Closing (morphology)
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In image processing, the closing of a 2-dimensional set (image) A by another set B is the erosion of the dilation of that set,
- <math>C(A, B) = (A+B)-B<math>
(here, the plus sign is the dilation and the minus sign is the erosion). One has
- <math>A \subset C(A,B)<math>.
Closing is, together with opening, the basic workhorse of morphological noise removal. Opening removes small objects, while closing removes small holes.
External links
- Introduction to mathematical morphology (http://homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/OWENS/LECT3/node3.html)