MATLAB: Finding nearest label

labe

Hi I have the following matrix
I =
     0     1     0     0     1     0
     0     0     0     1     0     0
     0     0     0     0     0     0
     0     0     1     1     0     0
     0     1     0     0     1     0
     1     0     0     0     0     1
and
L=bwlabel(I)
L =
     0     2     0     0     3     0
     0     0     0     3     0     0
     0     0     0     0     0     0
     0     0     1     1     0     0
     0     1     0     0     1     0
     1     0     0     0     0     1
and I know a position say (4,1). How to find the nearest label from the position (4,1)

Best Answer

M = zeros(size(L));
M(4,1) = 1;
Md = bwdist(M);
Ll = logical(L);
mmn = min(Md(Ll));
[ii jj] = find((Md == mmn)&Ll);
out = L(ii,jj)
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