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????時間???名稱
-----------?---------??----------?-----??----

?????文件????????351??2005-10-08?14:15??code\backward_gradient.m

?????文件????????371??2003-12-22?19:36??code\BoundMirrorEnsure.m

?????文件????????307??2003-12-22?19:36??code\BoundMirrorExpand.m

?????文件?????????90??2003-12-22?19:36??code\BoundMirrorShrink.m

?????文件????????360??2018-11-13?21:24??code\curvature.m

?????文件????????355??2018-11-13?21:28??code\Delta.m

?????文件?????????93??2018-11-13?21:20??code\div.m

?????文件????????225??2018-11-13?20:08??code\edge_detector_g.m

?????文件???????1413??2018-11-14?00:15??code\evolution.m

?????文件????????367??2005-10-08?14:15??code\forward_gradient.m

?????文件????????337??2005-10-08?14:18??code\plotLevelSet.m

?????文件????????588??2005-10-08?14:28??code\sdf2circle.m

?????文件????????160??2018-11-13?22:23??code\sec_der.m

?????文件????????198??2018-11-13?23:33??code\Sec_energy_div.m

?????文件???????1171??2018-11-14?00:15??code\Test_demo.m

?????文件??????11766??2004-06-09?12:07??code\three.bmp

?????文件??????16434??2004-07-23?20:36??code\twocells.bmp

?????文件??????14286??2005-07-25?15:45??code\vessel.bmp

?????目錄??????????0??2018-11-14?00:19??code

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????????????????48872????????????????????19