0（1:2）/2?）;%取p0/2和q0/2最接近的整數p、q，n=[p?q]，即將圖像變為原來的1/4
end
if?nargin<3?||?isempty（c）??%未給出c
????c?=?round（?n0（1:2）/2?）;%c=[p?q]處為原圖像的的中心，也將其作為新圖像的中心
end

if?isempty（n）??????????????%只給出了參數M和c，是不允許的
????return;
end

if?length（n）==1????????????%將使用函數時，給出的n和c擴展成數組，表示兩維的大小
????n?=?[n?n];
end
if?length（c）==1
????c?=?[c?c];
end

c?=?round（c）;


selx?=?c（1）-ceil（n（1）/2）+1:c（1）+floor（n（1）/2）;??%修剪后，第一維范圍
sely?=?c（2）-ceil（n（2）/2）+1:c（2）+floor（n（2）/2）;??%修剪后，第二維范圍

%當各維元素個數小于1，或大于原圖像時，將其設置為無效
se

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????3240??2011-06-10?14:48??MCA\testMCA2metadata.mat

?????文件????????776??2011-05-08?10:32??MCA\MakeList.m

?????文件????????365??2011-05-07?17:12??MCA\mcalabmeta.mat

?????文件????????334??2008-12-24?07:51??MCA\LengthList.m

?????文件????????594??2009-05-19?17:51??MCA\NthList.m

?????文件????????873??2009-05-19?17:48??MCA\FastLA2.m

?????文件???????1484??2009-05-19?17:47??MCA\FastCURVWRAPAnalysis.m

?????文件????????845??2011-05-09?14:40??MCA\fdct_wrapping.m

?????文件?????529920??2009-06-19?20:18??MCA\fdct_wrapping_mex.mexw32

?????文件????????384??2009-06-19?20:18??MCA\fdct_wrapping_c2r.m

?????文件???????1353??2008-12-24?07:51??MCA\FastLDCT2ivAnalysis.m

?????文件???????1471??2008-12-24?07:51??MCA\FastLDCTivAnalysis.m

?????文件????????705??2008-12-24?07:51??MCA\rmaxis.m

?????文件???????1003??2008-12-24?07:51??MCA\FastLS2.m

?????文件???????1422??2008-12-24?07:51??MCA\FastCURVWRAPSynthesis.m

?????文件????????754??2009-06-19?20:18??MCA\ifdct_wrapping.m

?????文件????????317??2009-06-19?20:18??MCA\fdct_wrapping_r2c.m

?????文件?????529920??2009-06-19?20:18??MCA\ifdct_wrapping_mex.mexw32

?????文件???????5068??2002-11-12?15:32??MCA\mrdwt.m

?????文件???????8192??2004-07-28?14:22??MCA\mrdwt.dll

?????文件???????5210??2002-11-12?15:31??MCA\mirdwt.m

?????文件???????8704??2004-07-28?14:22??MCA\mirdwt.dll

?????文件???????1496??2008-12-24?07:51??MCA\FastLDCT2ivSynthesis.m

?????文件???????1298??2008-12-24?07:51??MCA\FastLDCTivSynthesis.m

?????文件????????303??2010-03-15?19:31??MCA\psnr.m

?????文件????????877??2008-12-24?07:51??MCA\FastLDCT2Analysis.m

?????文件???????1043??2008-12-24?07:51??MCA\FastLDCT2Synthesis.m

?????文件????????763??2011-05-08?10:32??MCA\MakeList.asv

?????文件??????12154??2011-05-18?23:10??MCA\MCA2_Bcr.asv

?????文件????????845??2011-05-09?14:39??MCA\fdct_wrapping.asv

............此處省略73個文件信息