I have 8 balloons which scatter on a binary image with no specific pattern, I want to get the distance every pairwise of balloons, could you give me any suggestion or codes?how can I do that?

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Zohreh Tavakkoli 2014-5-27

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评论： Zohreh Tavakkoli 2014-5-27

I have 8 balloons which scatter on a binary image with no specific pattern, I want to get the distance between every pairwise of balloons, could you give me any suggestion or codes?how cando i that?

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Answer 1

Image Analyst 2014-5-27

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编辑：Image Analyst 2014-5-27

See my image segmentation tutorial to get the centroids. http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862 Then use the Pythagorean theorem to find distances between each pair of centroids. Post your image if you want better advice.

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Image Analyst 2014-5-27

在 MATLAB Online 中打开

BlobsDemo.m

Let me attach the BlobsDemo tutorial I referred you to. To find the centroid of any given blob, you can do

blobCentroid = blobMeasurements(k).Centroid;

So you just do a double loop:

for j = 1 : numberOfBlobs           % Loop through all blobs.
  for k = 1 : numberOfBlobs           % Loop through all blobs.
    blobCentroidj = blobMeasurements(j).Centroid;
    blobCentroidk = blobMeasurements(k).Centroid;
    horizontalDistances(j, k) = blobCentroidj(1) - blobCentroidk(1);
    verticalDistances(j, k) = blobCentroidj(2) - blobCentroidk(2);
  end
end