Digital signal and image processing
DM thread
Erosion vs dilation, explained by text
My binary image has tiny holes and specks. Which operation fixes what?
Quick check · tap an answer to continue
Lesson notes
Takeaway: Opening removes specks; closing fills small holes.
Quick check: In erosion, when does a foreground pixel stay foreground?
- Element touches any object
- Element fits fully inside
- Pixel value is above mean
Erosion keeps a pixel only if the whole structuring element fits in the object.
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