SelectComponents

SelectComponents[{image,lmat},crit] selects components of image indicated by the label matrix lmat that satisfy crit, replacing other parts with black.

SelectComponents[image,crit] selects connected components of image.

SelectComponents[…,"prop",n] computes the property "prop" and selects the first n in sorted order.

SelectComponents[…,"prop",n,p] sorts computed properties using the ordering function p.

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