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.

Examples

SelectComponents[img, #Area > 100 &]

Please visit the official Wolfram Language Reference for more details.