function?org=get_angle_w（str）

%參考文獻：D.?Zhang?W.K.?Kong?J.?You?M.?Wong?On-line?palmprint
%identification?IEEE?Trans.?Patt.?Anal.?Mach.?Intell.?25?pp.1041-1050.?2003
%?過程：
%?1.高斯低通濾波，并二值化
%?2.邊緣跟蹤找到兩個指窩的邊界點
%?3.通過計算直線方程找到關鍵點A.B使得其余的邊界點都在直線的一端
%?4.旋轉圖像并分割ROI
org=str;
fs=fspecial（‘gaussian‘[5?5]）;
org=conv2（double（org）fs‘same‘）;
edg=org>28;
edg=medfilt2（edg[77]）;
edg1=edg;
edg=EDGE（uint8（edg）‘sobel‘）;

%?for?i=1:7
%?????edg（i:）=0;???????????%in?case?the?thumb?is?out?of?range?
%?end
?????
edg（1:7:）=0;
edg（:1:25）=0;

%2find?edge?and?make?a?sequence?along?with?the?outline

edg2=edg;
X1=[];
Y1=[];

%?start=1200;???%ahhhi?don‘t?know?how?to?describ?this....
start1=45;??%ahhhi?don‘t?know?how?to?describ?this....
a=find（edg2（start1:）>0）;
X1=[X1?start1

?屬性????????????大小?????日期????時間???名稱
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?????文件????????737??2008-01-04?17:30??get_neigh.m

?????文件???????3488??2008-04-18?16:11??get_angle_polypalm.m

?????文件???????1707??2008-04-18?16:12??roi_palm.m

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?????????????????5932????????????????????3