iPB4 Biometric Device Range
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Installation & User Guide
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Rev 07 ©2017-2018 iPulse Systems
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The image on the right shows an example of a reconstructed image:
MINUTIAE EXTRACTION
A highly complex mathematical formula, part of what differentiates each manufacturer’s algorithm from
others, is used to classify fusions and endings, their directions and relative locations to each other. When
the algorithm has mapped all these points, it builds the final template: the minutiae string that uniquely
identifies this fingerprint. To the eye, this looks like nothing more than a long string of random numbers.
The image below shows the overall progress
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from the base image we started with to one where the
minutia points and their directions as an overlay on the original. This is what the information looks like
before the final minutiae string is built.
On this image, each red dot represents a minutia point. The list to the right
shows the numeric location of each of these points, which will, eventually,
become the minutiae string data.
Figure 10 - Ridge reconstruction
Figure 11 - Base image
Figure 12 - Base image with
the minutia points and
directions overlay
Summary of Contents for iPB4
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