Hi I have a group of blobs of a binary image for which I have calculated the centroids. I would like to find the distance between each of these centroids and then extract the two centroids which lie in a 40 to 45 range. I've seperated the X and Y cdts into 2 matrices like so: >> X=centroids(:,1); Y=centroids(:,2); >> X X = 121.3073 142.9425 168.1000 225.5856 522.9487 >> Y Y = 207.2626 149.0276 114.7667 297.5586 299.9551 and then I tried computing the euclidean distance using pdist2 but I dont understand what it gives me and I dont see any 40s over here D = pdist2(X,Y,'euclidean'); >> D D = 85.9553 27.7203 6.5406 176.2513 178.6479 64.3200 6.0851 28.1759 154.6160 157.0126 39.1626 19.0724 53.3333 129.4586 131.8551 18.3230 76.5580 110.8189 71.9730 74.3695 315.6861 373.9211 408.1821 225.3902 222.9936 Any advice pls?

finding distance between centroids

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mayfair 2012-4-12

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评论： emami.m 2019-3-11

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I have a group of blobs of a binary image for which I have calculated the centroids.

I would like to find the distance between each of these centroids and then extract the two centroids which lie in a 40 to 45 range. I've seperated the X and Y cdts into 2 matrices like so:

>> X=centroids(:,1); Y=centroids(:,2); >> X

X =

>> Y

Y =

and then I tried computing the euclidean distance using pdist2 but I dont understand what it gives me and I dont see any 40s over here

D = pdist2(X,Y,'euclidean'); >> D

D =

9553   27.7203    6.5406  176.2513  178.6479
3200    6.0851   28.1759  154.6160  157.0126
1626   19.0724   53.3333  129.4586  131.8551
3230   76.5580  110.8189   71.9730   74.3695
6861  373.9211  408.1821  225.3902  222.9936

Any advice pls?