core and delta matlab code

[sayim133]

Hello everyone.
Iam doing a project in fingerprint.
I need a matlab code for detecting the core and the delta.
thanks

 

[prathamesh]

the most elegant method is use of poincare index. it can find both core and delta

 

[saad_Al]

could u plz,, tell me how can i use Poincare index in Matlab,,,

 

[vkoda]

function tres =poin(tt)

vv=[];
vv=[vv,flipdim(tt,1),1)];
vv=[vv; tt(1,2:end)'];
vv=[vv; tt(2:end,size(tt,2))];
vv=[vv; flipdim(tt(size(tt,2),2:end-1)',1)];
res=zeros(size(vv));
for i=1:size(vv,1)-1
res(i)= vv(i+1)-vv(i);
end;
res(size(vv,1))=vv(1)-vv(size(vv,1));

for i=1:size(res,1)
if abs(res(i)) < pi/2
res(i) = res(i);
elseif res(i) < - pi/2
res(i) = pi + res(i);
else
res(i) = pi - res(i);
end;
end;


tres=sum(res);



USB microscope camera

 

[snehal89]

bt what is input of this function ??

function tres =poin(tt)

vv=[];
vv=[vv,flipdim(tt,1),1)];
vv=[vv; tt(1,2:end)'];
vv=[vv; tt(2:end,size(tt,2))];
vv=[vv; flipdim(tt(size(tt,2),2:end-1)',1)];
res=zeros(size(vv));
for i=1:size(vv,1)-1
res(i)= vv(i+1)-vv(i);
end;
res(size(vv,1))=vv(1)-vv(size(vv,1));

for i=1:size(res,1)
if abs(res(i)) < pi/2
res(i) = res(i);
elseif res(i) < - pi/2
res(i) = pi + res(i);
else
res(i) = pi - res(i);
end;
end;


tres=sum(res);



USB microscope camera