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iPB4 Biometric Device Range – Installation & User Guide – Rev 07 ©2017-2018 iPulse Systems
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MINUTIA
Minutia points are the major defining characteristics of a fingerprint. When a fingerprint is analyzed, each
minutia point is marked and mapped in relation to other minutia points as well as its general location in
the fingerprint.
Figure 13 - Common minutia points
Common Minutia Points
•
Ridge ending – a point where the ridge terminates.
•
Short ridge or dot – ridges with a significantly shorter length than the average ridge length on the
fingerprint.
•
Bifurcation – points where a single ridge splits into two ridges.
•
Island or eye – a point where a single ridge splits into two before converging into a single ridge again.
•
Spur or hook – a shorter ridge terminating soon after it branched from its originating ridge.
•
Bridge – a short ridge that connecting two larger ridges. It can also be seen as two bifurcating ridges
that share a common branch.
•
Core – a ridge that bends back on itself or forms a U-turn.