how to find mid point between two centroids of objects?

hello friends,

I want to find mid points between two centroids of objects.

I have used this code :

for n=1:Ne 
[r,c] = find(L==n);
s  = regionprops(L, 'centroid');
centroids = cat(1, s.Centroid);
imshow(image);
hold on
plot(centroids(:,1), centroids(:,2), 'b*');

I found the result as

This code gives the centroids from the corner points too. which are unnecessary. how to remove them?

I would be thankful if someone helps me to find mid point between two two centroids of objects by finding the distance between them or else.

thanks in advance.

Answer 1

[Walter Roberson]

mean(centroids)

[Rujal]

Dear Walter Roberson,

I tried this code by

mid= mean(centroids); plot(mid(:,1),'r*');

And result is:

I think it is not provide accurate mid point :(

[Walter Roberson]

plot(mid,'r*')

Remember, the first column is the x only.

[Rujal]

thank you walter roberson, but it gives the same result with two points instead of one.

[Walter Roberson]

Sorry should be

plot(mid(1), mid(2), 'r*')

[Rujal]

its working...thank you so much...

[Image Analyst]

I answered this in your duplicate question: http://www.mathworks.com/matlabcentral/answers/266889-how-to-draw-polar-histogram-of-the-object-of-image#comment_341030