Merging/connecting blobs that belong to same object

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BlueBee77 2016-6-30

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https://ww2.mathworks.cn/matlabcentral/answers/293063-merging-connecting-blobs-that-belong-to-same-object

评论： BlueBee77 2016-6-30

I am doing background subtraction and trying to extract the foreground object(humans). The problem is that when i am trying to crop the foreground object, due to some gape in the objects they are cropped as several blobs and not one. How can i merge/connect blobs that belong to same object but are disconnected due to some gape in the binary image. I am attaching some image to make my point clear.

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Answer 1

Image Analyst 2016-6-30

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https://ww2.mathworks.cn/matlabcentral/answers/293063-merging-connecting-blobs-that-belong-to-same-object#answer_227210

burn_multiple_lines_into_image.m

You could find the centroids of all blobs and then burn a line between the centroids to connect all the blobs with a line. See attached demo.

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BlueBee77 2016-6-30

Thanks alot for your response. I am going to try that but sometimes there are more than one persons in the image, what logic should be used for connecting the centroids of blobs e.g head, legs, hands or chest that belong to one person.

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