MATLAB: How to find x y coordinates of detected blobs

blobs find x yImage Processing Toolbox

Dear All,

Do you know how to find the center coordinate of a blob. That means after detected blobs i need to assign variables to that blob locations.

Best Answer

You need to ask regionprops for the Centroid or Weighted Centroid. See my Image Segmentation Tutorial for an example: Image Analyst's File Exchange It does exactly that.

Related Solutions

MATLAB: How to store the blobs centroid in array one by one in loop

Instead of those three lines, try this single line

centroids = [STATS.Centroid];

centroids is an N by 2 array where the first column are the x's and the second column are the y's. Or:

xCentroids = centroids(:,1);
yCentroids = centroids(:,2);

MATLAB: How i can put a rectangular around forground

Call bwconvhull() before you call bwlabel() or bwconncomp(). That will join the two blobs and create just one giant blob, which, of course, will have just one bounding box.

binaryImage = bwconvhull(binaryImage);
labeledImage = bwlabel(binaryImage);
measurements = regionprops(labeledImage, 'BoundingBox');
boundingBox = measurements.BoundingBox;

Best Answer

Related Solutions

MATLAB: How to store the blobs centroid in array one by one in loop

MATLAB: How i can put a rectangular around forground

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