How to find bifurcation and termination points in fingerprint?

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Nupur Goyal
Nupur Goyal 2019-7-3
回答： Image Analyst 2019-7-4
I want to find total no. of termination and bifurcation points on an fingerprint image which is filtered properly.
  2 个评论
KALYAN ACHARJYA
KALYAN ACHARJYA 2019-7-3
Please provide the details maths to find total no. of termination and bifurcation points.
so that we can help you to implement in Matlab.
Nupur Goyal
Nupur Goyal 2019-7-4
[rows colm]=size(Thin_image);
% Avoid the boundary pixels
bifurcation=0
ridge=0
for i=2:rows-1;
for j=2:colm-1
sub_matrix=(Thin_image(i-1:i+1,j-1:j+1));
if sub_matrix(2,2)==0
sub_matrix=0;
else
sub_matrix=sum(sub_matrix(:))-1;
if sub_matrix==1
P=fprintf('it is a ridge termination');
i
j
ridge=ridge+1
else if sub_matrix==3
i
j
Q=fprintf('it is a bifurcation');
bifurcation=bifurcation+1
end
end
end
end
end
I have this code but in this it only shows limited no. of bifurcation point and 0 ridges.pls help

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采纳的回答

Image Analyst
Image Analyst 2019-7-4
Skeletonize your binary image with bwmorph('skel') then use bwmorph('endpoints') and bwmorph('branchpoints') to find the end points and branch points (bifurcations).

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