function?[vectornumber]=extraction（tempnumber）
%?minutia?extraction
%?temp=imread（‘1.bmp‘）;
%?figure（1）
%?imshow（temp）;
[mn]=size（temp）;
newimage=zeros（mn）;%?minutia?map
%?0-black255-white
%?detect?the?points?in?the?eight?neighborhood
%?focus?on?the?center?where?the?image?is?clear

%?count?the?minutiae
minutia=0;

for?i=2+10:m-1-10
????for?j=2+10:n-1-10
????????count=0;
????????if?temp（ij）==1
????????????for?p=1:3
????????????????for?q=1:3
????????????????????if?temp（i-2+pj-2+q）==1
????????????????????????count=count+1;
????????????????????end
????????????????end
????????????end
????????????if?count==2
????????????????newimage（ij）=1;%?the?end?point
????????????????minutia=minutia+1;
????????????????pointvect（minutia:）=[1ij];
????????????elseif?count==4
????????????????newimage（ij）=1;%?the?bifurcate?point
????????????????minutia=minutia+1;
????????????????pointvect（minutia:）=[2ij];
????????????end
????????end
????end
end
%?figure（2）
%?imshow（newimage）

%?calculate?the?weight?of?the?minutiae?by?the?function?nearest
y=nearest（pointvect）;

%?sort?the?pointvect?in?decreasing?order?and?extract?the?first?20?as?feature????????
[junk?rindices]?=?sort（-1*y（:4））;
vector=y（rindices（1:number）:）;
number=minutia;

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

?????文件??????90512??2000-08-25?17:30??database_and_code\101_1.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\101_2.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\101_3.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\101_4.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\101_5.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\101_6.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\101_7.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\101_8.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_1.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_2.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_3.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_4.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_5.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_6.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_7.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\102_8.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_1.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_2.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_3.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_4.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_5.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_6.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_7.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\103_8.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\104_1.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\104_2.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\104_3.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\104_4.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\104_5.tif

?????文件??????90512??2000-08-25?17:30??database_and_code\104_6.tif

............此處省略83個文件信息