Optimize the edge detection

2012 4 27
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Good evening everyone
to highlight the shape of objects in a scene, I called to edge detection. My concern is how to remove small segments of contours which carries no information in relation to objects.
with bwareaopen(BW, P) I improved a little the result, given where I continue to vary P, I eliminate more segments but I destroy the contour of the object.
Can you help me?
thank you

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Spandan Tiwari
Spandan Tiwari 2012-4-27

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imopen might be more selective in removing segments based on their size.

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