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If I’ve got an image which look, for example, like this:
0101001
1101101
0101001
Is there any method I can use which will find both of those disconnected blobs? For example, producing something like this:
0102003
1102203
0102003
Like scipy.ndimage.label.
What you need is blob library. There was cvblobslib, it seems outdated. Try cvBlob — looks great.
Also, there is related function in OpenCV
cvFloodFill, though you’ll have to write code to find and manage connected components.