function?[bdybdx]=backward_gradient（f）;
%?function?[bdxbdy]=backward_gradient（f）;
%??
%???created?on?04/26/2004
%???author:?Chunming?Li
%???email:?li_chunming@hotmail.com
%???Copyright?（c）?2004-2006?by?Chunming?Li
[nrnc]=size（f）;
bdx=zeros（nrnc）;
bdy=zeros（nrnc）;

bdx（2:nr:）=f（2:nr:）-f（1:nr-1:）;
bdy（:2:nc）=f（:2:nc）-f（:1:nc-1）;

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
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?????文件??????10438??2008-12-03?16:19??CV?model?code1\1.bmp

?????文件??????14702??2008-12-03?16:20??CV?model?code1\5.bmp

?????文件????????351??2005-10-08?14:15??CV?model?code1\backward_gradient.m

?????文件???????2879??2009-03-26?19:20??CV?model?code1\brain.jpg

?????文件????????791??2005-10-08?14:02??CV?model?code1\curvature.m

?????文件???????1847??2013-07-24?16:42??CV?model?code1\demo_cv.asv

?????文件???????1926??2013-07-24?17:20??CV?model?code1\demo_cv.m

?????文件??????76078??2008-04-07?20:45??CV?model?code1\dong.bmp

?????文件???????1701??2013-07-24?16:52??CV?model?code1\EVOLUTION_CV.asv

?????文件???????1706??2013-07-24?16:33??CV?model?code1\EVOLUTION_CV.m

?????文件????????367??2005-10-08?14:15??CV?model?code1\forward_gradient.m

?????文件??????11766??2004-06-09?12:07??CV?model?code1\three.bmp

?????文件??????16434??2004-07-23?20:36??CV?model?code1\twocells.bmp

?????文件??????14286??2005-07-25?15:45??CV?model?code1\vessel.bmp

?????目錄??????????0??2014-08-26?11:22??CV?model?code1

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???????????????155272????????????????????15