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IMAGING GLOSSARY

Convex (geometry)

A 2-dimensional blob, for example, a region of interest (ROI), where every tangent that can be drawn touches the blob at a continuous stretch of the blob's surface with no gaps.

In simpler words, if a rubber band could be snugly wrapped around a convex blob there would be no places where the rubber band lifts off and is not touching the blob.

Convex is the opposite of concave.

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