Helps Separate Objects That Touch

• If two things in a photo are stuck together (like touching coins), watershed can separate them clearly.

Finds Clear Boundaries

• It draws neat lines around each object, which helps when you want to count or label them.

Better Results with Markers

• You can tell the computer what’s background and what’s object — this helps avoid mistakes and over-segmentation (splitting too much).

Works Great on Edge Images

• If you use an edge-detection filter first, watershed becomes even more accurate.

Very Useful in Medical and Scientific Images

• Doctors use it to find and study things like cells, tumors, or organs in scan images.

Easy to Use with Tools Like OpenCV

• It’s available in popular image processing libraries, so you don’t have to build it from scratch.