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I am working on an image recognition application that processes groups of connected pixels and classifies these. Sometimes, due to sampling errors some pixels that should be connected are not.

What are good techniques for "reconnecting" the pixels? Are there alternatives to the morphological close operation?

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Difficult to comment without seeing an image. Pl post an example – nav Dec 10 '12 at 12:12
What's the criterion for connected pixels? How do you decide if they're connected or not? BTW, you can always try attribute closing instead of morphological, it's more flexible ;) – penelope Dec 10 '12 at 15:41

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