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<p><a href="page.php?w=top-hat_transform">top-hat transform</a> and the <a href="page.php?w=Watershed_%28algorithm%29">Watershed</a> (MM's main <a href="page.php?w=Segmentation_%28image_processing%29">segmentation</a> approach).</p>

<p>In the 1980s and 1990s, MM gained a wider recognition, as research centers in several countries began to adopt and investigate the method. MM started to be applied to a large number of imaging problems and applications, especially in the field of non-linear filtering of noisy images.</p>

<p>In 1986, Serra further</p><p>
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