Morphological Post-Processing

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After binarization, morphological operations clean up the mask:

• Opening: removes small foreground fragments (noise).

• Closing: fills small holes in particles.

• Fill holes: fills enclosed background regions.

• Remove small objects: discards connected components below a minimum area threshold.

See also

• Morphological Operations — the underlying operations, in depth

• Connected Components — labelling what’s left after clean-up

• Binarization and Thresholding — producing the mask this step cleans up

• Image Preprocessing — every other preprocessing operation