How can i find out if two minutiae points in a fingerprint image are on the same ridge line?
3 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Fego Etese
el 21 de Mzo. de 2020
Comentada: Fego Etese
el 24 de Mzo. de 2020
Please i need help on how to know if two minutiae points on a fingerprint image are on the same ridge so as to be able to remove fake minutiae points from the fingerprint.
So I have done the extraction of minutiae points in the fingeprint image but how can i know if two of these minutiae points are on the same ridge line i.e. the same white line.
Thanks.
2 comentarios
darova
el 24 de Mzo. de 2020
What about bwlabel? You can separate each 'white' line and loop through all individually
Check if one has 2 points
Respuesta aceptada
darova
el 24 de Mzo. de 2020
Simple example
I0 = imread('image.jpg');
I1 = ~im2bw(I0);
I2 = bwmorph(I1,'thin',inf);
I3 = bwareaopen(I2,30); % remove lines bigger 30 pixels
[L,n] = bwlabel(I3); % label each region
for i = 1:n
Ic = L==i; % find region
Ib = bwmorph(Ic,'branchpoints'); % branch/minutae points
[y,x] = find(Ib); % find coordinates minutae points
II = cat(3,Ic,I3,I3*0);
imshow(II,'initialmagnification','fit')
hold on
plot(x,y,'or')
hold off
pause(1)
end
I used attached image. So how do you want to remove points? And which one?
14 comentarios
Image Analyst
el 24 de Mzo. de 2020
Yes, if L(row1, col1) is the same as L(row2, col2) then they are on the same ridgeline, otherwise they are on different ridgelines.
Más respuestas (0)
Ver también
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!