Hello,
It is my understanding that you would like to remove the child-hole objects from the output of "bwboundaries". For this, you can utilise the below mentioned script which I adapted from the documentation page of this function (link):
[B,L,N,A] = bwboundaries(BW);
figure; imshow(BW); hold on;
% Loop through object boundaries
for k = 1:N
% Boundary k is the parent of a hole if the k-th column
% of the adjacency matrix A contains a non-zero element
if (nnz(A(:,k)) > 0)
% Loop through the children of boundary k and remove them
for l = find(A(:,k))'
B{l} = {};
end
end
end
Boundaries before removal of holes:
After removal of child-holes:
NOTE: Using bwboundaries with 'noholes' option also gives the same result as above. You might try that as well. I hope this helps!
