In mathematical morphology, opening is the dilation of the erosion of a set A by a structuring element B: A ∘ B = ( A ⊖ B ) ⊕ B , {\displaystyle A\circ B=(A\ominus B)\oplus B,\,} where ⊖ {\displaystyle \ominus } and ⊕ {\displaystyle \oplus } denote erosion and dilation, respectively. Together with closing, the opening serves in computer vision and image processing as a basic workhorse of morphological noise removal.
In mathematical morphology, opening is the dilation of the erosion of a set A by a structuring element B: A ∘ B = ( A ⊖ B ) ⊕ B , {\displaystyle A\circ B=(A\ominus B)\oplus B,\,} where ⊖ {\displaystyle \ominus } and ⊕ {\displaystyle \oplus } denote erosion and dilation, respectively. Together with closing, the opening serves in computer vision and image processing as a basic workhorse of morphological noise removal.
Source: Wikipedia "Opening (morphology)" · CC BY-SA 4.0
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