minutiae_ext 함수 - 지문인식

function [endpoint,bifurpoint] = minutiae_ext(thin)
 
endpoint=[];
bifurpoint=[];
 
width = size(thin,2);
height = size(thin,1);
 
width = width-3;
height = height-3;
 
for h=1:1:height
    for w=50:1:width-50
       if thin(h+1,w+1)==1
           continue;
       end
        
       sum=0;
       for j=h:1:h+2
           for i=w:1:w+2
               sum = sum + thin(j,i);
           end
       end
       
       if sum==7 
           e=[h+1,w+1];
           endpoint=[endpoint;e];
       elseif sum==5
           flag=0;
           if thin(h,w+1)+thin(h+2,w+1)+thin(h+1,w)==0
               flag=1;             
           elseif thin(h,w+1)+thin(h+2,w+1)+thin(h+1,w+2)==0
               flag=1;
           elseif thin(h+1,w)+thin(h+1,w+2)+thin(h+2,w+1)==0
               flag=1;
           elseif thin(h+1,w)+thin(h+1,w+2)+thin(h,w+1)==0
               flag=1;
           elseif thin(h,w)+thin(h+2,w+2)+thin(h+2,w)==0
               flag=1;
           elseif thin(h,w)+thin(h+2,w+2)+thin(h,w+2)==0
               flag=1;
           elseif thin(h+2,w)+thin(h,w+2)+thin(h+2,w+2)==0
               flag=1;
           elseif thin(h+2,w)+thin(h,w+2)+thin(h,w)==0
               flag=1;
           elseif thin(h,w)+thin(h+2,w)+thin(h+1,w+2)==0
               flag=1;
           elseif thin(h+1,w)+thin(h,w+2)+thin(h+2,w+2)==0
               flag=1;
           elseif thin(h,w)+thin(h,w+2)+thin(h+2,w+1)==0
               flag=1;
           elseif thin(h+2,w)+thin(h+2,w+2)+thin(h,w+1)==0
               flag=1;
           elseif thin(h+2,w)+thin(h,w+1)+thin(h+1,w+2)==0
               flag=1;
           elseif thin(h+1,w)+thin(h+2,w+1)+thin(h,w+2)==0
               flag=1;
           elseif thin(h+1,w)+thin(h,w+1)+thin(h+1,w+2)==0
               flag=1;
           elseif thin(h,w)+thin(h+2,w+1)+thin(h+1,w+2)==0
               flag=1;
           end 
           
           if flag==1
               b=[h+1,w+1];
               bifurpoint=[bifurpoint;b];
           end
       end
    end    
end
 
end